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PEOPLE@HES-SO – Annuaire et Répertoire des compétences
PEOPLE@HES-SO – Annuaire et Répertoire des compétences

PEOPLE@HES-SO
Annuaire et Répertoire des compétences

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Mugellini Elena

Mugellini Elena

Professeure HES ordinaire/Responsable d'institut

Compétences principales

Interdisciplinary Innovation

Human Computer Interaction

Technology for Behavior Change

User Research

Human Analytics

Machine Learning

  • Contact

  • Enseignement

  • Recherche

  • Publications

  • Conférences

Contrat principal

Professeure HES ordinaire/Responsable d'institut

Téléphone: +41 26 429 68 70

Bureau: HEIA_D20.17

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH
HEIA-FR
Institut
HumanTech - Technology for Human Wellbeing Institute
MSc HES-SO en Engineering - HES-SO Master
  • Advanced Human Computer Interaction
  • Machine Learning
  • IT Project Management
  • Design Thinking
BSc HES-SO en Informatique - Haute école d'ingénierie et d'architecture de Fribourg
  • Génie logiciel
  • Machine Learning
  • Interfaces Hommes-Machine avancées

En cours

For a complete list of RaD projects please visit http://humantech.institute/

Rôle: Requérant(e) principal(e)

Description du projet :

For a complete list of RaD projects please visit http://humantech.institute/

Equipe de recherche au sein de la HES-SO: Mugellini Elena

Durée du projet: 28.09.2020

Statut: En cours

AdVitam - Adaptive Driver-Vehicle InTerAction to Make future driving safer

Rôle: Requérant(e) principal(e)

Financement: Hasler Stiftung

Description du projet :

AdVitam stands for Adaptive Driver-Vehicle InTerAction to Make future driving safer. It is a 3 years (2018-2021) research project co-funded by Hasler Fundation.

AdVitam explores how human-vehicle interface (HVI) can be designed at different level of attention in shared control driving to keep the driver at the optimum cognitive load and to fully support the potential of semi-automated driving.

The project aims at contributing to the vision of a car as a companion where the driver and the car work collaboratively and interactively as team-members to control the vehicle.

This project involves three PhD students. The first one works on multi-sensory experiences considering the entire car interior in order to support driver supervision tasks and increase situational awareness. The second one investigates how to use different modalities and combine them to improve the intervention of the driver during take-over requests. The third one studies how we can use several psychophysiological signals in order to assess the driver state in real-time.

The work of the three students will outcome in a novel collaborative interaction model between the driver and the vehicle in shared-control driving.

Equipe de recherche au sein de la HES-SO: Mugellini Elena , Abou Khaled Omar , Capallera Marine , Meteier Quentin , De Salis Emmanuel , Carrino Stefano , Angelini Leonardo

Partenaires académiques: Andreas Sonderegger, EPFL+ECAL Lab; Jean-Pierre Bresciani, UniFR

Url du site du projet: http://advitam.humantech.institute/

Statut: En cours

2024

Classification of driver fatigue in conditionally automated driving using physiological signals and machine learning
Article scientifique ArODES

Quentin Meteier, Renée Favre, Sofia Viola, Marine Capallera, Leonardo Angelini, Elena Mugellini, Andreas Sonderegger

Transportation Research Interdisciplinary Perspectives,  2024, 26, 101148

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Résumé:

Conditionally automated vehicles (Level 3 SAE) are emerging on the roads, but long periods without engaging in a non-driving-related task can reduce drivers’ vigilance. This study aims to determine whether driver fatigue can be accurately predicted using physiological signals and machine learning (ML) techniques in such a context. 63 young drivers completed two separate conditional automated drives of 30 min each, in either a rural or a urban area. Half of them had been mildly sleep-deprived the previous night (slept less than six hours). Electrocardiogram (ECG), electrodermal activity (EDA), and respiration were collected, along with subjective measures of sleepiness and affective state. Using ML, sleep deprivation, driving environment, and sleepiness could be predicted from physiological features with an accuracy of 99%, 85%, and 73% respectively. Signal segmentation increased model accuracy, and EDA features were the most predictive. The differences between the results obtained from statistical analyses of sleepiness measures and the accuracy achieved by ML models are discussed. The results of this empirical study indicate that even mild sleep deprivation affects the physiological state of drivers, which can have serious consequences when combined with long periods of inactivity. Car manufacturers and researchers should take this into account when designing intelligent systems capable of providing drivers with appropriate warnings before a critical situation arises.

The smart home, a true home? How new technologies disrupt the experience of home for older persons
Article scientifique ArODES

Nadine Andrea Felber, Hamed Alavi, Elena Mugellini, Tenzin Wangmo

Universal Access in the Information Society,  2024

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Résumé:

Smart home technologies (SHTs) can support older persons to age in place. However, adoption of SHTs remains low among this population. A reason for this is that they are not accustomed to having a home that is technologically enhanced. In this article, we focus on the older persons’ lived experience of “home” and show how SHTs potentially disrupt it. In consulting the currently available literature, both theoretical and empirical, we propose and use the concept of somatic capability assessment (SCA) in the discussion surrounding the design of SHTs for older persons. First, we propose SCA as a concept to grasp how humans take decisions while relying on their physical body, undisturbed by suggestions from technologies. Furthermore, we show that SCA functions best in a familiar and private environment—the home. SHTs have the potential to make the home seem unfamiliar and exposed, precisely through added data and the resulting suggestions, as we show through related empirical studies. Thus, SHTs hold an increased disruptive potential for older persons at home. By introducing SCA into the discussion of SHTs for older persons, and thus paying attention on how SHTs potentially disrupt the experience of home, further advances the ethical discussion on the adequate use and design of technologies in daily life, especially for the group of older persons. Our analysis offers important insights for the design and implementation processes of SHTs for older persons.

Exploring the benefits of physical features in virtual reality on customer experience
Article scientifique

Cherix Robin, Julmy Maud, Capallera Marine, Roland Julien, Mugellini Elena

Proceedings of the IHCI 2024+ GET 2024+ CGVCVIP 2024, 13-15 July 2024, Budapest, Hungary, 2024 , pp.  162-165

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Résumé:

Virtual try-out experiences suffer from a lack of physicality. If consumers cannot touch or feel what they see, it is less
likely for them to buy it. Here we present work in progress of an immersive luxury watch try-out experience. We added a
3D printed, weighted mock-up to enrich the experience. This mock-up is worn on the wrist, where the virtual watch appears.
User tests show that the proposed experience is very well received and sparks interest for such experience.

2023

Older adults' perspectives on multimodal interaction with a conversational virtual coach
Article scientifique ArODES

Mira El Kamali, Denis Lalanne, Omar Abou Khaled, Elena Mugellini, Leonardo Angelini

Frontiers in Computer Science,  5, 112895

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Résumé:

The use of multiple interfaces may improve the perception of a stronger relationship between a conversational virtual coach and older adults. The purpose of this paper is to show the effect of output combinations [single-interface (chatbot, tangible coach), multi-interface (assignment, redundant-complementary)] of two distinct conversational agent interfaces (chatbot and tangible coach) on the eCoach-user relationship (closeness, commitment, complementarity) and the older adults' feeling of social presence of the eCoach. Our study was conducted with two different study settings: an online web survey and a face to face experiment. Our online study with 59 seniors shows that the output modes in multi-interface redundant-complementary manner significantly improves the eCoach-user relationship and social presence of the eCoach compared to only using single-interfaces outputs. Whereas in our face to face experiment with 15 seniors, significant results were found only in terms of higher social presence of multi-interface redundant complementary manner compared to chatbot only. We also investigated the effect of each study design on our results, using both quantitative and qualitative methods.

A dataset on the physiological state and behavior of drivers in conditionally automated driving
Article scientifique ArODES

Quentin Meteier, Marine Capallera, Emmanuel de Salis, Leonardo Angelini, Stefano Carrino, Marino Widmer, Omar Abou Khaled, Elena Mugellini, Andreas Sonderegger

Data in Brief,  2023, 47, 109027

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Résumé:

This dataset contains data of 346 drivers collected during six experiments conducted in a fixed-base driving simulator. Five studies simulated conditionally automated driving (L3-SAE), and the other one simulated manual driving (L0-SAE). The dataset includes physiological data (electrocardiogram (ECG), electrodermal activity (EDA), and respiration (RESP)), driving and behavioral data (reaction time, steering wheel angle, …), performance data of non-driving-related tasks, and questionnaire responses. Among them, measures from standardized questionnaires were collected, either to control the experimental manipulation of the driver's state, or to measure constructs related to human factors and driving safety (drowsiness, mental workload, affective state, situation awareness, situational trust, user experience). In the provided dataset, some raw data have been processed, notably physiological data from which physiological indicators (or features) have been calculated. The latter can be used as input for machine learning models to predict various states (sleep deprivation, high mental workload, ...) that may be critical for driver safety. Subjective self-reported measures can also be used as ground truth to apply regression techniques. Besides that, statistical analyses can be performed using the dataset, in particular to analyze the situational awareness or the takeover quality of drivers, in different states and different driving scenarios. Overall, this dataset contributes to better understanding and consideration of the driver's state and behavior in conditionally automated driving. In addition, this dataset stimulates and inspires research in the fields of physiological/affective computing and human factors in transportation, and allows companies from the automotive industry to better design adapted human-vehicle interfaces for safe use of automated vehicles on the roads.

ID Tech :
Article scientifique ArODES
a virtual reality simulator training for teenagers with intellectual disabilities

Marine Capallera, Geneviève Piérart, Francesco Carrino, Robin Cherix, Amélie Rossier, Elena Mugellini, Abou Khaled Omar

Applied Sciences,  2023, vol. 13, no. 3679, pp. 1-15

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Résumé:

People with intellectual disability (ID) should routinely train themselves to carry out a variety of daily challenging tasks while being supervised by one or more supervisors. Virtual reality (VR) technology enables the simulation of certain learning scenarios that would be risky or difficult to set up or repeatedly replicate in the actual world. This paper introduces a VR simulator created for this aim with the assistance of social educators. The purpose is to use VR to conduct learning exercises with teenagers with ID and assess the extent to which the abilities learned in VR can be transferred to the real world. This project focuses mainly on urban mobility with three types of exercise. A study was conducted with 18 students in five institutions for 7 months. Post-tests were also carried out after 1 month with 11 teenagers. In the end, four teenagers are completely autonomous in their travels: two travel on foot and two travel by public transport. Regarding the impact analysis, the results are stable over time regarding self-reported ease, satisfaction, and fatigability. Finally, the system received valuable feedback from the educators.

Co-designing an embodied e-coach with older adults :
Article scientifique ArODES
the tangible coach journey

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Nick Dulake, Paul Chamberlain, Claire Craig, Carlo Emilio Standoli, Giuseppe Andreoni, Omar Abou Khaled, Elena Mugellini

International Journal of Human–Computer Interaction,  40, 10, 2736-2759

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Résumé:

This article describes a tangible interface for an e-coach, co-designed in four countries to meet older adults’ needs and expectations. The aim of this device is to coach the user by giving recommendations, personalized tasks and to build empathy through vocal, visual, and physical interaction. Through our co-design process, we collected insights that helped identifying requirements for the physical design, the interaction design and the privacy and data control. In the first phase, we collected users’ needs and expectations through several workshops. Requirements were then trans- formed into three design concepts that were rated and commented by our target users. The final design was implemented and tested in three countries. We discussed the results and the open challenges for the design of physical e-coaches for older adults. To encourage further developments in this field, we released the research outputs of this design process in an open-source repository.

A contextual multimodal system for increasing situation awareness and takeover quality in conditionally automated driving
Article scientifique ArODES

Marine Capallera, Quentin Meteier, Marino Widmer, Leonardo Angelini, Stefano Carrino, Andreas Sonderegger, Omar Abou Khaled, Elena Mugellini

IEEE Access,  2023, vol. 11, pp. 5746-5771

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Résumé:

Advanced driver assistances are becoming increasingly common in commercial cars, not only to assist but also to free drivers from manual driving whenever possible. Soon, drivers should be allowed to engage in non-driving-related tasks. The fact that responsibility for driving is shifting from humans to machines must be considered in the development of these assistances in order to guarantee safety and trust. In this article, we introduce AdVitam (for Advanced Driver-Vehicle Interaction to Make future driving safer), an autonomous system aiming at maintaining driver’s situation awareness and optimizing takeover quality during conditionally automated driving. The information conveyed to drivers is dynamically adapted to achieve these goals, depending on the driving environment and the driver’s physiological state. This system consists of three connected modules. The first module (Driver State) predicts the driver’s state with machine learning and physiological signals as inputs. The second module (Supervision) uses different interfaces (a haptic seat, a personal device, and ambient lights) to maintain the drivers’ situation awareness during the autonomous driving phases. The third module (Intervention) is a machine learning model that chooses the most appropriate combination among haptic, auditory, and visual modalities to request the driver to take over control and thus optimize takeover quality. To evaluate the system and each module independently, a preliminary user study with 35 drivers was conducted in a fixed-base driving simulator. All participants drove in two different environments (rural and urban). In addition, the activation of the Supervision and Intervention modules were manipulated as two between-subject factors. Results show that conveying information on the driving environment status through multimodal interfaces increases drivers’ situation awareness (i.e., better identification of potential problems in the environment) and trust in the automated vehicle. However, the system does not show positive outcomes on takeover quality. Besides, the Driver State module provided consistent predictions with the experimental manipulation. The system proposed in this paper could lead to better acceptance and safety when conditionally automated vehicles will be released by increasing drivers’ trust during phases of automated driving.

2022

Human-Vehicle Interaction to Support Driver's Situation Awareness in Automated Vehicles: A Systematic Review
Article scientifique ArODES

Marine Capallera, Leonardo Angelini, Quentin Meteier, Omar Abou Khaled, Elena Mugellini

IEEE Transactions on Intelligent Vehicles,  2023, Vol. 8, n° 3, pp. 2551 - 2567

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Résumé:

Autonomous driving will change the role of the driver. From being the main actor in driving, the driver will now have a supervisory role during the autonomous driving phases. However, if the driver has to take over control of the vehicle, he must be aware of the situation around him. This is why it is important to develop interfaces to keep him in the loop. This article proposes a systematic review of Human Vehicle Interaction (HVI) providing situation awareness in the context of autonomous driving. 37 articles presenting such interactions are analyzed in terms of design of the interaction (modalities, location, conveyed information) but also in term of evaluation and experimental conditions. We present an overview of previous studies in order to highlight the work already done or in progress. Current studies present mainly monomodal interfaces although the evaluation of multimodal interactions present promising results in this field.

Carrying a passenger and relaxation before driving :
Article scientifique ArODES
classification of young drivers’ physiological activation

Quentin Meteier, Marine Capallera, Emmanuel de Salis, Marino Widmer, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Andreas Sonderegger

Physiological Reports,  2022, vol. 10, article no. e15229

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Résumé:

Drivers are often held responsible for road crashes. Previous research has shown that stressors such as carrying passengers in the vehicle can be a source of accidents for young drivers. To mitigate this problem, this study investigated whether the presence of a passenger behind the wheel can be predicted using machine learning, based on physiological signals. It also addresses the question whether relaxation before driving can positively influence the driver's state and help controlling the potential negative consequences of stressors. Sixty young participants completed a 10-min driving simulator session, either alone or with a passenger. Before their driving session, participants spent 10 min relaxing or listening to an audiobook. Physiological signals were recorded throughout the experiment. Results show that drivers experience a higher increase in skin conductance when driving with a passenger, which can be predicted with 90%-accuracy by a k-nearest neighbors classifier. This might be a possible explanation for increased risk taking in this age group. Besides, the practice of relaxation can be predicted with 80% accuracy using a neural network. According to the statistical analysis, the potential beneficial effect of relaxation did not carry out on the driver's physiological state while driving, although machine learning techniques revealed that participants who exercised relaxation before driving could be recognized with 70% accuracy. Analysis of physiological characteristics after classification revealed several relevant physiological indicators associated with the presence of a passenger and relaxation.

Empathic and empathetic systematic review to standardize the development of reliable and sustainable empathic systems
Article scientifique ArODES

Karl Daher, Dahlia Saad, Elena Mugellini, Denis Lalanne, Omar Abou Khaled

Sensors,  2022, vol. 22, no. 8, article no. 3046

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Résumé:

Empathy plays a crucial role in human life, and the evolution of technology is affecting the way humans interact with machines. The area of affective computing is attracting considerable interest within the human–computer interaction community. However, the area of empathic interactions has not been explored in depth. This systematic review explores the latest advances in empathic interactions and behaviour. We provide key insights into the exploration, design, implementation, and evaluation of empathic interactions. Data were collected from the CHI conference between 2011 and 2021 to provide an overview of all studies covering empathic and empathetic interactions. Two authors screened and extracted data from a total of 59 articles relevant to this review. The features extracted cover interaction modalities, context understanding, usage fields, goals, and evaluation. The results reported here can be used as a foundation for the future research and development of empathic systems and interfaces and as a starting point for the gaps found.

The NESTORE e-Coach : designing a multi-domain pathway to well-being in older age
Article scientifique ArODES

Leonardo Angelini, Mira El Kamali, Elena Mugellini, Omar Abou Khaled, Christina Röcke, Simone Porcelli, Alfonso Mastropietro, Giovanni Rizzo, Noemi Boqué, Josep Maria Del Bas, Filippo Palumbo, Michele Girolami, Antonino Crivello, Canan Ziylan, Paula Subías-Beltrán, Silvia Orte, Carlo Emilio Standoli, Laura Fernandez Maldonado, Maurizio Caon, Martin Sykora, Suzanne Elayan, Sabrina Guye, Giuseppe Andreoni

Technologies,  2022, vol. 10, no 2, pp. 50-77

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Résumé:

This article describes the coaching strategies of the NESTORE e-coach, a virtual coach for promoting healthier lifestyles in older age. The novelty of the NESTORE project is the definition of a multi-domain personalized pathway where the e-coach accompanies the user throughout different structured and non-structured coaching activities and recommendations. The article also presents the design process of the coaching strategies, carried out including older adults from four European countries and experts from the different health domains, and the results of the tests carried out with 60 older adults in Italy, Spain and The Netherlands.

PEGASO e-Diary: :
Article scientifique ArODES
user engagement and dietary behavior change of a mobile food record for adolescents

Maurizio Caon, Federica Prinelli, Leonardo Angelini, Stefano Carrino, Elena Mugellini, Silvia Orte, José C. E. Serrano, Sarah Atkinson, Anne Martin, Fulvio Adorni

Frontiers in Nutrition,  2022, vol. 9, article 727480

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Résumé:

Background: Obesity amongst children and adolescents is becoming a major health problem globally and mobile food records can play a crucial role in promoting healthy dietary habits. Objective: To describe the methodology for the implementation of the e-Diary mobile food record, to assess its capability in promoting healthy eating habits, to evaluate the factors associated with its usage and engagement. Methods: This is a descriptive study that compared the characteristics of participants engaged in the e-Diary, which was part of the PEGASO project in which an app to provide proactive health promotion was given to 365 students at 4 European sites enrolled during October to December 2016: England (UK), Scotland (UK), Lombardy (Italy), and Catalonia (Spain). The e-Diary tracked the users' dietary habits in terms of food groups, dietary indexes, and 6 dietary target behaviors relating to consumption of: fruit; vegetable; breakfast; sugar-sweetened beverages; fast-food; and snacks. The e-Diary provided also personalized suggestions for the next meal and gamification. Results: The e-Diary was used for 6 months by 357 adolescents (53.8% females). The study showed that females used the e-Diary much more than males (aOR 3.8, 95% CI 1.6–8.8). Participants aged 14 years were more engaged in the e-Diary than older age groups (aOR 5.1, 95% CI 1.4–18.8) as were those with a very good/excellent self-perceived health status compared to their peers with fair/poor health perception (aOR 4.2, 95% CI 1.3–13.3). Compared to the intervention sites, those living in Catalonia (aOR 13.2 95% CI 2.5–68.8) were more engaged. In terms of behavior change, a significant positive correlation between fruit (p < 0.0001) and vegetables (p = 0.0087) intake was observed in association with increased engagement in the e-Diary. Similarly, adolescents who used the app for more than 2 weeks had significantly higher odds of not skipping breakfast over the study period (aOR 2.5, 95% CI 1.0–6.3). Conclusions: The users highly engaged with the e-Diary were associated with improved dietary behaviors: increased consumption of fruit and vegetables and reduced skipping of breakfast. Although the overall usage of the e-Diary was high during the first weeks, it declined thereafter. Future applications should foster user engagement, particularly targeting adolescents at high risk.

Non-intrusive contact respiratory sensor for vehicles
Article scientifique ArODES

Quentin Meteier, Michiel Kindt, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Sensors,  2022, vol. 22, no. 3, article no. 880

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Résumé:

In this work, we propose a low-cost solution capable of collecting the driver’s respiratory signal in a robust and non-intrusive way by contact with the chest and abdomen. It consists of a microcontroller and two piezoelectric sensors with their respective 3D printed plastic housings attached to the seat belt. An iterative process was conducted to find the optimal shape of the sensor housing. The location of the sensors can be easily adapted by sliding them along the seat belt. A few participants took part in three test sessions in a driving simulator. They had to perform various activities: resting, deep breathing, manual driving, and a non-driving-related task during automated driving. The subjects’ breathing rates were calculated from raw data collected with a reference chest belt, each sensor alone, and the fusion of the two. Results indicate that respiratory rate could be assessed from a single sensor located on the chest with an average absolute error of 0.92 min−1 across all periods, dropping to 0.13 min−1 during deep breathing. Sensor fusion did not improve system performance. A 4-pole filter with a cutoff frequency of 1 Hz emerged as the best option to minimize the error during the different periods. The results suggest that such a system could be used to assess the driver’s breathing rate while performing various activities in a vehicle.

Relevant physiological indicators for assessing workload in conditionally automated driving, through three-class classification and regression
Article scientifique ArODES

Quentin Meteier, Emmanuel de Salis, Marine Capallera, Marino Widmer, Leonardo Angelini, Omar Abou Khaled, Andreas Sonderegger, Elena Mugellini

Frontiers in Computer Science,  2022, vol. 3, article no. 775282

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Résumé:

In future conditionally automated driving, drivers may be asked to take over control of the car while it is driving autonomously. Performing a non-driving-related task could degrade their takeover performance, which could be detected by continuous assessment of drivers' mental load. In this regard, three physiological signals from 80 subjects were collected during 1 h of conditionally automated driving in a simulator. Participants were asked to perform a non-driving cognitive task (N-back) for 90 s, 15 times during driving. The modality and difficulty of the task were experimentally manipulated. The experiment yielded a dataset of drivers' physiological indicators during the task sequences, which was used to predict drivers' workload. This was done by classifying task difficulty (three classes) and regressing participants' reported level of subjective workload after each task (on a 0–20 scale). Classification of task modality was also studied. For each task, the effect of sensor fusion and task performance were studied. The implemented pipeline consisted of a repeated cross validation approach with grid search applied to three machine learning algorithms. The results showed that three different levels of mental load could be classified with a f1-score of 0.713 using the skin conductance and respiration signals as inputs of a random forest classifier. The best regression model predicted the subjective level of workload with a mean absolute error of 3.195 using the three signals. The accuracy of the model increased with participants' task performance. However, classification of task modality (visual or auditory) was not successful. Some physiological indicators such as estimates of respiratory sinus arrhythmia, respiratory amplitude, and temporal indices of heart rate variability were found to be relevant measures of mental workload. Their use should be preferred for ongoing assessment of driver workload in automated driving.

2021

Conversational agents for health and well-being across the life course :
Article scientifique ArODES
protocol for an evidence map

Mara Pereira Guerreiro, Leonardo Angelini, Helga Rafael Henriques, Mira El Kamali, Cristina Baixinho, João Balsa, Isa Félix Brito, Omar Abou Khaled, Maria Beatriz Carmo, Ana Paula Claudio, Maurizio Caon, Karl Daher, Bruno Alexandre, Mafalda Padinha, Elena Mugellini

JMIR Research Protocols,  2021, vol. 10, no. 9, article no. e26680

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Résumé:

Background: Conversational agents, which we defined as computer programs that are designed to simulate two-way human conversation by using language and are potentially supplemented with nonlanguage modalities, offer promising avenues for health interventions for different populations across the life course. There is a lack of open-access and user-friendly resources for identifying research trends and gaps and pinpointing expertise across international centers. Objective: Our aim is to provide an overview of all relevant evidence on conversational agents for health and well-being across the life course. Specifically, our objectives are to identify, categorize, and synthesize—through visual formats and a searchable database—primary studies and reviews in this research field. Methods: An evidence map was selected as the type of literature review to be conducted, as it optimally corresponded to our aim. We systematically searched 8 databases (MEDLINE; CINAHL; Web of Science; Scopus; the Cochrane, ACM, IEEE, and Joanna Briggs Institute databases; and Google Scholar). We will perform backward citation searching on all included studies. The first stage of a double-stage screening procedure, which was based on abstracts and titles only, was conducted by using predetermined eligibility criteria for primary studies and reviews. An operational screening procedure was developed for streamlined and consistent screening across the team. Double data extraction will be performed with previously piloted data collection forms. We will appraise systematic reviews by using A Measurement Tool to Assess Systematic Reviews (AMSTAR) 2. Primary studies and reviews will be assessed separately in the analysis. Data will be synthesized through descriptive statistics, bivariate statistics, and subgroup analysis (if appropriate) and through high-level maps such as scatter and bubble charts. The development of the searchable database will be informed by the research questions and data extraction forms. Results: As of April 2021, the literature search in the eight databases was concluded, yielding a total of 16,351 records. The first stage of screening, which was based on abstracts and titles only, resulted in the selection of 1282 records of primary studies and 151 records of reviews. These will be subjected to second-stage screening. A glossary with operational definitions for supporting the study selection and data extraction stages was drafted. The anticipated completion date is October 2021. Conclusions: Our wider definition of a conversational agent and the broad scope of our evidence map will explicate trends and gaps in this field of research. Additionally, our evidence map and searchable database of studies will help researchers to avoid fragmented research efforts and wasteful redundancies. Finally, as part of the Harnessing the Power of Conversational e-Coaches for Health and Well-being Through Swiss-Portuguese Collaboration project, our work will also inform the development of an international taxonomy on conversational agents for health and well-being, thereby contributing to terminology standardization and categorization.

Nutritional monitoring in older people prevention services
Chapitre de livre ArODES

Bhalaji Nagarajan, Rupali Khatun, Marc Bolaños, Eduardo Aguilar, Leonardo Angelini, Mira El Kamali, Elena Mugellini, Omar Abou Khaled, Noemi Boqué, Lucia Taro, Petia Radeva

Dans Andreoni, Giuseppe, Mambretti, Cinzia, Digital Health Technology for Better Aging : a multidisciplinary approach  (pp. 77-102). 2021,  Cham : Springer

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Résumé:

Nutritional monitoring is an important aspect of providing a healthy lifestyle and smarter food consumption. Food recognition is a key task in nutrition monitoring applications especially of interest for older people suffering from malnutrition and unhealthy eating. In order to ease the problem of food intake monitoring, recent health apps involve Artificial Intelligence algorithms for food image analysis. Food recognition is a highly challenging task as the dishes could be composed of mixed types, it could have a lower inter-class variance and also the number of dishes to be recognized is quite higher. In this chapter, we present an in-depth analysis and insights into the development of a nutritional monitoring system that would act as a Key Performance Indicator for the older people food intake monitoring. This system is aimed at providing a convenient food logging environment that would assist older people and their relatives as well as geriatrists in monitoring and maintaining the healthy daily dietary nutritional needs.

Understanding older adults’ affect states in daily life for promoting self-reflection about mental wellbeing
Chapitre de livre ArODES

Martin Sykora, Suzanne Elayan, Leonardo Angelini, Christina Röcke, Mira El Kamali, Elena Mugellini, Sabrina Guye

Dans Andreoni, Giuseppe, Mambretti, Cinzia, Digital Health Technology for Better Aging : a multidisciplinary approach  (pp. 179-193). 2021,  Cham : Springer

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Résumé:

In recent years, due to the rise in availability of unstructured big data and technological affordances, there has been a proverbial “explosion” of research within the field of sentiment analysis and affective computing, facilitating the study of in-situ communicated emotion and its accurate detection at an unprecedented scale. Increasingly the emotional dimension and its key important role is being recognized in e-coaching, with attempts at its integration within such systems. This chapter reviews the predominant extant models for representing affect, as well as emotion related states relevant to older persons’ experiences, including the state-of-art for their automated detection and integration within e-coaching systems. Given the approaches available, we describe how the NESTORE system addresses emotion recognition, self-tracking and subsequent feedback intended to help older adults make sense of their affective experiences across their daily life, as well as the role it can play in holistic e-coaching systems. Finally, from the NESTORE experience, we draw recommendations about how future e-coaching system could be implemented in the future to include the emotional dimension.

Coaching older adults towards a healthier lifestyle: psychological and technological methods
Chapitre de livre ArODES

Christina Röcke, Leonardo Angelini, Sabrina Guye, Mira El Kamali, Maurizio Caon, Omar Abou Khaled, Elena Mugellini

Dans Andreoni, Giuseppe, Mambretti, Cinzia, Digital health technology for better aging: a multidisciplinary approach  (Pp. 161-177). 2021,  Cham : Springer

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Résumé:

This chapter discusses the theoretical behaviour change framework and its integration and implementation of behaviour change techniques that form the conceptual psychological basis for innovative but efficient coaching approach. We review the current state of e-coaching solutions for older adults that can be found in the literature and identify gaps. Finally, we review and discuss the technological implementation of behaviour change techniques applied in NESTORE to support healthy older adults to adopt a healthy lifestyle in all NESTORE well-being domains as reference case study.

Building trust and companionship in e-coaching through embodiment
Chapitre de livre ArODES

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Guiseppe Andreoni, Nick Dulake, Paul Chamberlain, Omar Abou Khlaed, Elena Mugellini

Dans Andreoni, Giuseppe, Mambretti, Cinzia, Digital health technology for better aging: a multidisciplinary approach  (Pp. 195-204). 2021,  Cham : Springer

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Résumé:

E-coaches are promising tools for health interventions, being scalable and relatively low costs compared to human coaches. Nevertheless, they cannot compare to humans when it comes to trust and social companionship. Hence, many researches were held around the importance of tangible user interfaces in building trust and companionship during human-machine interaction. Co-design, in particular, is the act of creating with stakeholders within the design development process to ensure the results meet their needs and are usable. This chapter describes a design process method and the rationale for building an embodiment for a companion and a trustable e-coach. We also shed lights on the co-design process held in the NESTORE project, which was specifically conducted with older adults to build a vocal assistant that supports user’s behavioral change, as well as to increase the social bonding with the NESTORE e-coach.

Locomotor illusions are generated by perceptual body-environment organization
Article scientifique ArODES

Martin Dobricki, David Weibel, Leonardo Angelini, Elena Mugellini, Fred W. Mast

PLOS ONE,  2021, vol. 16, no. 5, article no. e0251562

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Résumé:

While one is walking, the stimulation by one’s body forms a structure with the stimulation by the environment. This locomotor array of stimulation corresponds to the human-environment relation that one’s body forms with the environment it is moving through. Thus, the perceptual experience of walking may arise from such a locomotor array of stimulation. Humans can also experience walking while they are sitting. In this case, there is no stimulation by one’s walking body. Hence, one can experience walking although a basic component of a locomotor array of stimulation is missing. This may be facilitated by perception organizing the sensory input about one’s body and environment into a perceptual structure that corresponds to a locomotor array of stimulation. We examined whether locomotor illusions are generated by this perceptual formation of a locomotor structure. We exposed sixteen seated individuals to environmental stimuli that elicited either the perceptual formation of a locomotor structure or that of a control structure. The study participants experienced distinct locomotor illusions when they were presented with environmental stimuli that elicited the perceptual formation of a locomotor structure. They did not experience distinct locomotor illusions when the stimuli instead elicited the perceptual formation of the control structure. These findings suggest that locomotor illusions are generated by the perceptual organization of sensory input about one’s body and environment into a locomotor structure. This perceptual body-environment organization elucidates why seated human individuals experience the sensation of walking without any proprioceptive or kinaesthetic stimulation.

Classification of drivers' workload using physiological signals in conditional automation
Article scientifique ArODES

Quentin Meteier, Marine Capallera, Simon Ruffieux, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Marino Widmer, Andreas Sonderegger

Frontiers in Psychology,  2021, vol. 12, article no. 596038

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Résumé:

The use of automation in cars is increasing. In future vehicles, drivers will no longer be in charge of the main driving task and may be allowed to perform a secondary task. However, they might be requested to regain control of the car if a hazardous situation occurs (i.e., conditionally automated driving). Performing a secondary task might increase drivers' mental workload and consequently decrease the takeover performance if the workload level exceeds a certain threshold. Knowledge about the driver's mental state might hence be useful for increasing safety in conditionally automated vehicles. Measuring drivers' workload continuously is essential to support the driver and hence limit the number of accidents in takeover situations. This goal can be achieved using machine learning techniques to evaluate and classify the drivers' workload in real-time. To evaluate the usefulness of physiological data as an indicator for workload in conditionally automated driving, three physiological signals from 90 subjects were collected during 25 min of automated driving in a fixed-base simulator. Half of the participants performed a verbal cognitive task to induce mental workload while the other half only had to monitor the environment of the car. Three classifiers, sensor fusion and levels of data segmentation were compared. Results show that the best model was able to successfully classify the condition of the driver with an accuracy of 95%. In some cases, the model benefited from sensors' fusion. Increasing the segmentation level (e.g., size of the time window to compute physiological indicators) increased the performance of the model for windows smaller than 4 min, but decreased for windows larger than 4 min. In conclusion, the study showed that a high level of drivers' mental workload can be accurately detected while driving in conditional automation based on 4-min recordings of respiration and skin conductance.

2020

"Hi This Is NESTORE, your personal assistant" :
Article scientifique ArODES
design of an integrated IoT system for a personalized coach for healthy aging

Filippo Palumbo, Antonino Crivello, Francesco Furfari, Michele Girolami, Alfonso Mastropietro, Giorgio Manfredelli, Christina Röcke, Sabrina Guye, Antoni Salvá Casanovas, Maurizio Caon, Francesco Carrino, Omar Abou Khaled, Elena Mugellini, Enrico Denna, Marco Mauri, David Ward, Paula Subías-Beltrán, Silvia Orte, Ciprian Candea, Gabriele Candea, Giovanna Rizzo

Frontiers in Digital Health,  2020, vol. 2, article 545949, pp. 1-17

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Résumé:

In the context of the fourth revolution in healthcare technologies, leveraging monitoring and personalization across different domains becomes a key factor for providing useful services to maintain and promote well-being. This is even more crucial for older people, with aging being a complex multi-dimensional and multi-factorial process which can lead to frailty. The NESTORE project was recently funded by the EU Commission with the aim of supporting healthy older people to sustain their well-being and capacity to live independently. It is based on a multi-dimensional model of the healthy aging process that covers physical activity, nutrition, cognition, and social activity. NESTORE is based on the paradigm of the human-in-the-loop cyber-physical system that, exploiting the availability of Internet of Things technologies combined with analytics in the cloud, provides a virtual coaching system to support healthy aging. This work describes the design of the NESTORE methodology and its IoT architecture. We first model the end-user under several domains, then we present the NESTORE system that, analyzing relevant key-markers, provides coaching activities and personalized feedback to the user. Finally, we describe the validation strategy to assess the effectiveness of NESTORE as a coaching platform for healthy aging.

Design of an ergonomic gestural interface for professional road cycling
Article scientifique ArODES

Maurizio Caon, Rico Süsse, Benoit Grelier, Omar Abou Khaled, Elena Mugellini

Work,  2020, vol. 66, pp. 933-944

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Résumé:

BACKGROUND: Connected bike computers can support professional cyclists in achieving better performances but interacting with them requires taking their hands off the handlebar compromising focus and safety. OBJECTIVE: This research aims at exploring the design of an ergonomic interface based on micro-gestures that can allow cyclists to interact with a device while holding the handlebar. METHODS: Three different studies were conducted with seven professional cyclists adopting the gesture-elicitation technique. One study aimed at eliciting free micro-gestures; a second to evaluate gestures recognizable with a smart glove; the last focused on the gestures recognized through an interactive armband. RESULTS: The analysis of the micro-gestures elicited during these studies allowed producing a first set of guidelines to design gestural interfaces for drop-bars (a specific type of handlebar for road bikes). These guidelines suggest which fingers to use and how to design their movement in order to provide an ergonomic interface. It also introduces the principle of symmetry for the attribution of symbols to symmetric referents. Finally, it provides suggestions on the design of the interactive drop-bar. CONCLUSIONS: The guidelines provided in this paper can support the design of gestural interfaces for professional cyclists that can enhance performance and increase safety.

The effect of instructions and context-related information about limitations of conditionally automated vehicles on situation awareness
Article scientifique ArODES

Quentin Meteier, Marine Capallera, Andreas Sonderegger, Leonardo Angelini, Stefano Carrino, Elena Mugellini, Omar Abou Khaled

Proceedings of AutomotiveUI '20: 12th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, 21-22 September 2020, Online Conference,  pp. 241-251

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Résumé:

In conditionally automated driving, drivers do not have to constantly monitor their vehicle but they must be able to take over control when necessary. In this paper, we assess the impact of instructions about limitations of automation and the presentation of context-related information through a mobile application on the situation awareness and takeover performance of drivers. We conducted an experiment with 80 participants in a fixed-base driving simulator. Participants drove for an hour in conditional automation while performing secondary tasks on a tablet. Besides, they had to react to five different takeover requests. In addition to the assessment of behavioral data (e.g. quality of takeover), participants rated their situation awareness after each takeover situation. Instructions and context-related information on limitations combined showed encouraging results to raise awareness and improve takeover performance.

Virtual coaches for older adults’ wellbeing :
Article scientifique ArODES
a systematic review

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Francesco Carrino, Christina Röcke, Sabrina Guye, Giovanna Rizzo, Alfonso Mastropietro, Martin Sykora, Suzanne Elayan, Isabelle Kniestedt, Canan Ziylan, Emanuele Lettieri, Omar Abou Khaled, Elena Mugellini

IEEE Access,  2020, vol. 8, pp. 101884-101902

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Résumé:

Virtual Coaches, also known as e-coaches, are a disruptive technology in healthcare. Indeed, among other usages, they might provide cost-effective solutions for increasing human wellbeing in different domains, such as physical, nutritional, cognitive, social, and emotional. This paper presents a systematic review of virtual coaches specifically aimed at improving or maintaining older adults' health in the aforementioned domains. Such digital systems assume various forms, from classic apps, to more advanced conversational agents or robots. Fifty-six articles describing a virtual coach for older adults and aimed at improving their wellbeing were identified and further analyzed. In particular, we presented how previous studies defined their virtual coaches, which behavioral change models and techniques they adopted and the overall system architecture, in terms of monitoring solutions, processing methods and modalities for intervention delivery. Our results show that few thorough evaluations of e-coaching systems have been conducted, especially regarding multi-domain coaching approaches. Through our analysis, we identified the wellbeing domains that should be addressed in future studies as well as the most promising behavior change models and techniques and coaching interfaces. Previous work illustrates that older adults often appreciate conversational agents and robots. However, the lack of a multidomain intervention approach in the current literature motivates us to seek to define future solutions.

Personage VR – A Virtual Reality Story-Telling Tool to Raise Awareness About Ageism.
Chapitre de livre

Carrino Francesco, Moullet Valentin, Abou Khaled Omar, Mugellini Elena, Maggiori Christian

Dans T. Ahram, R. Taiar, V. Gremeaux-Bader & K. Aminian,  Human Interaction, Emerging Technologies and Future Applications II. 2020,  Cham, Switzerland : Advances in Intelligent Systems and Computing

Étude exploratoire pour un programme de sensibilisation vis-à-vis de l’âgisme
Rapport
Rapport intermédiaire

Maggiori Christian, Mugellini Elena, Carrino Francesco, F. Angelini, Curty Gaël

2020,  Lausanne, Suisse : Fondation Leenaards,  000  p.

Training Pedestrian Safety Skills in Youth with Intellectual Disabilities Using Fully Immersive Virtual Reality.
Article scientifique
A Feasibility Study

Cherix Robin, Piérart Geneviève, Abou Khaled Omar, Mugellini Elena,

HCI International 2020 - Late Breaking Papers., 2020

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2019

No evidence that frontal optical flow affects perceived locomotor speed and locomotor biomechanics when running on a treadmill
Article scientifique ArODES

Martina Caramenti, Claudio L. Lafortuna, Elena Mugellini, Omar Abou Khaled, Jean-Pierre Bresciani, Amandine Dubois

Applied Sciences,  2019, vol. 9, no. 21

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Résumé:

We investigated how the presentation and the manipulation of an optical flow while running on a treadmill affect perceived locomotor speed (Experiment 1) and gait parameters (Experiment 2). In Experiment 1, 12 healthy participants were instructed to run at an imposed speed and to focus on their sensorimotor sensations to be able to reproduce this running speed later. After a pause, they had to retrieve the reference locomotor speed by manipulating the treadmill speed while being presented with different optical flow conditions, namely no optical flow or a matching/slower/faster optical flow. In Experiment 2, 20 healthy participants ran at a previously self-selected constant speed while being presented with different optical flow conditions (see Experiment 1). The results did not show any effect of the presence and manipulation of the optical flow either on perceived locomotor speed or on the biomechanics of treadmill running. Specifically, the ability to retrieve the reference locomotor speed was similar for all optical flow conditions. Manipulating the speed of the optical flow did not affect the spatiotemporal gait parameters and also failed to affect the treadmill running accommodation process. Nevertheless, the virtual reality conditions affected the heart rate of the participants but without affecting perceived effort.

The NESTORE e-coach :
Article scientifique ArODES
accompanying older adults through a personalized pathway to wellbeing

Leonardo Angelini, Elena Mugellini, Omar Abou Khaled, Christina Röcke, Sabrina Guye, Simone Porcelli, Alfonso Mastropietro, Giovanna Rizzo, Noemi Boqué, Paula Subias, Silvia Orte, Giuseppe Andreoni

ICPS Proceedings, PETRA'19 : Proceedings of the 12th ACM International Conference on Pervasive Technologies Related to Assistive Environments, 5-7 June 2019, Rhodes, Greece,  pp. 620-628

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Résumé:

This paper describes the NESTORE e-coaching strategy and system architecture and its unique approach to support older adults to achieve a healthier lifestyle. The novelty of the NESTORE project is the definition of a multi-domain personalized pathway where the e-coach accompany the user throughout different structured and non-structured coaching activities and recommendations. The NESTORE e-Coach is the result of a highly multidisciplinary EU project, granted under the call SC1-PM-15-2017.

Codesign of public spaces for intercultural communication, diversity and inclusion
Chapitre de livre ArODES

Alessandra Rinaldi, Leonardo Angelini, Abou Khaled, Elena Mugellini, Maurizio Caon

Dans Di Bucchianico, Giuseppe, Advances in design for inclusion : proceedings of the AHFE 2019 International Conference on design for inclusion and the AHFE 2019 International Conference on human factors for apparel and textile engineering, July 24-28, 2019, Washington D.C., USA  (Pp. 186-195). 2019,  Cham, Switzerland : Springer

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The consistent phenomenon of immigration from countries with different cultures, that characterized the last decade, has changed the use of public spaces in European cities. The need to develop innovative solutions aimed at improving intercultural inclusion and mutual understanding of all citizens emerges, so that urban spaces become inclusive, safe and sustainable. This research project is focused on two main questions: (1) can design and technology enable the creation of a different way of living the public space to catalyze interpersonal interaction and to promote a shared sense of citizenship? (2) is it possible to support intercultural communication and to facilitate social inclusion through the design of innovative and interactive public spaces equipped with smart urban furniture? This paper presents three Design Orienting Scenarios as results of the research conducted by several experts, professionals and people with different cultural backgrounds during a focus groups and two different workshops where they made converge competences from design, business, engineering and social sciences to find innovative solutions for the social inclusion of migrants in urban areas.

Regular physical activity modulates perceived visual speed when running in treadmill-mediated virtual environments
Article scientifique ArODES

Martina Caramenti, Claudio L. Lafortuna, Elena Mugellini, Omar Abou Khaled, Jean-Pierre Bresciani, Amandine Dubois

PLOS ONE,

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In virtual reality, visual speed is usually underestimated relative to locomotor speed. Here we investigated how physical activity and fitness affect perceived visual speed when running in a treadmill-mediated virtual environment. Thirty healthy participants (ten sedentary individuals, ten team sport players and ten expert runners) ran on a treadmill at two different speeds (8, 12km/h) in front of a moving virtual scene. Participants were asked to match the speed of the visual scene to their running speed (i.e. treadmill speed), indicating for each trial whether the scene was moving slower or faster than the treadmill. The speed of the visual scene was adjusted according to the participant’s response using a staircase until visual and running speeds were perceived as equivalent. More sedentary participants underestimated visual speed relative to their actual running speed. Specifically, visual speed had to exceed running speed to be perceived as equivalent. The underestimation of visual speed was speed-dependent, and it was significantly larger for sedentary participants than for team sports players and expert runners. The volume of physical activity per week was found to be the best predictor of visual speed perception for both running speeds, while the perceived effort constituted a good predictor only at 8km/h. Physical fitness, on the other hand turned out to be a poor predictor of visual speed perception. Therefore, in order to enhance users’ engagement and their adherence to physical activity programs, the development of “personalized” treadmill-mediated virtual environments should take into account users’ personal characteristics to provide the most natural and engaging feedback possible.

Owner Manuals Review and Taxonomy of ADAS Limitations in Partially Automated Vehicles
Article scientifique

Capallera Marine, Meteier Quentin, De Salis Emmanuel, Carrino Stefano, Angelini Leonardo, Abou Khaled Omar, Mugellini Elena

AutomotiveUI '19: Proceedings of the 11th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, 2019

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In the context of highly automated driving, the driver has to be aware of driving risks and to take over control of the car in hazardous situations. The goal of this paper is to categorize and analyze the factors that lead to such critical scenarios. To this purpose, we analyzed limitations of Advanced Driver-Assistance Systems (ADAS) extracted from owner manuals of 12 partially automated cars available on the market. A taxonomy with 6 macro-categories and 26 micro-categories is proposed to classify and better understand the limitations of these vehicles. We also investigated if these limitations are conveyed to the driver through Human-Machine Interaction (HMI) in the car. Some suggestions are made to better communicate these limitations to the driver in order to raise his/her situation awareness.

Workshop on explainable AI in automated driving: a user-centered interaction approach
Article scientifique

Meteier Quentin, Capallera Marine, Angelini Leonardo, Mugellini Elena, Abou Khaled Omar, Carrino Stefano, De Salis Emmanuel, Stéphane Galland, Susanne Boll

AutomotiveUI '19: Proceedings of the 11th International Conference on Automotive User Interfaces and Interactive Vehicular Applications: Adjunct Proceedings, 2019

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Résumé:

With the increasing use of automation, users tend to delegate more tasks to the machines. Such complex systems are usually developed with "black box" Artificial Intelligence (AI), which makes these systems difficult to understand for the user. This assumption is particularly true in the field of automated driving since the level of automation is constantly increasing via the use of state-of-the-art AI solutions. We believe it is important to investigate the field of Explainable AI (XAI) in the context of automated driving since interpretability and transparency are key factors for increasing trust and security. In this workshop, we aim at gathering researchers and industry practitioners from different fields to brainstorm about XAI with a special focus on human-vehicle interaction. Questions like "what kind of explanation do we need", "which is the best trade-off between performance and explainability" and "how granular should the explanations be" will be addressed in this workshop.

2018

Utilizzare il design partecipativo per l'innovazione sostenibile
Article scientifique ArODES

Maurizio Caon, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Rivista italiana di ergonomia,  2018, no. 16, pp. 9-23

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Designing urban smart furniture for facilitating migrants' integration :
Chapitre de livre ArODES
the co-design workshop as approach for supporting inclusive design

Alessandra Rinaldi, Maurizio Caon, Omar Abou Khaled, Elena Mugellini

Dans Bagnara, Sebastiano, Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) : volume VII: ergonomics in design, design for all, activity theories for work analysis and design, affective design  (Pp. 461-470). 2018,  Cham : Springer

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European cities are changing due the immigration of people from different cultures. There are many issues related to the integration and dialogue between cultures. Urban design plays a key role in how migrants participate in their host community and it is an important driver for the inclusion process. Facilitating the participation of residents in designing public spaces and their use helps to create a better sense of belonging. Promoting in public spaces the interaction of different cultures becomes a crucial element to facilitate social cohesion and living together. The research project explores an innovative approach in the use of public spaces, through the design of smart urban furniture. Based on a survey of the user’s needs, and on co-design activities, the project investigates innovative solutions for facilitating migrants’ integration and the dialogue between different cultures, through the design of innovative urban furniture, with smart technologies embodied inside. The project, based on the co-design approach of rapid prototyping, creates different kinds of new interaction among urban space and people, and between users of different social or cultural background. The results presented in this paper, were conducted by the research unit of the University of Florence, in cooperation with the Human Tech Institute and the School of Management of the University of Applied Sciences and Arts Western Switzerland.

Gesturing on the handlebar :
Chapitre de livre ArODES
a user-elicitation study for on-bike gestural interaction

Maurizio Caon, Rico Süsse, Benoit Grelier, Omar Abou Khaled, Elena Mugellini

Dans Bagnara, Sebastiano, Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) : volume VII: ergonomics in design, design for all, activity theories for work analysis and design, affective design  (Pp. 429-439). 2018,  Cham : Springer

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There are growing numbers of apps and smartphone-mounts for professional cyclists, since they are crucial to track performances during training. However, these solutions require the athlete to take her hand off the handlebar to interact with it. This represents a major safety issue for the cyclists since it requires leaving the brake control, shifting the attention and, possibly, compromising posture. This paper reports the findings of a user elicitation study conducted with seven professional and semi-professional cyclists in order to design gestures that can be performed while maintaining the hands in the correct position on the handlebar. Results report the frequency of fingers used for these gestures, with the index being the favorite. Furthermore, it provides a classification of gestures in three categories: press, extension and swipe. The most convenient gestures were the thumb and index press, followed by the extension of different combinations of fingers.

My pain coach :
Chapitre de livre ArODES
a mobile system with tangible interface for pain assessment

Maurizio Caon, Leonardo Angelini, Katharina Ledermann, Chantal Martin-Sölch, Omar Abou Khaled, Elena Mugellini

Dans Bagnara, Sebastiano, Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018) : volume VII: ergonomics in design, design for all, activity theories for work analysis and design, affective design  (Pp. 1372-1381). 2018,  Cham : Springer

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Résumé:

Pain assessment is an essential first step in planning for and providing pain management. Access to effective pain management programs is often limited, due to scarcity of services. Other barriers to treatment include physical symptoms that limit mobility, distance from a clinic, transportation requirements and cost constraints. In response to these barriers to service delivery, the demand for online health resources is growing. However, current solutions present a number of shortcomings, in particular when referring to usability and accessibility. This paper presents the vision of the My Pain Coach system and the first prototype generated as the result of the first iteration of the development process. This prototype is based on a smartphone app and presents two different interfaces: a force-sensitive touchscreen, and a tangible interface based on a textile mat. A preliminary usability evaluation has been conducted and the results show that these interfaces are perceived as excellent from a usability point of view. Nevertheless, further development and testing are still required for the tangible interface.

Eudaimonic gamification to engage cancer patients in positive coping strategies
Chapitre de livre ArODES

João Ventura, Sandy Ingram, Maurizio Caon, Maya Zumstein-Shaha, Omar Abou Khaled, Elena Mugellini

Dans Kurosu, Masaaki, Human-computer interaction : interaction in context : 20th International Conference, HCI International 2018, Las Vegas, NV, USA, July 15–20, 2018, Proceedings, Part II  (Pp. 206-218). 2018,  Cham : Springer

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This paper presents a mobile gamified application encouraging positive coping strategies for patients of serious and possibly fatal illnesses. The application concept is based on the analogy between one’s lifetime memories and future bucket lists and a journey in the sea of remembrance, traveling back and forth between past and present positive moments and future wish-lists, whilst being aware that life as water, goes on. This concept was co-designed by a team of UX researchers, engineers, and domain experts applying the principles of Eudaimonic design. The iterative development process brought to the final prototype: a multimedia diary with a gameful interface, which is thoroughly described, along with the relative heuristic and empirical evaluations, in this paper.

Linking user profiles in social networks :
Article scientifique ArODES
a comparative review

Hussein Hazimeh, Elena Mugellini, Omar Abou Khaled, Philippe Cudré-Mauroux

International Journal of Social Network Mining,  2018, vol. 2, no. 4, pp. 333-361

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Résumé:

The existence of user profiles belonging to a single user across different social networking sites poses several challenges to the research community. The main technical issue in that context is to detect the same user profiles across several different social networks by leveraging a set of mechanisms that identify the similarity among the user profiles. This problem is commonly referred to as entity matching or identity linkage on social networks. In this review, we describe and compare the 27 most important (to the best of our knowledge) research papers in this area. The main contributions of this article are to provide a systematic and integrated review of papers in this area, to provide comparative points that simplify the understanding of such systems, and finally to discuss future research avenues.

Lexicon-based sentiment analysis approach for ranking event entities
Article scientifique ArODES

Sajida Chamass, Hussein Hazimeh, Jawad Makki, Elena Mugellini, Omar Abou Khaled

International Journal of Services and Standards,  2018, vol. 12, no. 2, pp. 126-139

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Résumé:

Social media platforms (SMP) are new resource for data analytics. Multiple aspects can be studied by using its variety of features. Sentiment analysis (SA) is a rising research topic in SMPs. SA approaches on studying and analysing events are still missing several shortcomings. In this paper, we address the problem of ranking event entities and propose a novel approach for this goal. An entity is a person who presents some task in such event, for e.g., a researcher in a conference. To achieve our target, we employ the lexical approach, in addition to associating features from both Facebook and Twitter platforms. We used Facebook reactions also, that not been used in the state-of-the-art approaches. Our results have shown that by associating both features from Facebook and Twitter and by using reactions, we can successfully rank entities participating in a specific event having high precision.

Matching optical flow to motor speed in virtual reality while running on a treadmill
Article scientifique ArODES

Martina Caramenti, Claudio L. Lafortuna, Elena Mugellini, Omar Abou Khaled, Jean-Pierre Bresciani, Amandine Dubois

PLOS ONE,

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Résumé:

We investigated how visual and kinaesthetic/efferent information is integrated for speed perception in running. Twelve moderately trained to trained subjects ran on a treadmill at three different speeds (8, 10, 12 km/h) in front of a moving virtual scene. They were asked to match the visual speed of the scene to their running speed–i.e., treadmill’s speed. For each trial, participants indicated whether the scene was moving slower or faster than they were running. Visual speed was adjusted according to their response using a staircase until the Point of Subjective Equality (PSE) was reached, i.e., until visual and running speed were perceived as equivalent. For all three running speeds, participants systematically underestimated the visual speed relative to their actual running speed. Indeed, the speed of the visual scene had to exceed the actual running speed in order to be perceived as equivalent to the treadmill speed. The underestimation of visual speed was speed-dependent, and percentage of underestimation relative to running speed ranged from 15% at 8km/h to 31% at 12km/h. We suggest that this fact should be taken into consideration to improve the design of attractive treadmill-mediated virtual environments enhancing engagement into physical activity for healthier lifestyles and disease prevention and care.

Feet fidgeting detection based on accelerometers using decision tree learning and gradient boosting
Chapitre de livre ArODES

Julien Esseiva, Maurizio Caon, Elena Mugellini, Omar Abou Khaled, Kamiar Aminian

Dans Ortuño, Francesco, Rojas, Ignacio, Bioinformatics and Biomedical Engineering : 6th International Work-Conference, IWBBIO 2018, Granada, Spain, April 25–27, 2018, Proceedings, Part I  (Pp. 75-84). 2018,  Cham : Springer

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Résumé:

Detection of fidgeting activities is a field which has not been much explored as of now. Studies have shown that fidgeting has a beneficial impact on people's healthiness as it burns a significant amount of energy. Being able to detect when someone is fidgeting would allow to study more closely the health impact of fidgeting. The purpose of this work is to propose an algorithm being able to detect feet fidgeting period of subjects while sitting using 3D accelerometers on both shoes. Initial results on data from 5 subjects collected during this work shows an accuracy of 95% for a classification between sitting with fidgeting and sitting without fidgeting.

Internet of tangible things (IoTT) :
Article scientifique ArODES
challenges and opportunities for tangible interaction with IoT

Leonardo Angelini, Elena Mugellini, Omar Abou Khaled, Nadine Couture

Informatics,  2018, vol. 5(1), no. 7

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Résumé:

In the Internet of Things era, an increasing number of everyday objects are able to offer innovative services to the user. However, most of these devices provide only smartphone or web user interfaces. As a result, the interaction is disconnected from the physical world, decreasing the user experience and increasing the risk of user alienation from the physical world. We argue that tangible interaction can counteract this trend and this article discusses the potential benefits and the still open challenges of tangible interaction applied to the Internet of Things. After an analysis of open challenges for Human-Computer Interaction in IoT, we summarize current trends in tangible interaction and extrapolate eight tangible interaction properties that could be exploited for designing novel interactions with IoT objects. Through a systematic review of tangible interaction applied to IoT, we show what has been already explored in the systems that pioneered the field and the future explorations that still have to be conducted. In order to guide future work in this field, we propose a design card set for supporting the generation of tangible interfaces for IoT objects. The card set has been evaluated during a workshop with 21 people and the results are discussed.

Towards the nestore e-coach: a tangible and embodied conversational agent for older adults
Article scientifique

El Kamali Mira, Angelini Leonardo, Caon Maurizio, Giuseppe Andreoni, Abou Khaled Omar, Mugellini Elena

Proceedings of the 2018 ACM International Joint Conference and 2018 International Symposium on Pervasive and Ubiquitous Computing and Wearable Computers, 2018

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Résumé:

The ability to engage the user in a conversation and the credibility of the system are two fundamental characteristics of virtual coaches. In this paper, we present the architecture of a conversational e-coach for promoting healthy lifestyles in older age, developed in the context of the NESTORE H2020 EU project. The proposed system allows multiple access points to a conversational agent via different interaction modalities: a tangible companion that embodies the virtual coach will leverage voice and other non-verbal cues in the domestic environment, while a mobile app will integrate a text-based chat for a ubiquitous intervention. In both cases, the conversational agent will deliver personalized interventions based on behavior change models and will promote trust by means of emotionally rich conversations.

2017

Human behavior modeling In video surveillance of conference halls
Article scientifique ArODES

Nour Charara, Hussein Charara, Omar Abou Khaled, Hani Abdallah, Elena Mugellini

World Academy of Science, Engineering and Technology ; International Journal of Computer and Information Engineering,  2017, vol. 11, no. 9, pp. 996-1001

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Résumé:

In this paper, we present a human behavior modeling approach in videos scenes. This approach is used to model the normal behaviors in the conference halls. We exploited the Probabilistic Latent Semantic Analysis technique (PLSA), using the 'Bag-of-Terms' paradigm, as a tool for exploring video data to learn the model by grouping similar activities. Our term vocabulary consists of 3D spatio-temporal patch groups assigned by the direction of motion. Our video representation ensures the spatial information, the object trajectory, and the motion. The main importance of this approach is that it can be adapted to detect abnormal behaviors in order to ensure and enhance human security.

Bien-être psychologique avec l'âge
Article professionnel ArODES

Leonardo Angelini, Francesco Carrino, Maurizio Caon, Elena Mugellini, Omar Abou Khaled, Nadine Couture

Angewandte GERONTOLOGIE Appliquée,  2017, vol. 2

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Résumé:

La perte progressive de mobilité chez les seniors peut avoir de lourdes conséquences, pas seulement physiques, mais aussi psychiques et cognitives due à un isolement social croissant. La fenêtre interactive est un outil permettant la communication à distance. Elle est issue d’un projet de recherche qui vise à réduire l’isolement social des seniors en utilisant de nouvelles technologies de manière innovante.

2016

Senior Living Lab :
Article scientifique ArODES
an ecological approach to foster social innovation in an ageing society

Stefano Angelini, Stefano Carrino, Omar Abou Khaled, Susie Riva-Mossman, Elena Mugellini

Future Internet,  2016, vol. 8, no. 50

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Résumé:

The Senior Living Lab (SLL) is a transdisciplinary research platform created by four Universities that aims at promoting ageing well at home through the co-creation of innovative products, services and practices with older adults. While most living labs for ageing well are focused on Information and Communication Technologies (ICTs), this social laboratory adopts a transdisciplinary approach, bringing together designers, economists, engineers and healthcare professionals to develop multiple forms of social innovation using participatory methods. The SLL is based on an ecological approach, connecting professionals and users in a cooperative network and involving all of the stakeholders concerned with ageing well, such as existing associations, business entities and policy-makers. Three main themes for the co-design of products and services were identified at the beginning of the SLL conception, each sustained by a major business partner: healthy nutrition to cope with frailty, improved autonomous mobility to foster independence and social communication to prevent isolation. This article shows the innovative transdisciplinary approach of the SLL and discusses the particular challenges that emerged during the first year of its creation, investigating the role of ICTs when designing products and services for older adults.

iNUIT :
Article scientifique ArODES
Internet of Things for Urban Innovation

Francesco Carrino, Elena Mugellini, Omar Abou Khaled, Nabil Ouerhani, Juergen Ehrensberger

Future Internet,  2016, vol. 8, no. 18

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Résumé:

Internet of Things (IoT) seems a viable way to enable the Smart Cities of the future. iNUIT (Internet of Things for Urban Innovation) is a multi-year research program that aims to create an ecosystem that exploits the variety of data coming from multiple sensors and connected objects installed on the scale of a city, in order to meet specific needs in terms of development of new services (physical security, resource management, etc.). Among the multiple research activities within iNUIT, we present two projects: SmartCrowd and OpEc. SmartCrowd aims at monitoring the crowd’s movement during large events. It focuses on real-time tracking using sensors available in smartphones and on the use of a crowd simulator to detect possible dangerous scenarios. A proof-of-concept of the application has been tested at the Paléo Festival (Switzerland) showing the feasibility of the approach. OpEc (Optimisation de l’Eclairage public) aims at using IoT to implement dynamic street light management and control with the goal of reducing street light energy consumption while guaranteeing the same level of security of traditional illumination. The system has been tested during two months in a street in St-Imier (Switzerland) without interruption, validating its stability and resulting in an overall energy saving of about 56%.

Testing the tangible interactive window with older adults
Article scientifique ArODES

Leonardo Angelini, Francesco Carrino, Maurizio Caon, Frédéric Lemaréchal, Nadine Couture, Omar Abou Khaled, Elena Mugellini

GeroPsych,  2016, vol. 29, no. 4, pp. 215-224

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Résumé:

Social relationships are crucial for older adults’ well-being. Past research demonstrated that video-communication technology could reduce social isolation. However, most commercial telecommunication systems have interfaces that are too complex to be operated by older adults without assistance. In this paper, we present a system that exploits the tangible affordances of a physical window to provide a natural interface for an always-on video-communication system. In addition, we present a case study focused on the system accessibility and user acceptance with 8 older adults living in a retirement home. We also describe the preliminary findings based on an observation study and on a semistructured interview. Finally, we discuss the possible improvements and impact this system might have on older adults’ life.

iNUIT: Internet of Things for Urban Innovation
Article scientifique

Ouerhani Nabil, Carrino Francesco, Abou Khaled Omar, Mugellini Elena, Ehrensberger Jürgen

Future Internet Journal, 2016

2015

Move, hold and touch :
Article scientifique ArODES
a framework for tangible gesture interactive systems

Leonardo Angelini, Denis Lalanne, Elise van den Hoven, Omar Abou Khaler, Elena Mugellini

Machines,  2015, vol. 3, pp. 173-207

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Résumé:

Technology is spreading in our everyday world, and digital interaction beyond the screen, with real objects, allows taking advantage of our natural manipulative and communicative skills. Tangible gesture interaction takes advantage of these skills by bridging two popular domains in Human-Computer Interaction, tangible interaction and gestural interaction. In this paper, we present the Tangible Gesture Interaction Framework (TGIF) for classifying and guiding works in this field. We propose a classification of gestures according to three relationships with objects: move, hold and touch. Following this classification, we analyzed previous work in the literature to obtain guidelines and common practices for designing and building new tangible gesture interactive systems. We describe four interactive systems as application examples of the TGIF guidelines and we discuss the descriptive, evaluative and generative power of TGIF.

Gesture recognition corpora and tools :
Article scientifique ArODES
a scripted ground truthing method

Simon Ruffieux, Denis Lalanne, Elena Mugellini, Omar Abou Khaled

Computer Vision and Image Understanding,  2015, vol. 131, pp. 72-87

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Résumé:

This article presents a framework supporting rapid prototyping of multimodal applications, the creation and management of datasets and the quantitative evaluation of classification algorithms for the specific context of gesture recognition. A review of the available corpora for gesture recognition highlights their main features and characteristics. The central part of the article describes a novel method that facilitates the cumbersome task of corpora creation. The developed method supports automatic ground truthing of the data during the acquisition of subjects by enabling automatic labeling and temporal segmentation of gestures through scripted scenarios. The temporal errors generated by the proposed method are quantified and their impact on the performances of recognition algorithm are evaluated and discussed. The proposed solution offers an efficient approach to reduce the time required to ground truth corpora for natural gestures in the context of close human–computer interaction.

2014

PEGASO :
Chapitre de livre ArODES
a personalised and motivational ICT system to empower adolescents towards healthy lifestyle

Stefano Carrino, Maurizio Caon, Leonardo Angelini, Elena Mugellini, Omar Abou Khaled, Silvia Orte, Eloisa Vargiu, Neil Coulson, José C. E. Serrano, Sarah Tabozzi, Neil Lafortuna, Giovanna Rizzo

Dans Graña, Manuel, Howlett, Robert J., Jain, Lakhmi C., Toro, Carlos, Innovation in medicine and helathcare 2014  (pp. 350-359). 2014,  Amsterdam, The Netherlands : IOS Press

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Résumé:

Unhealthy alimentary behaviours and physical inactivity habits are key risk factors for major non communicable diseases. Several researches demonstrate that juvenile obesity can lead to serious medical conditions, pathologies and have important psycho-social consequences. PEGASO is a multidisciplinary project aimed at promoting healthy lifestyles among teenagers through assistive technology. The core of this project is represented by the ICT system, which allows providing tailored interventions to the users through their smartphones in order to motivate them. The novelty of this approach consists of developing a Virtual Individual Model (VIM) for user characterization, which is based on physical, functional and behavioural parameters opportunely selected by experts. These parameters are digitised and updated thanks to the user monitoring through smartphone; data mining algorithms are applied for the detection of activity and nutrition habits and this information is used to provide personalised feedback. The user interface will be developed using gamified approaches and integrating serious games to effectively promote health literacy and facilitate behaviour change.

Affective interaction in smart environments
Article scientifique ArODES

Maurizio Caon, Leonardo Angelini, Omar Abou Khaled, Denis Lalanne, Yong Yue, Elena Mugellini

Procedia Computer Science,  2014, vol. 32, pp. 1016-1021

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Résumé:

We present a concept where the smart environments of the future will be able to provide ubiquitous affective communication. All the surfaces will become interactive and the furniture will display emotions. In particular, we present a first prototype that allows people to share their emotional states in a natural way. The input will be given through facial expressions and the output will be displayed in a context-aware multimodal way. Two novel output modalities are presented: a robotic painting that applies the concept of affective communication to the informative art and an RGB lamp that represents the emotions remaining in the user's peripheral attention. An observation study has been conducted during an interactive event and we report our preliminary findings in this paper.

Enhancement of conference organization using ontology based information correlation
Article scientifique ArODES

Hassan Noureddine, Iman Jarkass, Maria Sokhn, Omar Abou Khaled, Elena Mugellini

Computer Science and Information Technology,  2014, vol. 2, no. 2, pp. 63-71

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Résumé:

The world today witnessed an important transmission to the virtual world across the web. After years of interaction and exchanges between people, the web becomes saturated with enormous quantity of data in various fields. Therefore, the (semi-)automatic applications become necessity to find appropriate information in a brief time. In this context, we propose a new approach of ontology based information correlation from various web resources. As validator of this approach, we introduce the conference organizer system that will be useful during the setting up of a conference. Where we benefit from semantic web technologies to extract, correlate, rank and store information, and consequently propose a ranked lists of experts and social events depending on the user requests.

2012

Demonstration of a Monitoring Lamp to Visualize the Energy Consumption in Houses
Article scientifique

Gisler Christophe, Grazia Barchi, Gérôme Bovet, Mugellini Elena, Monnet Stephen

The 10th International Conference on Pervasive Computing (Pervasive 2012), 2012

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2009

MEMODULES as tangible shortcuts to multimedia information
Chapitre de livre ArODES

Aleksandar Boder, Elena Mugellini, Denis Lalanne, Bruno Dumas, Florian Evequoz, Sandro Gerardi, Anne Le Calve, Rolf Ingold, Omar Abou Khaled

In : LALANNE, Denis, KOHLAS, Jürg (eds). Human machine interaction : research results of the MMI program. Berlin : Springer, 2009. P. 103-132. (Lecture notes in computer science ; 5440). 2009

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6th  Sense– Toward a generic framework for end-to-end adaptive wearable augmented reality
Article scientifique ArODES

Damien Perritaz, Christophe Salzmann, Denis Gillet, Olivier Naef, Jacques Bapst, Frédéric Barras, Elena Mugellini, Omar Abou Khaled

Lecture Notes in Computer Science,  2009, vol. 5440, pp. 280-310

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Résumé:

Augmented Reality enhances user perception by overlaying real world information with virtual computer-generated information. The aims of the 6th Sense project are to improve real-time interaction between the real environment and the virtual world and to maximize the user experience in mobile Augmented Reality. To achieve these objectives a generic framework constituted of two main layers is proposed. The End-to-End Adaptation Layer adapts in real-time the parameters of the Augmented Reality system to provide the user with the best possible experience despite the varying operating conditions such as the transmission link and user head motion. The Generic Augmented Reality Layer encompasses solutions to the problem of overlaying adequate information in the real scene and manages multimodal interaction with the virtual environment.

2024

Exploring the benefits of physical features in virtual reality on customer experience
Conférence ArODES

Robin Cherix, Maud Julmy, Marine Capallera, Julien Roland, Elena Mugellini

Proceedings of the IHCI 2024 + GET 2024 + CGVCVIP 2024, 13-15 July 2024, Budapest, Hungary

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Résumé:

Virtual try-out experiences suffer from a lack of physicality. If consumers cannot touch or feel what they see, it is less likely for them to buy it. Here we present work in progress of an immersive luxury watch try-out experience. We added a 3D printed, weighted mock-up to enrich the experience. This mock-up is worn on the wrist, where the virtual watch appears. User tests show that the proposed experience is very well received and sparks interest for such experience.

Enhancing user immersion in virtual reality by integrating collective emotions through audio-visual analysis
Conférence ArODES

Sam Corpataux, Marine Capallera, Omar Abou Khaler, Elena Mugellini

Proceedings of the 15th International Conference on Applied Human Factors and Ergonomics (AHFE 2024), 24-27 July 2024, Nice, France ; Affective and Pleasurable Design

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Résumé:

Abstract: In the rapidly evolving field of virtual reality (VR), deep user immersion remains a major challenge for researchers and developers alike. Effectively integrating emotional cues into VR environments to enhance the user experience could be a key issue. This study introduces a positive advancement by presenting an innovative solution that combines audio and video analysis to detect and integrate collective emotion while watching 360° events. Our approach sets itself apart from previous work, which focused either on the visual or auditory aspect, by embracing a holistic perspective that more accurately mirrors the complexity of the human experience. We developed a machine-learning architecture that utilizes advanced models. Existing datasets have been enriched in a balanced way and are used to train various models, including a face extraction model, and emotion classification models based on spectrograms and audio features. Predictions from these analyses are merged to generate a value representative of crowd emotion valence using 360° videos as input. All models and the final architecture are assessed using accuracy, F1-score, precision and recall metrics. This proposed architecture enabled the creation of a nuanced representation of collective emotion, which is then used to generate targeted visual, auditory, and haptic stimuli. These stimuli are designed to enhance user engagement and immersion in VR by adding a layer of emotional interaction. The latter is assessed through user experience while watching 360° penalty event. The sound model architecture, which employs Random Forest and XGBoost models that feed into a meta-learner, achieves an accuracy of 98.71% on test set. Meanwhile, the model for classifying human facial emotions, tackling a challenging 7-class classification problem, achieves an accuracy of 56.15%. While this shows promising potential, incorporating additional visual elements such as object detection and scene analysis could further enrich the understanding of collective emotions and enhance the robustness of our model. The results of our study indicate that integrating these stimuli based on collective emotion recognition significantly increases user immersion. Tests with 10 participants demonstrate a notably pronounced improvement when haptic feedback is involved, highlighting the tactile dimension as an especially powerful channel for conveying and amplifying emotions in VR environments. This research has demonstrated that the integration of audio and visual analyses can significantly enhance the performance and robustness of crowd emotion detection models in VR environments. By synthesizing these two input modalities, we have been able to provide a more comprehensive understanding of collective emotions, which in turn has positively impacted the user’s immersion. These findings underscore the potential for more sophisticated and emotionally aware VR systems, suggesting that similar approaches could be beneficial in advancing the field and enriching the user experience across various applications.

2023

EYE LEARN :
Conférence ArODES
innovative pedagogical process using eye tracking to enhance systematic clinical reasoning and metacognition in acute care simulation

Jean-Michel Vasse, Alain Verdon, Catherine Senn-Dubey, Leonardo Angelini, Elena Mugellini, Quentin Meteier

Resuscitation Official Journal of the European Resuscitation Council Abstracts of Resuscitation 2023, 2-4 November 2023, Barcelona, Spain

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Development of the Train Therapy in a Nursing Home in Switzerland
Conférence ArODES

Sophie Jaquenod, Daniel Ducraux, Elena Mugellini, Leonardo Angelini

Proceedings of Human Aspects of IT for the Aged Population 9th International Conference, ITAP 2023, Held as Part of the 25th HCI International Conference, HCII 2023, 23-28 July 2023, Copenhagen, Denmark Proceedings, Part I

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Résumé:

With the aging population and the increasing number of major neurocognitive disorders in nursing homes, non-pharmacological interventions will play an important role in the future of care. The train therapy is an emerging intervention for coping with behavioral and psychological symptoms of dementia that relies on a railway travel simulator. Seniors, accompanied by healthcare professionals, can experience a train journey in a physical space disguised as a train wagon and displaying prerecorded videos from a train in a television disguised as a train window. This paper presents a novel and accessible railway travel simulator integrating an interactive ticket counter and we discuss the challenges and perspectives for the adoption of the train therapy.

Detecting Stress in VR 360° immersive experiences for older adults through eye tracking and psychophysiological signals
Conférence ArODES

Leonardo Angelini, Corentin Bompard, Omar Abou Khaled, Elena Mugellini

Proceedings of Human Aspects of IT for the Aged Population 9th International Conference, ITAP 2023, Held as Part of the 25th HCI International Conference, HCII 2023, 23-28 July 2023, Copenhagen, Denmark Proceedings, Part I

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Résumé:

This paper presents the architecture and a preliminary prototype of a system for detecting stress during immersive virtual reality (VR) simulations. The VR4AGE system is designed for professionals that wish to use virtual reality headsets to allow older adults with dementia to experience 360 videos with an increased safety. The system aims at using eye tracking and unobtrusive psychophysiological signal monitoring to detect cognitive activation and distress. Informing as soon as possible the healthcare professionals about the patient’s status would allow them to continue or stop the therapy, depending on the patient’s reactions. This could help assessing whether nursing home residents with dementia that are unable to speak and express their emotions react positively or negatively to the VR simulation.

Human or machine ? Detection of negative feedback on driving performance using electrodermal activity and machine learning
Conférence ArODES

Quentin Meteier, Elena Mugellini, Andreas Sonderegger

International Journal of Psychophysiology ; Proceedings of the 21st World Congress of Psychophysiology, 26-29 June 2023, Geneva, Switzerland(IOP 2023) of the International Organization of Psychophysiology (IOP),

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Enhancing the metacognition of nursing students using eye tracking glasses
Conférence ArODES

Quentin Meteier, Elena Mugellini, Leonardo Angelini, Alain Adrien Verdon, Catherine Senn-Dubey, Jean-Michel Vasse

Proceedings of the 2023 Symposium on Eye Tracking Research and Applications (ETRA'23), 30 may-2 June 2023, Tubingen, Germany

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Résumé:

Practical simulation is increasingly used to develop reasoning skills during learning. The analysis of the scene and the correct execution of actions require an awareness of the situation and the activities performed by the student. Eye-tracking feedback (i.e., a video recording of the practical simulation with an overlay of the gaze point) can allow students and teachers to enhance the skills of analysis and execution of the practical activities performed. In this article, we present the implementation of an innovative pedagogical process for nursing students in Switzerland. It involves the use of eye-tracking glasses to improve learning through the enhancement of metacognition after a simulation. The results of a first test session done with 15 undergraduate students are reported.

Effect of obstacle type and cognitive task on situation awareness and takeover performance in conditionally automated driving
Conférence ArODES

Quentin Meteier, Marine Capallera, Emmanuel de Salis, Leonardo Angelini, Stefano Carrino, Omar Abou Khaled, Elena Mugellini, Andreas Sonderegger

Proceeding sof the 34th international francophone conference on human-computer interaction

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Résumé:

En conduite automatisée, plusieurs facteurs peuvent affecter la conscience de la situation et la reprise de contrôle. Pour mieux comprendre cela, 88 participants ont passé 20 minutes dans un simulateur de conduite conditionnellement automatisée. Ils devaient réagir à quatre obstacles dont le danger et le mouvement variaient. La moitié des participants devaient s'engager dans une tâche cognitive verbale non liée à la conduite. La conscience de la situation, la performance et les réponses physiologiques ont été mesurées. Les résultats suggèrent que le mouvement de l'obstacle influence la perception du danger, la conscience de la situation et le temps de réaction, ce dernier étant également influencé par le danger de l'obstacle. La tâche cognitive verbale a également un effet sur le temps de réaction. Ainsi, l’état cognitif du conducteur et la situation de conduite (mouvement/danger des entités autour du véhicule) devraient être considérés lors de la transmission d'informations via les interfaces homme-véhicule.

Training nurses in VR :
Conférence ArODES
exploring spatial mapping and free-hand interaction

Marine Capallera, Leonardo Angelini, Alexandre Favre, François Magnin, Omar Abou Khaled, Elena Mugellini

Proceeding sof the 34th international francophone conference on human-computer interaction

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Résumé:

La réalité virtuelle offre un environnement de formation immersif dans l'enseignement des soins infirmiers, en particulier pour expérimenter des situations ne pouvant être perçues dans la réalité. Par un processus de conception centré sur l'humain avec des éducateurs.trices et des étudiant.es d'une école d'infirmières, nous avons développé une application de RV de formation à l'asepsie lors d'un prélèvement sanguin. La simulation permet de visualiser les risques de contamination lors de la procédure. Nous avons réalisé trois tests et amélioré continuellement l'application afin d'augmenter la facilité d'utilisation et le sentiment d'immersion. Nous avons comparé deux modalités d'interaction, deux visualisations des mains et différents degrés d'immersion (téléportation ou marche dans une représentation réelle d'une salle pour toucher les objets physiques). Ces expériences ont permis de tirer une conclusion sur le niveau d'immersion atteint par les nouvelles technologies de RV et sur leur implication possible dans la formation pratique des étudiant.es.

2022

Workshop on tangible xAI
Conférence ArODES

Leonardo Angelini, Nadine Couture, Kamali Mira, Quentin Meteier, Elena Mugellini

Proceedings of the european tangible interaction studio (ETS) 2022

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Résumé:

The goal of this workshop is to discuss the potential benefits and the open challenges of giving a physical form to Artificial Intelligence (AI), towards the definition of tangible, or graspable AI. In the workshop we will focus on the use-case of a convolutional Neural Network for image analysis and we will carry out a hands-on paper prototyping activity to imagine tangible interactive AI-powered systems where critical parameters of the Neural Network are physicalized. Such systems have the potential to lower the barrier for AI education and for making AI systems more trustable and explainable.

Machine learning agent to recommend the best modality for takeover during conditionally automated driving
Conférence ArODES

Emmanuel de Salis, Quentin Meteier, Marine Capallera, Colin Pelletier, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Marino Widmer, Stefano Carrino

AHFE International, Human Interaction Emerging Technologies (IHIET-AI 2022): Artificial Intelligence Future Applications

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Résumé:

In this study, we investigate how to make takeover in conditionally automated vehicles safer optimizing the takeover request modalities. Using Machine Learning algorithms, we created a smart agent recommending the best modalities combination to use (haptic-visual, auditory-visual and haptic-auditory-visual) to convey a takeover request. This agent considers the driver state before recommending modalities, as well as the weather condition. The proposed agent is able to predict takeover quality better than the baseline by 56.5% (baseline MSE : 0.0600, our agent MSE : 0.0261) and use different recommendations based on the situation. Modality impact on takeover quality was shown to have a mean score of 4.95% (standard deviation: 2.7%). Evaluation of the agent gain on takeover quality compared to standard takeover request design is currently ongoing.

Towards an emotionally augmented metaverse :
Conférence ArODES
a framework for recording and analysing physiological data and user behaviour

Leonardo Angellini, Massimo Mecella, Hai-Ning Liang, Danilo Bernardini, Omar Abou Khaled, Elena Mugellini, Maurizio Caon

Proceedings of the 13th Augmented Human International Conference

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Résumé:

Several big tech companies are currently eager of building the metaverse, mainly through virtual reality experiences. Albeit immersive, in shared virtual environments it might be difficult to have emotionally rich interactions. Indeed, current available headsets and VR applications have limited possibilities for tracking and sharing emotions. We believe that physiological signal technology could enhance future metaverse applications. In this context, this paper presents a framework for visualizing, recording and synchronizing experiences in VR with human body signals. In order to prove the effectiveness of the system, we illustrate a use case and the development of a proof-of-concept scenario. Finally, we present the results of the tests conducted on this proof-of-concept that demonstrate the validity of the proposed system. Such framework could be used to design new emotionally augmented experiences in VR.

Empathy scale adaptation for artificial agents :
Conférence ArODES
a review with a new subscale proposal

Harika Putta, Karl Daher, Mira El Kamali, Omar Abou Khaled, Denis Lalanne, Elena Mugellini

Proceedings of the 8th International Conference on Control, Decision and Information Technologies, CoDIT’22, 17-20 May 2022, Istanbul, Turkey

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Résumé:

The communication between humans and artificial agents is becoming crucial and significant in daily life, especially with the advancements in the fields of human-robot and human-computer interaction. For these artificial agents to be recognized as social beings, they should exhibit emotional and empathic behaviors. However, there is no global agreement on measuring the empathic capabilities of these agents. For this reason, the scientific community has paid a significant focus on developing a standardized metric to perceive artificial agents’empathy. In this regard, this article provides a discussion on challenges in artificial empathy evaluation and researches the developments to discuss the factors and recommendations to design a globally accepted metric. It also discusses the qualities required for a globally accepted and standardized metric. Finally, an adaptation to an existing questionnaire is proposed for the evaluation of empathy in artificial agents.

WeCheat :
Conférence ArODES
algorithm for e-learning smart cheating detection using mean-shift clustering

Jussein Hazimeh, Hasan Fayyad-Kazan, Hussin J. Hejase, Karl Daher, Elena Mugellini, Omar Abou Khaled

KES International Conference on Smart Education and E-Learning SEEL-22 2022: Smart Education and e-Learning - Smart Pedagogy, 20-22 June 2022, Rhodes, Greece

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Résumé:

During the COVID-19 pandemic, most people around the world started using internet and online technologies for multiple purposes. A very common digital transformation is online learning or e-learning. Despite its importance, online learning has several issues compared to standard learning. One of the most issues of concern is cheating between students during online exams. This paper aims to address cheating problem by proposing a novel method called WeCheat. It automates the cheating detection process on e-learning platforms, such as Google Forms. The target for the detection of cheating-groups are online exams. To the best of our knowledge, this is the first time someone proposes such a system that detects cheating, particularly during the COVID-19 pandemic. To comply with the set goal, a clustering-based solution is proposed. This Method employs MeanShift, a non-parametric and density-based clustering algorithm for this task. Validation of this approach is evidenced by the application which performs excellently on an arbitrary number of features in the cheating detection problem in terms of accuracy. This application helps educational institutions to address cheating cases and at the same time offers the opportunity to focus more on the use of anti-cheating logistics.

The effect of music and light-color as a machine empathic response on stress in occupational health
Conférence ArODES

Andrés Felipe Dorado, Karl Daher, Elena Mugellini, Denis Lalanne, Omar Abou Khaled

Proceedings of the 2022 8th International Conference on Control, Decision and Information Technologies (CoDIT), 17-20 May 2022, Istanbul, Turkey

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Résumé:

In a world where technological advancements are progressing at a vertiginous pace, social networks, online games, virtual worlds, streaming services, and remote work are part of everyday life. This is the case for the work environment, with the use of technological tools and home offices. In contrast, harmful aspects have been amplified, such as stress that affects occupational health. Lately, considerable interest has been gained in the affective domain in improving the occupational situation using empathic responses. In this work, we study the effect of machine empathic responses such as blue light, relaxing music, and the combination of light and music on people performing stressful tasks in an occupational environment. Thirty five participants tested different stimuli, eleven tested the music condition, twelve the light effect, and another twelve the combination of light and music. The monitoring of the heart rate variability along with psychological measures show that empathic responses can help reduce humans stress levels.

Comparaison de concepts d’interactions homme-véhicule pour soutenir le conducteur en conduite conditionnellement automatisée
Conférence ArODES

Marine Capallera, Jean Pierre Bresciani, Quentin Meteier, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

IHM ’22 : Proceedings of the 33rd Conference on l'Interaction Humain-Machine, 5-8 April 2022, Namur, Belgium

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Résumé:

Les actuelles assistances à la conduite modifient progressivement le rôle du conducteur. Pour certains niveaux d’automatisation, son rôle actif devient alors celui de superviseur. Ce changement peut entraîner une réduction de la compréhension de la situation mais également une charge cognitive plus élevée lors de la reprise de contrôle manuelle. C’est pourquoi il est important de concevoir des interactions permettant de soutenir le conducteur dans cette tâche. Cet article propose d’utiliser le siège du conducteur et une tablette pour transmettre des informations au conducteur relatives à son environnement pendant les phases de conduite autonome et ainsi l’accompagner dans sa tâche de supervision. Une première expérience a permis de valider l’utilisation de vibrations dans le siège pour transmettre des informations. Une seconde expérience compare ce concept avec l’envoi d’icônes pour transmettre ces mêmes informations. Les résultats montrent que l’utilisation de ces concepts a un impact sur la conscience de la situation.

Predicting takeover quality in conditionally autonomous vehicles based on takeover request modalities, driver physiological state and the environment
Conférence ArODES

Emmanuel de Salis, Quentin Meteier, Marine Capallera, Quentin Pelletier, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Marino Widmer, Stefano Carrino

Proceedings of the 5th International Conference on Intelligent Human Systems Integration (IHSI 2022) Integrating People and Intelligent Systems, Venice, Italy, 22-24 February 2022

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2021

Emotional paraphrasing using pre-trained language models
Conférence ArODES

Jacky Casas, Samuel Torche, Karl Daher, Elena Mugellini, Omar Abou Khaled

Proceedings of 2021 9th International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW), 28 September - 1 October 2021, Nara, Japan

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Résumé:

Emotion style transfer is a recent and challenging problem in Natural Language Processing (NLP). Transformer-based language models are becoming extremely powerful, so one wonders if it would be possible to leverage them to perform emotion style transfer. So far, previous work has not used transformer-based models for this task. To address this task, we fine-tune a GPT-2 model with corrupted emotional data. This will train the model to increase the emotional intensity of the input sentence. Coupled with a paraphrasing model, we develop a system capable of transferring an emotion into a paraphrase. We conducted a qualitative study with human judges, as well as a quantitative evaluation. Although the paraphrase metrics show poor performance compared to the state of the art, the transfer of emotion proved to be effective, especially for the emotions fear, sadness, and disgust. The perception of these emotions were improved both in the automatic and human evaluations. Such technology can significantly facilitate the automatic creation of training sentences for natural language understanding (NLU) systems, but it can also be integrated into an emotional or empathic dialogue architecture.

Bobby :
Conférence ArODES
un chatbot qui utilise la musique pour améliorer vos émotions

Cécile Grand, Karl Daher, Christelle Rossier, Elena Mugellini, Omar Abou Khaled

Proceedings of WACAI 2021 (Workshop sur les Affects, Compagnons Artificiels et Interactions), 13-15 Octobre 2021, Saint Pierre d’Oléron, France

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Résumé:

La musique utilisée en thérapie présente de nombreux avantages. En effet c’est une activité quotidienne qui ne nécessite aucune formation et a de nombreux impacts sur nos émotions. Elle peut les changer, les améliorer et les influencer. Un autre avantage en ce qui concerne l’accessibilité et le coût des séances thérapeutiques sont les chatbots proposant une thérapie. Récemment, les chatbots ont commencé non seulement à être utilisés en thérapie mais également à prouver leur efficacité. Sur ces bases, nous avons conçu Bobby, notre chatbot proposant de la musique pour améliorer les émotions. Le dialogue est basé sur le déroulement de la thérapie et suit donc les trois phases : exploration, insight et action. La structure de ce dialogue suit la logique d’un chatbot, proposant l’art thérapie, déjà créée : SERMO. Bobby pose des questions sur l’humeur, l’état émotionnel, la musique et enfin, passe à l’activité musicale. La musique proposée par le chatbot est tirée d’une base de données contenant des morceaux émotionnellement connotés et empiriquement validés. Les musiques sont proposées par rapport à l’état émotionnel de la personne et selon qu’elle souhaite le changer ou le renforcer. Quatorze participant-e-s ont testé le chatbot. Aucune analyse statistique n’est encore effectuée, mais les résultats préliminaires montrent un effet positif sur le groupe souhaitant renforcer son émotion ou état émotionnel. Bien qu’aucun effet n’ait été observé dans le groupe souhaitant changer leur émotion ou état émotionnel, dire que le chatbot n’est pas efficace n’est pas possible. En effet il faudra tester une plus grande population afin de pouvoir mener de réelles analyses statistiques et pouvoir tirer les conclusions des résultats obtenus.

Clustering of drivers’ state before takeover situations based on physiological features using unsupervised machine learning
Conférence ArODES

Emmanuel de Salis, Quentin Meteier, Colin Pelletier, Marine Capallera, Leonardo Angelini, Andreas Sonderegger, Omar Abou Khaled, Elena Mugellini, Marino Widmer, Stefano Carrino

International Conference on Human Interaction and Emerging Technologies ; Proceedings of IHIET 2021: Human Interaction, Emerging Technologies and Future Systems V, 28-30 October 2021, Reims, France

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Résumé:

Conditionally automated cars share the driving task with the driver. When the control switches from one to another, accidents can occur, especially when the car emits a takeover request (TOR) to warn the driver that they must take the control back immediately. The driver’s physiological state prior to the TOR may impact takeover performance and as such was extensively studied experimentally. However, little was done about using Machine Learning (ML) to cluster natural states of the driver. In this study, four unsupervised ML algorithms were trained and optimized using a dataset collected in a driving simulator. Their performances for generating clusters of physiological states prior to takeover were compared. Some algorithms provide interesting insights regarding the number of clusters, but most of the results were not statistically significant. As such, we advise researchers to focus on supervised ML using ground truth labels after experimental manipulation of drivers’ states.

Workshop for designing biofeedback of driver’s state and emotion in automated vehicles
Conférence ArODES

Marine Capallera, Quentin Meteier, Kevin Koch, Markus Funk, Mira El Kamali, Karl Daher, Omar Abou Khaled, Elena Mugellini

Proceedings of AutomotiveUI '21 Adjunct: 13th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, 9-14 September 2021, Leeds, United Kingdom

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Résumé:

Different drivers’ states and emotions can affect negatively the driving performance. Recent advances in affective computing now give the opportunity to measure the users’ state or emotions using various sources of data such as physiological signals or voice samples. Conveying biofeedback in the car could help to make roads safer and improve users’ health and mental state during a ride in an autonomous car. This workshop aims at selecting the drivers’ hazardous states and emotions that are crucial to be assessed, as well as how to convey the appropriate biofeedback to the driver, using multimodal interaction in the car.

Enhancing conversational agents with empathic abilities
Conférence ArODES

Jacky Casas, Timo Spring, Karl Daher, Elena Mugellini, Omar Abou Khaled, Philippe Cudré-Mauroux

Proceedings of IVA '21, the 21st ACM International Conference on Intelligent Virtual Agents, 14-17 September 2021, Virtual Event, Japan

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Résumé:

Conversational agents are getting increasingly popular and find applications in health and customer services. Conversations in these fields are often emotionally charged. It is, therefore, necessary to handle the conversation with some degree of empathy to be effective. In this work, we leverage advances in the field of natural language processing to create a dialogue system that can convincingly generate empathic responses to text-based messages. To improve the system's ability to converse with empathy, we train the language model on empathic conversations and inject additional emotional information in the response generation. We propose two chatbots: a benchmark bot and an empathic bot. Additionally, we implement an emotion classifier that allows us to predict the emotional state of text-based messages. We evaluate both chatbots in quantitative studies and compare them with human responses in qualitative studies involving human judges. Our evaluation shows that our empathic chatbot outperforms the benchmark bot and even the human-generated responses in terms of perceived empathy. Additionally, we achieve state-of-the-art results in terms of response quality using transformer-based language models. Finally we report that we can double the initial performance of the emotion classifier using undersampling techniques, yielding a final F1-score of 0.81 in six basic emotions.

S’entraîner à l’asepsie avec la réalité virtuelle
Conférence ArODES

Leonardo Angelini, Alexandre Favre, François Magnin, Mariateresa De Vito Woods, Omar Abou Khaled, Elena Mugellini

10e Conférence sur les environnements Informatiques pour l’apprentissage humain (EIAH), 7-10 juin 2021, Fribourg, Suisse

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Résumé:

Dans une collaboration interdisciplinaire entre une Haute École d’Ingénierie et une Haute École de Santé, nous avons développé une plateforme de réalité virtuelle pour l’entraînement à l’asepsie dans un contexte de soins. La première application développée réplique soigneusement un scénario de prise de sang. La plateforme permet de visualiser les erreurs d’asepsie et les risques de contamination pendant l’exécution des gestes. Un système de points permet de ludifier l’entraînement et de comparer les scores des étudiants. Nous avons mené des tests préliminaires avec 9 étudiants avec un casque de réalité virtuelle Oculus Quest 2. Lors du test, nous avons comparé différentes modalités d’interaction (manettes ou suivi des mains) et différents degrés d’immersion (téléportation dans un environnement complètement virtuel, ou mappage d’une vraie salle de simulation, avec possibilité de toucher des éléments physiques). Ces expériences nous ont permis de tirer un bilan sur le niveau d’immersion atteint par les nouvelles technologies de réalité virtuelle et sur leur implication possible dans la formation pratique des étudiants.

Inclusion design and functionalities of a personalized virtual coach for wellbeing to facilitate a universal access for older adults
Conférence ArODES

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Francesco Carrino, Carlo Emilio Standoli, Paolo Perego, Giuseppe Andreoni, Filippo Palumbo, Alfonso Mastropietro, Omar Abou Khaled, Elena Mugellini

Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021)

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Résumé:

The current research proposes a technological system "NESTORE" designed for and with older adults in four different countries in order to improve and sustain their wellbeing. The system personalized activities and architecture, co-designed interfaces, and its multilingual aspect aim to establish an ‘inclusion’ criterion based on the user’s sociocultural profile and health condition.

A study on the acceptance towards blockchain-based access to biobanks’ services using UTAUT2 with ITM and perceived risk
Conférence ArODES

Francesco Carrino, Omar Abou Khaled, Elena Mugellini, Maurizio Caon

Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021)

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Résumé:

The blockchain technology offers reliability, decentralization, security and credibility. Blockchain solutions can be based on smart contracts and on the use of utility tokens which may represent a utility of a company like limited fashion items, cars, car parts or even human biological samples stored in biobanks. However, decentralization comes with responsibilities: people must take care of storing those tokens in a safe place (commonly denominated as “wallets”) knowing that losing a wallet or wallet key means losing the owned tokens. This concept is still new to people and might sound scary. The success of such services relies on the extent of customers intending to adopt them and very few studies target this intention. The current research proposes a model combining of the unified theory of acceptance and usage of technology (UTAUT2) with the initial trust model (ITM) and the perceived risk construct in order to evaluate the factors affecting the behaviour and use intention of people towards a blockchain technology that enables access to biobank services. An online questionnaire was built and sent to swiss university students. The 72 results showed that simplifying the access to blockchain-based technologies will facilitate inclusion, enabling people with lower digital literacy to access these technologies.

Seniors’ perception of smart speakers: challenges and opportunities elicited in the Silver&Home Living Lab
Conférence ArODES

Leonardo Angelini, Maurizio Caon, Emmanuel Michielan, Omar Abou Khaled, Elena Mugellini

Proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021)

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Résumé:

As the European population is getting older, there is an increasing need in maintaining older adults living independently at home. Vocal assistants may offer various services that can be beneficial for senior citizens. In the context of the Silver&Home living lab, we tested the Google Home Smart speaker connected to smart lighting installation with 7 people to understand the strengths, weaknesses and possible usage for improving the quality of life of older adults. The test and the questions asked to participants were framed according to the Unified Theory on Acceptance and Use of Technology (UTAUT2). Participants generally appreciated the interaction with the smart speaker, although they also identified some barriers, such as the “OK Google” wakeword or the assistant speaking too fast for some answers. Finally, they considered it particularly adapted to people living alone.

Empathic interactions in automated vehicles #EmpathicCHI
Conférence ArODES

Karl Daher, Marine Capallera, Chiara Lucifora, Jacky Casas, Quentin Meteier, Mira El Kamali, Abdallah El Ali, Giorgio Mario Grosso, Omar Abou Khaled, Elena Mugellini

Proceedings of CHI EA '21: Extended Abstracts of the 2021 CHI Conference on Human Factors in Computing Systems, 8-13 May 2021, Yokohama, Japan

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Résumé:

Automation in driving will change the role of the drivers from actor to passive supervisor. Although the vehicle will be responsible for driving manoeuvres, drivers will need to rely on automation and understand its decisions to establish a trusting relationship between them and the vehicle. Progress has been made in conversational agents and affective machines recently. Moreover, it seems to be promising in this establishment of trust between humans and machines. We believe it is essential to investigate the use of emotional conversational agents in the automotive context to build a solid relationship between the driver and the vehicle. In this workshop, we aim at gathering researchers and industry practitioners from different fields of HCI, ML/AI, NLU and psychology to brainstorm about affective machines, empathy and conversational agent with a particular focus on human-vehicle interaction. Questions like ”What would be the specificities of a multimodal and empathic agent in a car?”, ”How the agent could make the driver aware of the situation?” and ”How to measure the trust between the user and the autonomous vehicle?” will be addressed in this workshop.

Country localisation of Twitter users
Conférence ArODES

Jacky Casas, Silas Berger, Omar Abou Khaled, Elena Mugellini, Denis Lalanne

Proceedings of 2021 12th International Conference on Information and Communication Systems (ICICS), 24-26 May 2021, Valencia, Spain

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Résumé:

Localising Twitter users when trying to analyse local trends, events, or mood is a useful capability. However, there is still no method able to reach high precision and recall. Research projects attempting to localise Twitter users to a precise radius (e.g., 10km) managed to localise at most 60% of users correctly. In this paper, we propose a way to classify them by the country they are located in, instead of finding a precise localisation. We apply our technique to Switzerland and locate the users to inside or outside of the country. Among different features, we used relations of users to a list of "Swiss Influencers" accounts - that is, accounts which are mostly of interest to Swiss people. A full classification pipeline was implemented and tested. We have found that our best classification models achieved an accuracy of 95%, with a maximum precision of 98%, and a maximum recall of 91%. This goes to show that our binary classification problem, while potentially not being specific enough for certain types of applications, can amount to significantly more reliable results.

Natural Language Understanding (NLU) on the Edge
Conférence ArODES

Nicolas Crausaz, Jacky Casas, Karl Daher, Omar Abou Khaled, Elena Mugellini

Advances in Intelligent Systems and Computing ; Proceedings of the International Conference on Human Interaction and Emerging Technologies IHIET-AI 2021: Human Interaction, Emerging Technologies and Future Applications IV, 28-30 April 2021, Strasbourg, France

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Résumé:

Today, chatbots have evolved to include artificial intelligence and machine learning, such as Natural Language Understanding (NLU). NLU models are trained and run on remote servers because the resource requirements are large and must be scalable. However, people are increasingly concerned about protecting their data. To be efficient, the current NLU models use the latest technologies, which are increasingly large and resource-intensive. These models must therefore run on powerful servers to function. The solution would therefore be to perform the inference part of the NLU model directly on edge, on the client’s browser. We used a pre-trained TensorFlow.js model, which allows us to embed this model in the client’s browser and run the NLU. The model achieved an accuracy of more than 80%. The primary outcomes of NLU on edge show an effective and possible foundation for further development.

Virtual reality to improve human computer interaction for art
Conférence ArODES

Fayez Chris Lteif, Karl Daher, Leonardo Angelini, Elena Mugellini, Omar Abou Khaled, Hayssam El Hajj

Advances in Intelligent Systems and Computing ; Proceedings of International Conference on Human Interaction and Emerging Technologies IHIET-AI 2021: Human Interaction, Emerging Technologies and Future Applications IV, 28-30 April 2021, Strasbourg, France

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Résumé:

The integration of technology, namely virtual reality, with arts is implemented in this paper. An observational study is performed by replicating an actual museum by a Swiss-Lebanese artist and having user experience it in a virtual immersive environment. Data is then collected to monitor the user experience and its effects on his emotional and psychological state. This information is used to reflect on future developments and enhancements to elevate the user experience and potentially upgrade it with further advanced technologies.

Cyber-therapy :
Conférence ArODES
the use of artificial intelligence in psychological practice

Chiara Lucifora, Leonardo Angelini, Quentin Meteier, Carmelo M. Vicario, Omar Abou Khaled, Elena Mugellini, Giorgio M. Grasso

Advances in Intelligent Systems and Computing ; Proceedings of International Conference on Intelligent Human Systems Integration IHSI 2021: Intelligent Human Systems Integration 2021, 22-24 February 2021, Palermo, Italy

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Résumé:

Cyber Therapy is a research project based on the relationship between Computer Science and Psychology. We are working on post-traumatic stress disorder (PTSD) due to severe traffic accidents using a virtual reality driving simulator and ECG, EDA and breathing sensors. With the help of virtual reality (VR) our goal is to build one software that can process the user’s biofeedback signals - heart rate, body temperature, state of tension, etc. - in real time, to make the phobic stimulus autonomous. To this purpose, we developed a platform capable of adapting the phobic stimulus based on the user’s biofeedback signals. We believe that this human-computer integrated system could be useful to patients as it would allow them to face fear autonomously, and to the psychotherapist, as it would allow a real time - physiologically based - knowledge of fear symptoms severity able to promote a timely and more appropriate program of intervention.

Predicting takeover quality in conditionally automated vehicles using machine learning and genetic algorithms
Conférence ArODES

Emmanuel de Salis, Quentin Meteier, Marine Capallera, Leonardo Angelini, Andreas Sonderegger, Omar Abou Khaled, Elena Mugellini, Marino Widmer, Stefano Carrino

Advances in Intelligent Systems and Computing ; Proceedings of International Conference on Intelligent Human Systems Integration IHSI 2021: Intelligent Human Systems Integration 2021, 22-24 February 2021, Palermo, Italy

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Résumé:

Takeover requests in conditionally automated vehicles are a critical point in time that can lead to accidents, and as such should be transmitted with care. Currently, several studies have shown the impact of using different modalities for different psychophysiological states, but no model exists to predict the takeover quality depending on the psychophysiological state of the driver and takeover request modalities. In this paper, we propose a machine learning model able to predict the maximum steering wheel angle and the reaction time of the driver, two takeover quality metrics. Our model is able to achieve a gain of 42.26% on the reaction time and 8.92% on the maximum steering wheel angle compared to our baseline. This was achieved using up to 150 s of psychophysiological data prior to the takeover. Impacts of using such a model to choose takeover modalities instead of using standard takeover requests should be investigated.

2020

NESTORE :
Conférence ArODES
an embodied tangible conversational agent for older adults

Mira El Kamali, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Proceedings of ETIS 2020 : Fourth European Tangible Interaction Studio 2020, 16-20 November 2020, Siena, Italy

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Résumé:

Older adults are increasing in Europe [2]. Technology may play a role in older adults' health. Giving technology the ability to be physically manipulated can result in creating trust [4]. According to Spreicer [8], co-designing tangible user interface with elderly people can increase the chance of technology acceptance. NESTORE [6] is a virtual coach that comes in different forms of modalities/interfaces: a chatbot, a mobile application and a tangible coach. This article focuses on presenting one of the interfaces of NESTORE: the “tangible coach”. The tangible coach is an embodied conversational agent that seeks to empower older adults in becoming the co-producers of their wellbeing lifestyle through its tangible and its vocal interaction.

Bombuscar :
Conférence ArODES
gamification design of a carpolling-based freight transport

Francesco Carrino, Quentin Vaucher, Richard Pasquier, Vincent Bourquin, Omar Abou Khaled, Elena Mugellini, Stéphane Gobron

Proceedings of GSGS'20 : 5th Gamification & Serious Game Symposium, September-November 2020, Switzerland

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Résumé:

The environmental and societal cost of traditional logistics, based on the "Hub and spoke" model, is increasingly unfavorable. Digitization allows new approaches that have proved effective in people transportation (e.g., Uber, BlaBlaCar). This project proposes the creation of a smart distribution network for the goods transport by exploiting existing transport capabilities. We present the gamification design of the user interface (UI) to foster users’ motivation and trust to the platform.

Embodied conversational agent for emotional recognition training
Conférence ArODES

Karl Daher, Zeno Bardelli, Jacky Casas, Elena Mugellini, Omar Abou Khaled, Denis Lalanne

Proceedings of ThinkMind, ACHI 2020 : The Thirteenth International Conference on Advances in Computer-Human Interactions, 21-25 November 2020, Valencia, Spain

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Résumé:

Avatars were known in the world of video games, where heroes with specific characters, attributes and powers are assigned to players. However, avatars are evolving and reaching domains like companions, assistants and tutors. These avatars now use speech, facial expression, body language or text to interact with humans. When we say interaction, we say emotional expression and empathy. Avatars are still short in the emotional and empathic world; it cannot express nor share emotions. In this paper, we research the emotional avatar world, and we present the Anthropomorphic Chatbot for Emotion Recognition (ACER), an empathic friend companion designed for children. The goal of ACER is to teach children about emotions by expressing it through facial expressions and body language while texting through a chat. An experiment was held to test the avatar effect. Qualitative and quantitative results show users positive emotions tending towards having a chat with ACER with facial and body expressions instead of only ACERs chatbot.

Human vehicle interaction model for supervision in conditionally automated driving cars
Conférence ArODES

Marine Capallera, Omar Abou Khaled, Leonardo Angelini, Elena Mugellini

Proceedings of ETIS 2020 : the Fourth European Tangible Interaction Studio, 16-20 November 2020, Siena, Italy

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Résumé:

Developments in the field of semi-autonomous driving will increasingly free the driver from the main driving task. Conditional autonomous driving allows the driver not to constantly monitor her/his environment, but s/he must still be able to regain control of the vehicle at any time if the situation requires it. That’s why it is important to maintain driver’s Situation Awareness while is performing a secondary task. This paper presents a model of an adaptive, full-body and multimodal Human Vehicle Interaction (HVI) for supervision.

Inside the cockpit of semi-autonomous cars of tomorrow :
Conférence ArODES
gamification design of a carpolling-based freight transport

Quentin Meteier, Marine Capallera, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Jean-Pierre Bresciani, Andreas Sonderegger, Stefano Carrino

Proceedings of GSGS'20 : 5th Gamification & Serious Game Symposium, September-November 2020, Switzerland

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Résumé:

Simulations play a crucial role to investigate hazardous situations that are impossible to test in real-life conditions without endangering the user’s safety. This paper presents a simulator of conditionally automated cars aiming at enhancing the driver safety and driving comfort. In addition, thanks to the simulator’s highly repeatability, integrated sensors and controlled conditions we collected valuable scientific data, which is otherwise very difficult to gather.

First Workshop on Multimodal e-Coaches
Conférence ArODES

Leonardo Angelini, Mira El Kamali, Elena Mugellini, Omar Abou Khaled, Yordan Dimitrov, Vera Veleva, Zlatka Gospodinova, Nadejda Miteva, Richar Wheeler, Panagiotis Bamidis, Evdokimos Konstantinidis, Despoina Petsani, Andoni Beristain Iraola, Gérard Chollet, Inés Torres, Zoraida Callejas, David Griol, Kawtar Benghazi, Manuel Noguera, Dimitrios I. Fotiadis

Proceedings of ICMI '20: Proceedings of the 2020 International Conference on Multimodal Interaction, 25-29 October 2020, The Netherlands

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Résumé:

T e-Coaches are promising intelligent systems that aims at supporting human everyday life, dispatching advices through different interfaces, such as apps, conversational interfaces and augmented reality interfaces. This workshop aims at exploring how e-coaches might benefit from spatially and time-multiplexed interfaces and from different communication modalities (e.g., text, visual, audio, etc.) according to the context of the interaction.

Empathic chatbot response for medical assistance
Conférence ArODES

Karl Daher, Jacky Casas, Omar Abou Khaled, Elena Mugellini

Proceedings of the 20th ACM International Conference on Intelligent Virtual Agents (IVA'20), 19-23 October 2020, Glasgow, UK

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Résumé:

Is it helpful for a medical physical health chatbot to show empathy? How can a chatbot show empathy only based on short-term text conversations? We have investigated these questions by building two different medical assistant chatbots with the goal of providing a diagnosis for physical health problem to the user based on a short conversation. One chatbot was advice-only and asked only the necessary questions for the diagnosis without responding to the user's emotions. Another chatbot, capable of showing empathy, responded in a more supportive manner by analyzing the user's emotions and generating appropriate responses with a high empathic accuracy. Using the RoPE scale questionnaire for empathy perception in a human-robot interaction, our empathic chatbot was rated significantly better in showing empathy and was preferred by a majority of the preliminary study participants (N=12).

Trends and methods in chatbot evaluation
Conférence ArODES

Jacky Casas, Marc-Olivier Tricot, Omar Abou Khaled, Elena Mugellini, Philippe Cudré-Mauroux

Proceedings of ICMI 2020 : 22nd ACM International Conference on Multimodal Interaction, 25-29 October 2020, Utrecht, the Netherlands

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Résumé:

Chatbots are computer programs aiming to replicate human conversational abilities through voice exchanges, textual dialogues, or both. They are becoming increasingly pervasive in many domains like customer support, e-coaching or entertainment. Yet, there is no standardised way of measuring the quality of such virtual agents. Instead, multiple individuals and groups have established their own standards either specifically for their chatbot project or have taken some inspiration from other groups. In this paper, we make a review of current techniques and trends in chatbot evaluation. We examine chatbot evaluation methodologies and assess them according to the ISO 9214 concepts of usability: Effectiveness, Efficiency and Satisfaction. We then analyse the methods used in the literature from 2016 to 2020 and compare their results. We identify a clear trend towards evaluating the efficiency of chatbots in many recent papers, which we link to the growing popularity of task-based chatbots that are currently being deployed in many business contexts.

Multimodal conversational agent for older adults' behavioral change
Conférence ArODES

Mira El Kamali, Leonardo Angelini, Denis Lalanne, Omar Abou Khaled, Elena Mugellini

Proceedings of ICMI '20 Companion : International Conference on Multimodal Interaction, 25-29 October 2020, Virtual event, Netherlands

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Résumé:

Recently, research in the multimodal interaction area has shown a rapid development and users have been embracing their experience of multimodal technologies. In fact, having a multimodal system means allowing the user to choose one or more communication channel to access the system. While, on the contrary, unimodal systems do not have this option and can only settle to one-way of communication. Particularly, conversational agents are also in rapid increment and older adults are becoming more and more exposed to such agents. NESTORE is a virtual coach that aims to follow older adults in their wellbeing journey. It comes in two forms of interfaces: (i) a chatbot which is a text-based messaging application and (ii) a tangible coach which is a vocal assistant. This virtual coach is multimodal, due to the fact that it can depict or send information and even receive the user’s input through two different interfaces which are the chatbot and the tangible coach. Our aim is then to explore the modality that the user prefers in terms of user experience. We experimented with older adults five different types of scenarios where the virtual coach was interacting with a user through different modalities, used individually or combined. The virtual coach was asking a set of questions derived from a behavioral change model called HAPA. We measured the perceived user experience for each scenario with the UEQ-S questionnaire, and asked to rank the scenarios according to the users’ preferences.

Overview of the Transformer-based Models for NLP Tasks
Conférence ArODES

Anthony Gillioz, Jacky Casas, Elena Mugellini, Omar Abou Khaled

Proceedings of the 2020 Federated Conference on Computer Science and Information Systems, 6-9 September 2020, Sofia, Bulgaria ; Annals of Computer Sciences and Information Sciences

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Résumé:

In 2017, Vaswani et al. proposed a new neural network architecture named Transformer. That modern architecture quickly revolutionized the natural language processing world. Models like GPT and BERT relying on this Transformer architecture have fully outperformed the previous state-of-the-art networks. It surpassed the earlier approaches by such a wide margin that all the recent cutting edge models seem to rely on these Transformer-based architectures. In this paper, we provide an overview and explanations of the latest models. We cover the auto-regressive models such as GPT, GPT-2 and XLNET, as well as the auto-encoder architecture such as BERT and a lot of post-BERT models like RoBERTa, ALBERT, ERNIE 1.0/2.0.

NESTORE :
Conférence ArODES
un compagnon multimodal pour les séniors

Mira El Kamali, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Publié dans les actes de la conférence WACAI 2020, Workshop sur les affects, compagnons artificiels et interactions, 2-4 juin 2021, Île d'Oléron

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Résumé:

Dans le cadre du projet Européen NESTORE, nous envisageons de créer un coach virtuel pour le bien-être des seniors. Ce dernier est un agent conversationnel qui peut avoir une conversation utilisant le langage naturel avec l'utilisateur afin de coacher, de se lier d'amitié et d'accompagner les seniors tout au long de leur parcours. Cet agent conversationnel se décline sous différentes formes d'interfaces telles qu’une application de messagerie textuelle ou un assistant vocal intégré. Cet agent conversationnel multimodal cherche à construire une relation empathique avec les utilisateurs basée sur son omniprésence, son attitude de coaching, sa fidélité et enfin sa capacité de comprendre l'émotion de l'utilisateur. Dans cet article, nous présentons la conception de ce coach virtuel, son but, ses rôles, l’architecture du système, ses capacités et ses multiinterfaces.

Reduce stress through empathic machine to improve HCI
Conférence ArODES

Karl Daher, Mathias Fuchs, Elena Mugellini, Denis Lalanne, Omar Abou Khaled

Advances in Intelligent Systems and Computing ; Proceedings of Human Interaction, Emerging Technologies and Future Applications II (IHIET 2020), 23-25 April, Lausanne, Switzerland

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Résumé:

Daily life problems, can lead to distress, which has a harmful effect on health. Individuals are using machines for longer period. Machines should now have the ability to understand and show empathy which relies on trying to help the other through their emotional situation. In this study, showing empathy is done by reducing the effect of negative stress by using blue light. In the experiment, 17 participants executed a computer-mediated stress-generating test while using an Empatica E4 to extract physiological signals. The test is done without and with additional blue-colored light. The results show that a simple addition of blue colored light has the tendency to reduce mental stress. That can be interpreted as, compared to the normal state, the experiment with no light-induced more stress than the experiment with the blue light in the humans. Which imply that the blue light helped in maintaining a lower level of stress.

Comparing the ergonomics of gestural interfaces while running on a treadmill
Conférence ArODES

Matthieu Vallat, Alessandro Silacci, Omar Abou Khaled, Elena Mugellini, Giuseppe Fedele, Maurizio Caon

Advances in physical, social & occupational ergonomics : Proceedings of the AHFE 2020 Virtual Conferences on Physical Ergonomics and Human Factors, Social & Occupational Ergonomics and Cross-Cultural Decision Making, July 16–20, 2020, USA

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Résumé:

Interactions with treadmills are based on pressing buttons or through a touchscreen. However, these interactions require the user to touch the frontal dashboard of the treadmill while running. Indeed, for each interaction that the runner does, the user needs to break her/his running form to reach the interface. Those actions cost also some additional energy to the runner with a possible impact on performance. Current technologies allow finding a better solution for the runner like gesture-based interaction. This paper presents a comparison of different interaction modalities, including gestures, on a treadmill. The goal of this study is to analyze the ergonomics of gestural interfaces while running on a treadmill. In fact, specific tailored gestures are perceived as more natural and easier to perform while doing an activity and can improve significantly the user experience.

An embodied and ubiquitous e-coach for accompanying older adults towards a better lifestyle
Conférence ArODES

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Denis Lalanne, Omar Abou Khaled, Elena Mugellini

Human-computer Interaction : human values and quality of life : thematic area, HCI 2020, held as part of the 22nd International Conference, HCII 2020, Copenhagen, Denmark, July 19–24, 2020, proceedings, part III

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Résumé:

The population of people age 65 or over is increasing especially inEurope [3]. Granting to this target population a longer and healthier life isparamount for the European Community. In the context of the H2020 EUfunded project“NESTORE”[11], an embodied and ubiquitous e-coach is beingdeveloped seeking to change the lifestyle of seniors in different domains ofwellbeing. NESTORE e-coach is known as a personalized embodied andubiquitous e-coach that plays three essential roles in elderly’s wellbeing: acoach, a friend and a companion. As a coach, NESTORE will give trainings andadvice following a wellbeing path that is proposed by experts in wellbeing. As afriend, this e-coach knows and understands the user. As a companion, this e-coach has the ability to detect the user’s emotion and aims at building empathywith the user based by providing support throughout their daily training.The NESTORE e-coach is based on three different intervention medium: amobile application, a chatbot and an embodied vocal assistant. These interfaceshave different forms, different capabilities and different visions. Users cancommunicate with the NESTORE e-coach through different interfaces exclu-sively, sequentially, concurrently and synergistically. The interaction can beinitiated from the user side to different interfaces and/or from the e-coach side.In this paper, we present the NESTORE’s full vision for building the threeessential roles of this e-coach which are: a coach, a companion and a friend forseniors. Furthermore, we explain the NESTORE system design, architecture,capabilities and how the different interfaces of this E-coach contribute to make amulti-modal system. Finally, we conclude our work with the state of this H2020project.

NESTORE
Conférence ArODES

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Omar Abou Khaled, Elena Mugellini, Nick Dulack, Paul Chamberlin, Claire Craig, Giuseppe Andreoni

Proceedings of the 2nd Conference on Conversational User Interfaces (CUI'20), 9-10 July, Bilbao, Spain

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Résumé:

Conversational agents are becoming widespread thanks to the development of natural language processing and deep learning techniques. NESTORE is a virtual coach designed to support seniors during their journey to wellbeing. This virtual coach interacts with the user through two different type of conversational agents: a text-based chatbot integrated in a mobile application and a tangible coach, which is a physical object based on vocal interaction and tangible interaction. This paper presents the design of each conversational agent interface developed to support seniors in enhancing their wellbeing. A cloud conversational agent manages the user interaction with the NESTORE virtual coach, which can occur through interfaces with different design, forms and capabilities, i.e., the chatbot and the tangible coach: two different intelligent interfaces with a shared mind.

Training pedestrian safety skills in youth with intellectual disabilities using fully immersive virtual reality :
Conférence ArODES
a feasibility study

Robin Cherix, Francesco Carrino, Geneviève Piérart, Omar Abou Khaled, Elena Mugellini, Dominique Wunderle

Lecture Notes in Computer Science ; Proceedings of HCII 2020, HCI in Mobility, Transport, and Automotive Systems. Driving Behavior, Urban and Smart Mobility, Second International Conference, Held as Part of the 22nd HCI International Conference, 19-24 July 2020, Copenhagen, Denmark

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Résumé:

The possibility to move independently outdoor has a huge impact on the quality of life. However, it requires complex skills, difficult to acquire for youth with intellectual disabilities (ID). They need an engaging and varied environment in which they can safely train these skills for all the time they may need. We present an exploratory study that aims to evaluate the usability of virtual reality (immersive headset) as learning tool for youth with ID. We developed a simulator of a pedestrian crossing able to reproduce different environmental conditions (i.e., weather, day-time/night-time, and drivers’ kindness). We tested our simulator with 15 people (9–18 years old) with ID. The tests showed good acceptability and a learning effect was visible after only four consecutive sessions, for a total of sixteen simulated crossings. However, additional studies are required (i) to assess in which measure this effect is imputable to actually learned crossing road skills or to a better control over the tool, (ii) to measure the transfer of the learning from virtual reality to real word conditions.

Designing an AI-companion to support the driver in highly autonomous cars
Conférence ArODES

Marine Capallera, Quentin Meteier, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Marino Widmer, Stefano Carrino

Proceedings of HCII 2020 : 22nd International Conference on Human-Computer Interaction, 19-24 July 2020, Copenhagen, Denmark ; Lecture Notes in Computer Science

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Résumé:

In this paper, we propose a model for an AI-Companion for conditionally automated cars, able to maintain awareness of the driver regarding the environment but also to able design take-over requests (TOR) on the fly, with the goal of better support the driver in case of a disengagement. Our AI-Companion would interact with the driver in two ways: first, it could provide feedback to the driver in order to raise the driver Situation Awareness (SA), prevent them to get out of the supervision loop and so, improve takeover during critical situations by decreasing their cognitive workload. Second, in the case of TOR with a smart choice of modalities for convey the request to the driver. In particular, the AI-Companion can interact with the driver using many modalities, such as visual messages (warning lights, images, text, etc.), auditory signals (sound, speech, etc.) and haptic technologies (vibrations in different parts of the seat: back, headrest, etc.). The ultimate goal of the proposed approach is to design smart HMIs in semi-autonomous vehicles that are able to understand 1) the user state and fitness to drive, 2) the current external situation (vehicle status and behavior) in order to minimize the automation surprise and maximizing safety and trust, and 3) leverage AI to provide adaptive TOR and useful feedback to the driver.

Plateforme d'extraction et d'analyse de conversation
Conférence ArODES

Jacky Casas, Elena Mugellini, Omar Abou Khaled

Actes de la conférence Wacai 2020, 2-4 juin 2020, île d'Oléron, France

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Résumé:

Dans le cadre d’une étude visant à développer un agent conversationnel empathique, une plateforme a été développée afin de collecter et analyser des conversations de personnes depuis plusieurs applications de messagerie couramment utilisées. Cet article donne un aperçu de la conception et du développement de cette plateforme web qui va être testée prochainement avec de vrais utilisateurs.

Empathic flower companion to increase productivity - EFC
Conférence ArODES

Karl Daher, Zeno Bardelli, Matteo Badaracco, Elena Mugellini, Denis Lalanne, Omar Abou Khaled

Proceedings of the CODIT 2020 : 7th International Conference on control, decision and information technologies, 29 June - 2 July, 2020, Prague, Czech republic

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Résumé:

Humans nowadays are tending to spend too much time in front of their screens. Direct interaction between humans is falling in numbers and people are losing their empathic behaviour. By integrating empathy and emotions in everyday objects researchers can address this problem. In addition we can have a positive effect on our lives, from physical and mental health through tackling many issues, like productivity, time wasting, stress and other problems. In this article, we tackle the productivity problem by presenting the Empathic Flower Companion (EFC) that will be using the expression of emotions to help the human through their working day. It will be monitoring their time and at the same time analysing the websites they will be surfing. The concept proposed will reduce the time wasted on unproductive websites. The results show an increase of 15% in the productivity of the testers, which shows that EFC was effective in reducing the amount of time wasted.

Early detection of foodborne illnesses in social media
Conférence ArODES

Jacky Casas, Elena Mugellini, Omar Abou Khaled

Proceedings of the 2nd International Conference on Human Interaction and Emerging Technologies: Future Applications (IHIET – AI 2020), 23-25 April 2020, Lausanne, Switzerland ; Advances in Intelligent Systems and Computing

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Résumé:

Alert Center is a platform aiming at detecting outbreaks caused by food toxin infections and food intoxications in Switzerland. It does this by analyzing tweets and sending alerts to the Federal Food Safety and Veterinary Office (FSVO) when a risk is detected. The platform is composed of four main parts: a real-time extractor that targets tweets based on a list of curated keywords, three classifiers (one for each main spoken language) that isolate tweets related to food toxin, a system that locates tweets on the Swiss territory and a web-based dashboard to visualize the results. Combining localization algorithms of tweets and users allows the system to locate 75.09% of the tweets, 2.31% of which were located in Switerzland. In addition, a list of Swiss Twitter accounts corresponding to 15% of the total estimated number of Swiss accounts has been created.

Personage VR :
Conférence ArODES
a virtual reality story-telling tool to raise awareness about ageism

Francesco Carrino, Valentin Moullet, Omar Abou Khaled, Elena Mugellini, Christian Maggiori

Advances in Intelligent Systems and Computing ; Proceedings of IHIET 2020 : 2nd International Conference on Human Interaction Emerging Technologies: Future Applications, 23-25 April 2020, Lausanne, Switzerland

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Résumé:

The PersonAge VR project has the two-folded goal of using Virtual Reality (VR) and interactive storytelling to divulge the research and knowledge in the field of ageism and, in the process, to raise awareness about ageism in the population. The system we conceived and developed allows experiencing ageism under three different points of view: the victim, the perpetrator, and the witness. We performed preliminary usability tests (formative usability) with 8 participants from the point of view of the victim. The system was found to be easy to use and the participants provided feedback about the emotions felt when playing the role of an elderly person. The participants felt strong anger and surprise. These feelings could be associated with a situation of discrimination.

Enriching the user experience of a connected car with quantified self
Conférence ArODES

Maurizio Caon, Marc Demierre, Omar Abou Khaled, Elena Mugellini, Pierre Delaigue

Proceedings of the 3rd International Conference on Intelligent Human Systems Integration (IHSI 2020)

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Résumé:

This paper presents the R’SENS project, the design for a system leveraging the Internet of Things to connect the dots between the user, her car and her environment through the integration of tools belonging to different domains, such as the connected car, the quantified self and web services. The aim of this study is to test a concept through a prototype to explore the possibility of enhancing the user experience of a connected car through the opportune and ubiquitous display of relevant information not only about the car status and the environment, but also the physical status of the driver. The integration of three different user interfaces (i.e., wearable, smartphone and infotainment system) to be used in different moments played a crucial role in the preliminary evaluation of the perceived usefulness and usability of this proof-of-concept.

2019

Conserver la conscience de l'environnement en conduite semi-automatique grâce à un siège haptique
Conférence ArODES

Marine Capallera, Peïo Barbé-Labarthe, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Actes de la 31e conférence francophone sur l'interaction homme-machine (IHM 2019), 10-13 décembre 2019, Grenoble, France

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Résumé:

La conduite semi-autonome évolue rapidement et l’une de ses principales problématiques est la réduction de l’attention du conducteur vis-à-vis de son environnement. Après une brève étude des interactions actuelles augmentant cette conscience de la situation, et plus particulièrement des interactions haptiques, cet article propose l’utilisation de vibrations dans le siège. Les vibrations, de par leur localisation et variations en fréquence et amplitude, permettent de transmettre différentes informations au conducteur comme la position d’obstacles autour de son véhicule ainsi que l’état de dégradation du marquage au sol. Les résultats de premiers tests exploratoires sont prometteurs sur l’utilisation d’interactions haptiques. Ils permettent de mettre en place le design et la procédure des futures expériences

Favoriser l'apprentissage de la traversée d'un passage piéton pour des jeunes avec une déficience intellectuelle grâce à la réalité virtuelle :
Conférence ArODES
étude de faisabilité

Robin Cherix, Francesco Carrino, Geneviève Piérart, Omar Abou Khaled, Elena Mugellini, Dominique Wunderle

Actes de la 31e conférence francophone sur l'interaction homme-machine (IHM 2019), 10-13 décembre 2019, Grenoble, France

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Résumé:

La réalité virtuelle (VR) a trois avantages : simuler en toute sécurité, proposer différentes conditions pour une action identique et rejouer un scénario de manière contrôlée. Nous présentons une étude de faisabilité concernant l’utilisation de la VR (casques immersifs) pour accompagner dans l’apprentissage de nouvelles compétences des jeunes adultes (10-18) avec une déficience intellectuelle (DI). Nous nous focalisons sur le scénario d’un passage piéton, en considérant plusieurs conditions environnementales (jour/nuit, gentillesse des conducteurs, etc.). Notre étude ne se limite pas aux jeunes avec trouble du spectre de l’autisme mais prend en compte les 10-18 ans ayant une DI avec un trouble associé. 15 jeunes ont participé à l’étude en montrant une bonne acceptabilité du casque immersif et un effet d’apprentissage déjà après une courte session d’entrainement. Une étude plus étendue et de longue durée est nécessaire pour évaluer le transfert de l’apprentissage dans la réalité.

Tâche secondaire et conscience de l'environnement :
Conférence ArODES
une application mobile pour véhicule semi-autonome

Marine Capallera, Leonardo Angelini, Quentin Meteier, Stefano Carrino, Emmanuel de Salis, Omar Abou Khaled, Elena Mugellini

Actes de la 31e conférence francophone sur l'interaction homme-machine (IHM 2019), 10-13 décembre 2019, Grenoble, France

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Résumé:

Les véhicules autonomes se développent rapidement et entraîneront un changement de rôle important chez le conducteur: ce dernier sera amené à passer du rôle d'acteur à celui de superviseur. En effet, le conducteur sera bientôt en mesure d'effectuer une tâche secondaire mais devra toutefois être capable de reprendre le contrôle dans le cas d'une situation critique non gérée par le système autonome. Ceci implique que le rôle des nouvelles interfaces et interactions au sein du véhicule est important à prendre en compte. Cet article décrit la conception d'une application transmettant au conducteur des informations relatives à l'environnement perçu par son véhicule sous forme de modules. Cette application s'affiche en partage d'écran sur une tablette grâce à laquelle une tâche secondaire peut être effectuée.de premiers tests ont été effectués avec cette application dans un simulateur de conduite. Ils ont permis de tester l'acceptation de l'application et la clarté des informations transmises. Les résultats ont globalement montré que les participants ont correctement identifié certains facteurs limitant le bon fonctionnement du pilote autonome tout en réalisant une tâche secondaire sur tablette.

Exploiting BLE beacons capabilities in the NESTORE monitoring system
Conférence ArODES

Filippo Palumbo, Paolo Baronti, Antonino Crivello, Francesco Furfari, Michele Girolami, Fabio Mavilia, Marta Civiello, Enrico Denna, Leonardo Angelini, Mira El Kamali, Omar Abou Khaled, Elena Mugellini, Giancarlo Pace

Proceedings of the 5th Italian Workshop on Artificial Intelligence for Ambient Assisted Living 2019, co-located with 18th International Conference of the Italian Association for Artificial Intelligence, AI*AAL@AI*IA 2019, 22 November 2019, Rende, Italy

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Résumé:

Monitoring physiological and behavioural data related to the five domains of well-being (i.e., physical, mental, cognitive, social, and nutritional) is relevant for assessing the profile of people using assistive technologies, in order to provide early detection and adaptive support to his changing individual needs related to ageing. In this paper, we present a system called NESTORE that aims at addressing such a challenge. In particular, we focus on the enabling technology that composes the core set of devices of the so-called environmental monitoring system, namely the NESTORE Bluetooth Low Energy beacons. The presented system performs a range of services including data collection and analysis of short- and long-term trends in social and behavioural parameters. Furthermore, using the same set of devices the system provides insights on the status of the user’s vital space in terms of thermal comfort. We provide an overview of the NESTORE environmental monitoring system and details and evaluation of the software modules built upont the chosen technology: social interaction detection, indoor behavioural index inference, and indoor thermal comfort detection.

Desigining an e-coach to tailor training plans for road cyclists
Conférence ArODES

Alessandro Silacci, Omar Abou Khaled, Elena Mugellini, Maurizio Caon

Proceedings of 3rd International Conference on Human Systems Engineering and Design: Future Trends and Applications (IHSED 2019), 16-18 September 2019, Munich, Germany

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Résumé:

Athletes seek to constantly improve their performances pushing their limits and overwork is often the direct consequence of this behavior. This is not a common problem for professionals, who usually are followed by a coach, but it is a growing phenomenon in amateur sports, which drives people to get injured because of overtraining or incorrect movements. Meantime, advances in artificial intelligence enabled the creation of new tools increasingly capable of understanding the complexity of our world. We therefore propose a novel e-coaching system for road cycling athletes, able to automatically follow and tailor their training plans. This paper describes the design of the machine learning algorithm, its model based on reinforcement learning and the metrics that were adopted for the scoring system. Finally, we report our tests, which show that the virtual coach already can compete with human experts in making a proper personalized training plan.

Convey situation awareness in conditionally automated driving with a haptic seat :
Conférence ArODES
a mobile application for conditionally automated vehicles

Marine Capallera, Peïo Barbé-Labarthe, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Proceedings of the 11th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI'19, 22-25 September 2019, Utrecht, Netherlands

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Résumé:

Conditionally automated driving is rapidly evolving and one of its major issues is the reduction of the driver’s attention to her/his environment. After a brief study of interactions increasing situation awareness, and more specifically haptic interactions, this paper proposes the use of vibrations in the seat. Vibrations, with the variation of their location, frequency and amplitude, allow to transmit to the driver various information such as the position of obstacles around her/his vehicle and the state of deterioration of track markings. The results of a first exploratory test are promising on the use of haptic interactions and they pave the way for future experiments.

Workshop on explainable AI in automated driving
Conférence ArODES

Quentin Meteier, Marine Capallera, Leonardo Angelini, Elena Mugellini, Omar Abou Khaled, Stefano Carrino, Emmanuel de Salis, Stéphane Galland, Susanne Boll

Proceedings of the 11th International Conferecne on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI'19, 22-25 September 2019, Utrecht, Netherlands

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Résumé:

With the increasing use of automation, users tend to delegate more tasks to the machines. Such complex systems are usually developed with “black box” Artificial Intelligence (AI), which makes these systems difficult to understand for the user. This assumption is particularly true in the field of automated driving since the level of automation is constantly increasing via the use of state-of-the-art AI solutions. We believe it is important to investigate the field of Explainable AI (XAI) in the context of automated driving since interpretability and transparency are key factors for increasing trust and security. In this workshop, we aim at gathering researchers and industry practitioners from different fields to brainstorm about XAI with a special focus on human-vehicle interaction. Questions like “what kind of explanation do we need”, “which is the best trade-off between performance and explainability” and “how granular should the explanations be” will be addressed in this workshop.

Secondary task and situation awareness :
Conférence ArODES
a mobile application for conditionally automated vehicles

Marine Capallera, Emmanuel de Salis, Quentin Meteier, Leonardo Angelini, Stefano Carrino, Omar Abou Khaled, Elena Mugellini

Proceedings of the 11th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI'19, 22-25 September 2019, Utrecht, Netherlands

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Résumé:

Autonomous vehicles are developing rapidly and will lead to a significant change in the driver’s role: s/he will have to move from the role of actor to the role of supervisor. Indeed, s/he will soon be able to perform a secondary task but s/he must be able to take over control when a critical situation is not managed by the driving system. The role of new interfaces and interactions within the vehicle is important to take into account. This article describes the design of an application that provides the driver with information about the environment perceived by the vehicle. This application is displayed as split screen on a tablet by which a secondary task can be performed. The results of initial experiment showed that the participants correctly identified all the factors limiting the proper functioning of the driving system while performing a secondary task on the tablet.

Owner manuals review and taxonomy of ADAS limitations in partially automated vehicles :
Conférence ArODES
a mobile application for conditionally automated vehicles

Marine Capallera, Quentin Meteier, Emmanuel de Salis, Leonardo Angelini, Stefano Carrino, Omar Abou Khaled, Elena Mugellini

Proceedings of the 11th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI'19, 22-25 September 2019, Utrecht, Netherlands

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Résumé:

In the context of highly automated driving, the driver has to be aware of driving risks and to take over control of the car in hazardous situations. The goal of this paper is to categorize and analyze the factors that lead to such critical scenarios. To this purpose, we analyzed limitations of Advanced DriverAssistance Systems (ADAS) extracted from owner manuals of 12 partially automated cars available on the market. A taxonomy with 6 macro-categories and 26 micro-categories is proposed to classify and better understand the limitations of these vehicles. We also investigated if these limitations are conveyed to the driver through Human-Machine Interaction (HMI) in the car. Some suggestions are made to better communicate these limitations to the driver in order to raise his/her situation awareness.

Bus simulator in virtual reality for young adults with intellectual disabilities
Conférence ArODES

Francesco Carrino, Robin Cherix, Abou Khaled Omar, Elena Mugellini, Dominique Wunderle

Proceedings of the 4th Gamification Serious Games Symposium (GSGS 19)

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Résumé:

Virtual Reality (VR) can be used to simulate training scenarios that may be too dangerous or too expensive to be recreated in real life. Currently, people with intellectual disability (ID) train complex everyday situations in the real world under the strict supervision of one (or more) accompanying person until they become autonomous. However, these real-life simulations present risks, can be complicated to set up, and mobilizing the involved people requires time and money. This paper presents a VR simulator conceived with the help of social educators and intended for teenagers and young adults with a light or moderate ID. The simulation enables the users to train different conditions in the scenario of a public transport bus in an urban area.

Leak detection using random forest and pressure simulation
Conférence ArODES

Lucien Aymon, Jean Decaix, Francesco Carrino, Pierre-André Mudry, Elena Mugellini, Omar Abou Khaled, Richard Baltensperger

Proceedings of 2019 6th Swiss Conference on Data Science (SDS), 14 June 2019, Bern, Switzerland

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Résumé:

Water is a scarce resource which is becoming increasingly inaccessible. It is therefore necessary, in most parts of the world, to capture, transport and allocate it efficiently and thoughtfully. The implementation of monitored water distribution networks is often expensive. The purpose of this project is therefore to monitor leakage and consumption in a non-pressurized agricultural irrigation system using only inexpensive and easily installed pressure sensors. We modeled the water network to automatically simulate a leak randomly through the network. These simulated pressures serve as a dataset to train, test and validate a Random Forest algorithm that detects the leaks. Through pressure measures, the model can locate the junction closest to the leak with an accuracy of 96.24%. This approach therefore allows leaks detection in a water distribution system without the use of expensive flow sensors.

Empathic response generation in chatbots
Conférence ArODES

Timo Spring, Jacky Casas, Karl Daher, Elena Mugellini, Omar Abou Khaled

Proceedings of 4th Swiss Text Analytics Conference (SwissText 2019), 18-19 June 2019, Wintherthur, Switzerland

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Résumé:

Recent years show an increasing popularity of chatbots, with latest efforts aiming to make them more empathic and humanlike, finding application for example in customer service or in treating mental illnesses. Thereby, emphatic chatbots can understand the user’s emotional state and respond to it on an appropriate emotional level. This survey provides an overview of existing approaches used for emotion detection and empathic response generation. These approaches raise at least one of the following profound challenges: the lack of quality training data, balancing emotion and content level information, considering the full end-to-end experience and modelling emotions throughout conversations. Furthermore, only few approaches actually cover response generation. We state that these approaches are not yet empathic in that they either mirror the user’s emotional state or leave it up to the user to decide the emotion category of the response. Empathic response generation should select appropriate emotional responses more dynamically and express them accordingly, for example using emojis.

LoRaLoc :
Conférence ArODES
machine learning-based fingerprinting for outdoor geolocation using LoRa

Francesco Carrino, Ales Janka, Omar Abou Khaled, Elena Mugellini

Proceedings of 6th Swiss Conference on Data Science – SDS|2019, 14 June 2019, Bern, Switzerland

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Résumé:

LoRa technology allows long-range transmissions with low power consumption and it can also be used indoor. For these reasons, the introduction of a precise timestamping of LoRa frames provides the possibility to use this technology for accurate localization in many scenarios. However, this is still very challenging to achieve in non-line-of-sight environments such as urban landscapes. In this paper, we present a “fingerprinting” method to perform outdoor geolocation based on machine learning (Random Forest and Neural Networks) applied to a reference map. The map combines Time Difference Of Arrival (TDOA) measurements generated by a LoRa network and GPS location as ground truth. We tested our approach on simulated data achieving promising results with a Root Mean Squared Error below 9 meters by using a Long Short-Term Memory (LSTM) network.

Predictive modeling for optimization of field operations in bike-sharing systems
Conférence ArODES

Simon Ruffieux, Elena Mugellini, Omar Abou Khaled

Proceedings of 6th Swiss Conference on Data Science – SDS|2019, 14 June 2019, Bern, Switzerland

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Résumé:

This article presents a framework to facilitate and optimize the management of field operations for bike-sharing companies. The study focuses on two modules based on artificial intelligence: the prediction module forecasts bikes availability at station-level using machine-learning and the rebalancing module provides optimal rebalancing operations and routes using constraint programming. The evaluation on 9 months of data collected from a real bike-sharing network notably highlighted the superior forecasting accuracy of the Multilayer Perceptron algorithm.

A decision support system to propose coaching plans for seniors
Conférence ArODES

Paula Subias-Beltran, Silvia Orte, Eloisa Vargiu, Filippo Palumbo, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Maurizio Caon

Proceedings of the 32nd IEEE CBMS International Symposium on Computer-Based Medical Systems

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Résumé:

This paper presents the decision support system that has been defined and developed under the umbrella of the NESTORE project. The main goal of the proposed system is to help users in selecting coaching plans by proposing personalised recommendations based on their behaviours and preferences. Recognising such behaviours and their evolution over time is therefore a crucial element for tailoring the interaction of the system with the user. A three-layer system composed of pathways, coaching activity plans, and coaching events, constitutes the so-called coaching timeline on which the analysis is grounded. Various techniques are used to model and personalise the recommendations and feedback. Firstly, the indicators are extracted from disparate data sources, then these are modelled through a profiling system and, finally, recommendations on the pathways and coaching plans are performed through a scoring and a tagging system.

Temporal sentiment tracking and analysis on large-scale social events
Conférence ArODES

Hussein Hazimeh, Mohammad Harissa, Elena Mugellini, Omar Abou Khaled

Proceedings of ACM 8th International Conference on Software and Computer Applications (ICSCA 2019), 19-21 February 2019, Penang, Malaysia

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Résumé:

Online Social Networks (OSNs) are emergent resources for largescale multi-purpose data analytics. Sentiment analysis (SA) is a trending research area on OSNs. SA approaches for studying and analyzing events are still missing several shortcomings. Unlike other approaches that analyzed micro-scaled events such as "marriage", "graduation", we analyzed the sentiment of large-scale social events such as "festivals". In this paper, we address the problem of finding the sentiment of large-scale social events and introduce a novel method for this goal. To address this problem, we utilize a lexical approach. The features used in our method are universal and composed of auxiliary and essential features from OSNs. Auxiliary features are non-textual features used to emphasize the sentiment polarity. Moreover, we track the temporal interchanges of audience sentiment on OSNs.We finally empirically validate that our method can outperform with high precision and recall values.

Reliable user profile analytics and discovery on social networks
Conférence ArODES

Hussein Hazimeh, Elena Mugellini, Omar Abou Khaled

Proceedings of ACM 8th International Conference on Software and Computer Applications (ICSCA 2019), 19-21 February 2019, Penang, Malaysia

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Résumé:

In this paper, we introduce heterogeneous methods to analyze and discover user profiles on Online Social Networks (OSNs).We are the first to investigate such methods to profile users on multiple OSNs (Facebook, Twitter, Google+, etc.). In addition, we perform reliable analytics, i.e., users in the datasets are identical. Deeply speaking, if we have a dataset of n number of user profiles on Facebook, we do not analyze n different profiles on corresponding OSN. However, we first perform a user Profile Matching (PM) task from a seed dataset (Facebook for instance) and then match these profiles inside this dataset to their corresponding profiles on other OSNs, then we start our User Profile Analysis and Discovery task (UPAD). We show that our UPAD methods uncover very interesting facts about OSN users.

Classifying vehicles' behaviors using global positioning systems information
Conférence ArODES

Alessandro Silacci, Julien Tscherrig, Elena Mugellini, Omar Abou Khaled

Proceedings of the 13th International Conference on Digital Society and eGovernments ICDS 2019, 24-28 February 2019, Athens, Greece

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Résumé:

This study presents a solution to enhance the cities’ traffic control by classifying particular vehicles’ behaviors. A Support Vector Machine (SVM) approach is presented, enabling the system to classify cars that are looking to park and those that are simply transiting through a city. Through this paper, we also propose a new way of managing the high density of traffic data using a grid. The results show that the system is able to distinguish the two different behaviors with an accuracy averaging 80%.

2018

Bike usage forecasting for optimal rebalancing operations in bike-sharing systems
Conférence ArODES

Simon Ruffieux, Elena Mugellini, Omar Abou Khaled

Proceedings of 2018 IEEE 30th International Conference on Tools with Artificial Intelligence (ICTAI), 5-7 November 2018, Volos, Greece

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Résumé:

This article presents the first step of a project focusing on enhancing the management of bike-sharing systems. The objective of the project is to optimize the daily rebalancing operations that need to be performed by operators of bike-sharing systems using machine-learning algorithms and constraint programming. This study presents an evaluation of machine learning algorithms developed for forecasting the availability of bikes on three Swiss bike-sharing networks. The results demonstrate the superiority of the Multi-Layer Perceptron algorithm for forecasting available bikes at station-level for different prediction horizons and its applicability for real-time prediction generation.

Automatic embedding of social network profile links into knowledge graphs
Conférence ArODES

Hussein Hazimeh, Elena Mugellini, Simon Ruffieux, Omar Abou Khaled, Philippe Cudré-Mauroux

Proceedings of the 9th International Symposium on Information and Communication Technology (SoICT 2018), 6-7 December 2018, Da Nang City, Viet Nam

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Résumé:

Recent Knowledge Graphs (KGs) like Wikidata and YAGO are often constructed by incorporating knowledge from semi-structured heterogeneous data resources such as Wikipedia. However, despite their large amount of knowledge, these graphs are still incomplete. In this paper, we posit that Online Social Networks (OSNs) can become prominent data resources comprising abundant knowledge about real-world entities. An entity on an OSN is represented by a profile; the link to this profile is called a social link. In this paper, we propose a KG refinement method for adding missing knowledge to a KG, i.e., social links. We target specific entity types, in the scientific community, such as researchers. Our approach uses both scholarly data resources and existing KG for building knowledge bases. Then, it matches this knowledge with OSNs to detect the corresponding social link(s) for a specific entity. It uses a novel matching algorithm, in combination with supervised and unsupervised learning methods. We empirically validate that our system is able to detect a large number of social links with high confidence.

UNICITY :
Conférence ArODES
a depth maps database for people detection in security airlocks

Joël Dumoulin, Olivier Canévet, Michael Villamizar, Hugo Nunes, Omar Abou Khaled, Elena Mugellini, Jean-Marc Odobez, Fabrice Moscheni

Proceedings of the 15th IEEE International Conference on Advanced Video and Signal-based Surveillance (AVSS 2018), 27-30 November 2018, Auckland, New Zealand

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Résumé:

We introduce a new dataset, dubbed UNICITY , for the task of detecting people in security airlocks in top view depth images. If security companies have been relying on computer systems and algorithms for a long time, very few are trusting artificial intelligence and more specifically machine learning approaches in production environments. We are confident that the recent advances in these domains, especially with the democratization of deep learning, will open new horizons for security systems. We release this dataset to encourage the development of such approaches in the scientific community. UNICITY consists of 58k images collected from 65 recorded sequences with one or two people performing different behaviors including attacks and trickeries (e.g. tailgating). It also provides full annotation of people such as the location of head and shoulders. As as result, UNICITY is perfectly suited for training and adapting machine learning algorithms for video surveillance applications. This paper presents the data collection, an evaluation protocol, as well as two baseline methods for attack detection.

Real-time detection of micro-expressions through new feature selection for helping doctors to know their patients
Conférence ArODES

Karl Daher, Elena Mugellini, Denis Lalanne, Omar Abou Khaled

Proceedings of Fachkonferenz Technik, Architektur und Life Sciences (FTAL) 2018, 18-19 October, Lugano (TI), Switzerland

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Food diary coaching chatbot
Conférence ArODES

Jacky Casas, Elena Mugellini, Omar Abou Khaled

Proceedings of ACM International Symposium on Wearble Computers (ISWC'18), Ubicomp 2018, 8-12 October 2018, Singapore

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Résumé:

This article presents the design of a conversational agent whose goal is to coach people who wish to improve their food lifestyle. The data gathering method is easy and especially fast in order to simplify the life of the user. The goals are defined by the user and the follow-up is done daily. Two choices are available to the user: reduce his consumption of meat or consume more fruits and vegetables. User tests were conducted with 36 people. Only 11% of the challenges were successful, but in 65% of cases, the tester has managed to improve its consumption compared to before.

Ubiquitous Chatbots :
Conférence ArODES
workshop on wearable and embodied conversational agents

Leonardo Angelini, Maurizio Caon, Jacky Casas, Frederica Cena, Amon Rapp, Omar Abou Khaled, Elena Mugellini

Proceedings of ACM International Symposium on Wearble Computers (ISWC'18), Ubicomp 2018, 8-12 October 2018, Singapore

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Résumé:

Human-computer interaction is progressively shifting towards natural language communication, determining the rise of conversational agents. In the context of ubiquitous computing, the opportunities for interacting with new services and systems in a conversational manner are increasing and, nowadays, it is common to talk to home assistants to interact with a smart environment or to write to chatbots to access an online service. This workshop aims at bringing together researchers from academia and industry in order to establish a multidisciplinary community interested in discovering and exploring the challenges and opportunities coming from the ubiquity of conversational agents.

Towards the NESTORE e-Coach :
Conférence ArODES
a tangible and embodied conversational agent for older adults

Mira El Kamali, Leonardo Angelini, Maurizio Caon, Giuseppe Andreoni, Omar Abou Khaled, Elena Mugellini

Proceedings of ACM International Symposium on Wearble Computers (ISWC'18), Ubicomp 2018, 8-12 October 2018, Singapore

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Résumé:

The ability to engage the user in a conversation and the credibility of the system are two fundamental characteristics of virtual coaches. In this paper, we present the architecture of a conversational e-coach for promoting healthy lifestyles in older age, developed in the context of the NESTORE H2020 EU project. The proposed system allows multiple access points to a conversational agent via different interaction modalities: a tangible companion that embodies the virtual coach will leverage voice and other non-verbal cues in the domestic environment, while a mobile app will integrate a text-based chat for a ubiquitous intervention. In both cases, the conversational agent will deliver personalized interventions based on behavior change models and will promote trust by means of emotionally rich conversations.

Social networks serving web feeds
Conférence ArODES

Hussein Hazimeh, Ahmad Traboulsi, Hassan Noureddine, Elena Mugellini, Omar Abou Khaled

Proceedings of the 10th International Conference on Information Management and Engineering (ICIME 2018), 22-24 September 2018, Salford, United Kingdom

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Résumé:

A web feed is a new kind of web services that was created in the past two decades to keep remote users updated with the latest news without having to crawl individual web sites. Currently, the existing web feed services get their information from one source (the website hosting the feed) in a standardized format that is normally structured as follows: title, description, link, image and date. In this paper, we propose a new method called NERVES (social Networks sERVing wEb feedS) that connects web feeds to a Social Networking Sites (SNS), and aims at (1) keeping users aware of the wider context taking into account both the source of the feed and the SNS. (2) Our approach enriches existing feeds with extra information harvested from the social web. We validated the efficiency and accuracy of our approach on public data and report on empirical results yielding an accuracy of 94%.

IMPACT :
Conférence ArODES
a serious game in virtual and augmented reality to enhance mirror therapy

Francesco Carrino, Charlotte Junod, Omar Abou Khaled, Elena Mugellini

Proceedings of GSGS'18: 3rd Gamification Serious Game Symposium, 5-6 July 2018, Neuchâtel, Switzerland

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IMPACT :
Conférence ArODES
immersive mirror for pain control and treatment

Francesco Carrino, Omar Abou Khaled, Elena Mugellini

Lecture Notes in Computer Science, Proceedings of the International Conference on Aumented Reality, Virtual Reality and Computer Graphics (AVR 2018), 24-27 June 2018, Ottranto, Italy

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Résumé:

We present an overview of IMPACT, a system that uses virtual and augmented reality to enhance the mirror therapy for the treatment of phantom limb pain and stroke rehabilitation. The system tracks users’ movements and the head position using a combination of depth cameras and inertial sensors. This information is then fused together in a 3D full-body human model able to adapt to the patient’s characteristics (e.g., skin color, limb size) and avoid unnatural movements due to possible bad tracking (e.g., a joint bended in an unnatural way). IMPACT includes three serious games that can be played in first-person point of view and that allow different levels of immersion according to the needs of the treatment.

Teenagers' usage of a mobile-wearable-cloud platform to promote healthy lifestyles :
Conférence ArODES
the PEGASO experience

Maurizio Caon, Stefano Carrion, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Filip Velickovski, Giuseppe Andreoni

Proceedings of the 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC'18)

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Résumé:

In contemporary society, non-communicable diseases linked to unhealthy lifestyles, such as obesity, are on the rise with a major impact on global deaths. Prevention is the new frontier, promising to increase life expectancy and quality, while reducing costs related to healthcare. The PEGASO project developed a mobile ecosystem where the digital Companion aims at empowering teenagers in the adoption of healthy lifestyles. The pilot study conducted in three European countries (Spain, UK and Italy) shows a good acceptance of the system and that teenagers are keen to use mobile technology to improve their lifestyle, although wearable devices did not engage the young users

Towards multisensory storming
Conférence ArODES

Maurizio Caon, Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Assunta Matassa

Proceedings of Designing Interactive Systems (DIS), 9-13 June 2018, Hong Kong, China

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Résumé:

Current digital system interfaces are mainly based on vision and hearing. HCI practitioners and researchers need to introduce unconventional senses in interaction design in order to avoid sensory deprivation in digital life and enhance information accessibility. In this paper, we present a novel technique, called Multisensory Storming, which aims at supporting the multisensory interaction design process. Multisensory Storming is a group method enabling the generation of new ideas and design proposals in physical contexts through exercises that allow exploring all the human senses.

Internet of tangible things :
Conférence ArODES
workshop on tangible interaction with the internet of things

Leonardo Angelini, Zuzanna Lechelt, Eva Hornecker, Paul Marshall, Can Liu, Margot Brereton, Alessandro Soro, Nadine Couture, Omar Abou Khaled, Elena Mugellini

Proceedings of CHI 2018, 21-26 April 2018, Montréal, Canada

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Résumé:

The rise of the Internet of Things (IoT) brings abundant new opportunities to create more effective and pleasing tangible user interfaces that capitalize on intuitive interaction in the physical world, whilst utilizing capabilities of sensed data and Internet connectivity. However, with these new opportunities come new challenges; little is still known how to best design tangible IoT interfaces that simultaneously provide engaging user experiences and foster a sense of understanding about the often-complex functionality of IoT systems. How should we map previous taxonomies and design principles for tangible interaction into the new landscape of IoT systems? This workshop will bring together a community of researchers from the fields of IoT and tangible interaction, in order to explore and discuss how parallels between tangible interaction and the properties of IoT systems can best be capitalised on as HCI research moves increasingly toward the Internet of Tangible Things (IoTT). Through ideation and discussion, the workshop will function as a springboard for the community to begin creating new taxonomies and design considerations for the emerging IoTT

Internet of Tangibles
Conférence ArODES

Leonardo Angelini, Elena Mugellini, Omar Abou Khaled, Nadine Couture, Elise van der Hoven, Saskia Bakker

Proceedings of 12th International Conference on Tangible, Embedded and Embodied Interactions (TEI'18), 18-21 March 2018, Stockholm, Sweden

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Résumé:

There is an increasing interest in the HCI research community to design richer user interactions with the Internet of Things (IoT). This studio will allow exploring the design of tangible interaction with the IoT, what we call Internet of Tangibles. In particular, we aim at investigating the full interaction-attention continuum, with the purpose of designing IoT tangible interfaces that can switch between peripheral interactions that do not disrupt everyday routines, and focused interactions that support user’s reflections. This investigation will be conducted through hands-on activities where participants will prototype tangible IoT objects, starting by a paper prototyping phase, supported by design cards, and followed by an Arduino prototype phase. The purpose of the studio is also establishing a community of researchers and practitioners, from both academy and industry, interested in the field of tangible interaction with the Internet of Things.

Designing the interaction with the internet of tangible things :
Conférence ArODES
a card set

Leonardo Angelini, Elena Mugellini, Nadine Couture, Omar Abou Khaled

Proceedings of the 12th International Conference on Tangible, Embedded, and Embodied Interaction (TEI'18), 18-21 March 2018, Stockholm, Sweden

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Résumé:

Current interactions for the Internet of Things are often constrained behind a screen. With the Internet of Tangible Things (IoTT) we aim at promoting the design of richer interactions, embodied in physical IoT objects. To this purpose, we propose a card set for the design of tangible interaction with IoT objects, which contains 8 cards for tangible interaction properties and 8 for IoT properties, in order to explore how tangible properties can be exploited for enhancing the interaction with IoT objects. We tested the card set in a dedicated workshop, observing that participants were able to explore most of the tangible and IoT properties. To complement the IoT card set, a hardware prototyping toolkit with examples for each of the 8 tangible properties is currently under development.

2017

SocialMatching++ :
Conférence ArODES
a novel approach for interlinking user profiles on social networks

Hussein Hamizeh, Elena Mugellini, Omar Abou Khaled, Philippe Cudré-Mauroux

Proceedings of the PROFILES@ISWC 2017: Sementic web conferene, 22 october 2017, Vienna, Austria

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Résumé:

With the large number of users connected to social networks, screenname duplication is a rising problem, which leads to interference when trying to recognize users. A number of algorithms have been proposed to distinguish user profiles on one or multiple social networks. The main task in this context is to have robust features. According to the state-of-the-art approaches, features can be: content and behavioural based features, that compare content similarity between posts or behaviour similarity (timestamps between posts (behavioural), or overlapping between content (content) for example). Attribute-based features that compare profiles attributes, such as gender, age, location or image. In this paper, we tackle this problem and propose SocialMatching++ a novel approach that leverages: (1) user life events such as graduation, marriage or new job, which used to enhance the behavioural approaches (2) profile biographies, which consist in small paragraphs that users write to comprise arbitrary information about themselves. These are used to enhance the attribute approaches. To evaluate our approach, we conducted experiments on 2,263 different profiles from Facebook matched with 5,694 Twitter users, and compared them with two baseline approaches. Our results show that SocialMatching++ achieves better results compared to the baselines approaches, showing that our system successfully bridges the gap between behavioural and attribute based approaches.

Real-time usage forecasting for bike-sharing systems :
Conférence ArODES
a study on random forest and convolutional neural network applicability

Simon Ruffieux, Nicolas Spycher, Elena Mugellini, Omar Abou Khaled

Proceedings of the 2017 Intelligent Systems Conference (IntelliSys), 7-8 september 2017, London, UK

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Résumé:

In this paper, we present a system that has been developed to facilitate the collection and use of Bike-Sharing Systems data for research, notably to develop and compare bike usage forecasting algorithms. We collected internal and external data for six different European cities and developed a system providing short and long-term predictions of bikes and slots availabilities for bike-sharing stations in real-time. In order to provide the best predictions, we developed and compared the performances of two types of algorithm; the first one is based on the state-of-the-art Random Forest algorithm and the second one is based on Convolutional Neural Networks. Our study demonstrates their applicability, showing better accuracy for short-term predictions with the Random Forest algorithm and better long-term prediction accuracy with the Convolutional Neural Networks algorithm.

Investigating how to measure mobile user engagement
Conférence ArODES

Stefano Carrino, Maurizio Caon, Omar Abou Khaled, Elena Mugellini

Proceedings of the 6th International Conference Mobihealth 2016, "Wireless Mobile Communication and Healthcare", 14-16 November 2016, Milan, Italy

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Résumé:

User Engagement is a keyword employed by software companies, researchers, and developers designing user-centred applications. Indeed, designing digital experiences to engage users is a goal that is becoming increasingly important for several disciplines such as education, marketing, information systems, and much more. Since opinions concerning the definition of user engagement greatly vary, the question comes up whether it is possible to provide a universal set of metrics to equally measure the engagement in any kind of application and in mobile applications in particular. Starting from results in the literature, this paper provides a simple definition of user engagement and a related set of metrics. Such metrics will be evaluated in a pilot study with more than 300 teenagers in four European countries.

A mobile serious game fostering healthy eating habits
Conférence ArODES

Stefano Carrino, Maurizio Caon, Elena Mugellini

Proceedings of the 2nd Gamification & Serious Games Symposium (GSGS 17), 30 June-1 July 2017, Neuchâtel, Switzerland

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PEGASO companion :
Conférence ArODES
a mobile app to promote healthy lifestyles among adolescents

Maurizio Caon, Stefano Carrino, Laura Condon, Antonio Ascolese, Sara Facchinetti, Marco Mazzola, Paolo Perego, Filip Velickovski, Giuseppe Andreoni, Elena Mugellini

Proceedings of the 6th International Conference Mobihealth 2016, "Wireless Mobile Communication and Healthcare", 14-16 November 2016, Milan, Italy

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Résumé:

Promoting healthy lifestyles can be a successful weapon in counter-fighting the epidemics of overweight and obesity. The PEGASO project aims at encouraging adolescents to become co-creators of their own health. In particular, it aims at creating an ecosystem where adolescents are motivated and supported in adopting healthy lifestyles. In this ecosystem, the PEGASO Companion, a smartphone app, plays the role of universal access to healthy services and providing personalised mechanisms to support behaviour change.

Towards a multi-feature enabled approach for optimized expert seeking
Conférence ArODES

Mariam Abdullah, Hassan Noureddine, Jawad Makki, Hussein Charara, Hussein Hazimeh, Omar Abou Khaled, Elena Mugellini

Proceedings of Computer Science Information Technology (CS IT), CSCP 2017, 25-26 March 2017, Geneva, Switzerland

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Résumé:

With the enormous growth of data, retrieving information from the Web became more desirable and even more challenging because of the Big Data issues (e.g. noise, corruption, bad quality...etc.). Expert seeking, defined as returning a ranked list of expert researchers given a topic, has been a real concern in the last 15 years. This kind of task comes in handy when building scientific committees, requiring to identify the scholars’ experience to assign them the most suitable roles in addition to other factors as well. Due to the fact the Web is drowning with plenty of data, this opens up the opportunity to collect different kinds of expertise evidence. In this paper, we propose an expert seeking approach with specifying the most desirable features (i.e. criteria on which researcher’s evaluation is done) along with their estimation techniques. We utilized some machine learning techniques in our system and we aim at verifying the effectiveness of incorporating influential features that go beyond publications.

2016

Nautilus :
Conférence ArODES
real-time interaction between dancers and augmented reality with pixel-cloud avatars

Andreas Fischer, Pascal Buchs, Maurizio Caon, Omar Abou Khaled, Elena Mugellini, Sara Grimm, Franziska Meyer, Claudia Wagner, Valentine Bernasconi, Angelika Garz

Actes de la 28ième conférence francophone sur l’Interaction Homme-Machine (IHM'16), 25-28 octobre 2016, Fribourg, Suisse

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Résumé:

L'interaction en temps réel avec la réalité augmentée re-présente un nouveau matériel avec lequel les danseurs et chorégraphes peuvent travailler pour leurs spectacles. Cela permet aux danseurs d'aller au-delà de la seule syn-chronisation entre musique et mouvement et amène de nouvelles opportunités comme modifier l'environnement audio-visuel et de réagir à ses changements. Dans cet article, nous présentons le processus et le résultat d'un travail collaboratif entre art et technologie, lequel a per- mis d’explorer ce nouveau matériel dans le cadre du spec- tacle Nautilus. Nous suggérons une approche basée sur le tracking des corps par caméra 3D et sur des avatars com- posés de nuages de pixels ; cette approche permet aux danseurs d’interagir de manière fiable avec la réalité augmentée en gardant la liberté de mouvements.

Comparing gesture, speech and touch interaction modalities for in-vehicle infotainment systems
Conférence ArODES

Leonardo Angelini, Jürgen Baumgartner, Francesco Carrino, Stefano Carrino, Maurizio Caon, Omar Abou Khaled, Jürgen Sauer, Denis Lalanne, Elena Mugellini, Andreas Sonderegger

Actes de la 28e conférence francophone sur l'Interaction Homme-Machine on - IHM '16, 25-28 octobre 2016, Fribourg, Suisse

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Résumé:

This paper compares an emergent interaction modality for the In-Vehicle Infotainment System (IVIS), i.e., gesturing on the steering wheel, with two more popular modalities in modern cars: touch in the central dashboard and speech. We conducted a between-subjects experiment with 20 participants for each modality to assess the interaction performance with the IVIS and the impact on the driving performance. Moreover, we compared the three modalities in terms of usability, subjective workload and emotional response. The results showed no statically significant differences between the three interaction modalities regarding the various indicators for the driving task performance, while significant differences were found in measures of IVIS interaction performance: users performed less interactions to complete the secondary tasks with the speech modality, while, in average, a lower task completion time was registered with the touch modality. The three interfaces were comparable in terms of perceived usability, mental workload and emotional response.

Third workshop on full-body and multisensory experience
Conférence ArODES

Maurizio Caon, Leonardo Angelini, Elena Mugellini, Assunta Matassa, Nadia Bianchi-Berthouze, Aneesha Singh, Ana Tajadura-Jiménez

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct, UbiComp '16, 12-16 September 2016, Heidelberg, Germany

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Résumé:

The workshop on "Full-Body and Multisensory Experience" aims at discussing the rich possibilities that the body offers to experience the external world and the prospects that arise for interaction designers when these often-neglected abilities are taken into account. In particular, the workshop will focus on the rediscovery of the human senses, either alone or in a multimodal combination, and of the perceptual-motor abilities of our body. The one-day workshop is divided in three steps: first phase is for the generation of ideas on multisensory interfaces, in the second phase, participants will have the possibilities to explore and rediscover their sensorimotor abilities through several exercises and games; in the third and last phase, there will be a further creative session in order to evaluate how the full body and multisensory activities have fostered people's creative processes. The aim of the whole experience is twofold: first, inspiring participants in designing novel concepts for multisensory interfaces; second, providing a preliminary study on the effect of these exercises in fostering creativity and supporting the design process of multisensory interfaces.

Multi-sensory EmotiPlant :
Conférence ArODES
multimodal interaction with augmented plants

Leonardo Angelini, Maurizio Caon, Stefania Caparrota, Omar Abou Khaled, Elena Mugellini

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct, UbiComp '16, 12-16 September 2016, Heidelberg, Germany

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Résumé:

Plants are live beings with often underestimated sensory and communicative abilities. In this paper, we sensitize to these natural abilities and we show how they can be extended through technology. To these purpose, we propose a framework for multisensory augmented plants and we present the design of three different augmented plants that are able to communicate with humans through different modalities. The three systems aim at bridging the communication gap between plants and humans, with a particular focus on cognitive or sensory impaired people.

Tangible interaction with light in the IoT
Conférence ArODES

Maurizio Caon, Leonardo Angelini, Omar Abou Khaled, Dzmitry Aliakseyeu, Jon Mason, Elena Mugellini

Proceedings of the 2016 ACM International Joint Conference on Pervasive and Ubiquitous Computing: Adjunct, UbiComp '16, 12-16 September 2016, Heidelberg, Germany

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Résumé:

Interacting with digital lighting systems opens new opportunities and challenges, especially when those systems are connected to the Internet of Things (IoT). This workshop aims at investigating richer interactions with interconnected lights. We strive for interactions that happen in our everyday environments and that go beyond not only swiping and tapping on a screen, but also the mere tangible switch. This workshop will be an opportunity to discuss and practice novel interactions with light, exploring human bodily and cognitive skills to grasp better the ephemerality of light and of the IoT.

Designing a mobile serious game to promote healthy lifestyles :
Conférence ArODES
motivating teenagers to adopt healthy habits through play

Stefano Carrino, Maurizio Caon, Elena Mugellini, Ian Dunwell, Dalia Morosini

Proceedings of the 8th International Conference on eHealth, Telemedicine, and Social Medicine (eTELEMED 2016), 24-28 April 2016, Venice, Italy

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Résumé:

Behaviours such as diet, sedentariness and how much exercise we do play a major role in influencing health and wellbeing. As a medium, mobile serious games have the potential to educate and foster behaviour change whilst engaging and motivating users. This paper illustrates the user-centred design approach used to develop a mobile serious game to promote healthy lifestyles. In particular, this research, developed in the frame of the PEGASO European project, focuses on teenagers and healthy behaviours linked to the prevention of obesity. In this approach, teenagers from different European countries (Italy, Spain, and United Kingdom) participate to the co-design of the serious game. This activity is still ongoing but first findings show encouraging feedback concerning the generic game mechanics and the designed game.

LinkedPolitics :
Conférence ArODES
incremental semantic lifting of political facts

Julien Tscherrig, Elena Mugellini, Omar Abou Khaled, Philippe Cudré-Mauroux

Proceedings of the 2016 IEEE 30th International Conference on Advanced Information Networking and Applications (AINA), 23-25 March 2016, Crans-Montana, Switzerland

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Résumé:

Exploiting facts that are published online using semi-structured or unstructured formats is a highly complex task, pieces of data are typically published in isolation and periodically updated in a bulk fashion without any coordination. In this paper, we propose a new software pipeline tackling this issue and semantically lifting online facts as Linked Data in a continuous manner. Our solution, LinkedPolitics, extracts, converts, interlinks, and finally makes available as Linked Data online facts that could not be transparently exposed and exploited otherwise. Our system is online, in the sense that it automatically makes available new facts as they are uploaded online. We also present a deployment of LinkedPolitics centered around the Swiss Parliament. Our deployment extracts and semantically lifts a flurry of political facts that are periodically published in unstructured form by the Library Service of the Swiss Federal Assembly. It then automatically materializes a number of views to support different visualizations of the data in order to capture the actions, announcements or votes made by the politicians, as well as their relationships to each other and to external entities such as companies.

Second workshop on full-body and multisensory experience
Conférence ArODES

Assunta Matassa, Leonardo Angelini, Maurizio Caon, Marianna Obrist, Elena Mugellini

Proceedings of the TEI '16 Tenth International Conference on Tangible, Embedded, and Embodied Interaction, 14-17 February 2016, Eindhoven, The Netherlands

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Résumé:

This workshop aims at discussing the rich possibilities that the body offers to experience the external world and the prospects that arise for interaction designers when these often-neglected abilities are taken into account. In particular, the workshop will focus on the rediscovery of the five senses, either alone or in a multimodal combination, and of the perceptual-motor abilities of our body. The one-day workshop is divided in two steps: first, participants will have the possibility to briefly present and discuss with the other attendees their research. Workshop candidates are requested to send a position paper, including a short biography and detailing their research interests and background. Second, participants will have the possibilities to explore and rediscover their sensorimotor abilities through several exercises and games abilities using a critical design approach. Interdisciplinary groups will be challenged to design and develop new interaction experience concepts using our natural 'tools' as prototyping tools.

2015

Affect recognition in a realistic movie dataset using a hierarchical approach
Conférence ArODES

Joël Dumoulin, Diana Affi, Elena Mugellini, Omar Abou Khaled, Marco Bertini, Alberto Del Bimbo

Proceedings of the 1st International Workshop on Affect Sentiment in Multimedia (ASM'15), 30 October 2015, Brisbane, Australia

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Résumé:

Affective content analysis has gained great attention in recent years and is an important challenge of content-based multimedia information retrieval. In this paper, a hierarchical approach is proposed for affect recognition in movie datasets. This approach has been verified on the AFEW dataset, showing an improvement in classification results compared to the baseline. In order to use all the visual sentiment aspects contained in the movies excerpts of a realistic dataset such as FilmStim, deep learning features trained on a large set of emotional images are added to the standard audio and visual features. The proposed approach will be integrated in a system that communicates the emotions of a movie to impaired people and contribute to improve their television experience.

eRS :
Conférence ArODES
a system to facilitate emotion recognition in movies

Joël Dumoulin, Diana Affi, Elena Mugellini, Omar Abou Khaled

Proceedings of the 23rd ACM International Conference on Multimedia (MM'15), 26-30 October 2015, Sydney, Australia

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Résumé:

We present eRS, an open-source system whose purpose is to facilitate the workflow of emotion recognition in movies, released under the MIT license. The system consists of a Django project and an AngularJS web application. It allows to easily create emotional video datasets, process the videos, extract the features and model the emotion. All data is exposed by a REST API, making it available not only to the eRS web application, but also to other applications. All visualizations are interactive and linked to the playing video, allowing researchers to easily analyze the results of their algorithms. The system currently runs on Linux and OS X. eRS can be extended, to integrate new features and algorithms needed in the different steps of emotion recognition in movies.

Movie's affect communication using multisensory modalities
Conférence ArODES

Joël Dumoulin, Diana Affi, Elena Mugellini, Omar Abou Khaled, Marco Bertini, A. del Bimbo

MM '15: Proceedings of the 23rd ACM international conference on Multimedia, 26-30 October 2015, Brisbane, Australia

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Résumé:

The goal of the system presented in this demo is to make possible for the visually and hearing impaired audience to live empathetic viewing experiences using their home theatre. In this work we suggest the incorporation of new emotion communication modalities into the standard television, to provide the targeted audience with sensations that they do not have the opportunity to enjoy because of their disability.

EmotiPlant :
Conférence ArODES
faciliter l'interaction homme-plante pour les seniors

Leonardo Angelini, Omar Abou Khaled, Elena Mugellini

Actes de la 27ème Conférence francophone sur l’Interaction Homme-Machine, 27-30 Octobre 2015, Toulouse, France

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Résumé:

Cet article présente EmotiPlant, un système conçu pour faciliter l’entretien d’une plante d’appartement aux seniors. Nous proposons un concept de plante capable d’exprimer des émotions et d’afficher son état en relation aux conditions physiques de son environnement. Grâce à des interactions de proximité avec la plante et à des expressions anthropomorphisées de son état, la plante devient ainsi un compagnon pour le senior. Cet article présente aussi un premier prototype du système et discute les défis à surmonter pour obtenir un produit utilisable par des seniors dans leur vie quotidienne.

The multisensory interactive window :
Conférence ArODES
immersive experiences for the elderly

Leonardo Angelini, Maurizio Caon, Nadine Couture, Omar Abou Khaled, Elena Mugellini

Proceedings of UBICOMP/ISWC '15 ADJUNCT, 7-11 September 2015, Osaka, Japan

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Résumé:

This paper presents the Multisensory Interactive Window, a system that allows experiencing distant places and communicating with distant people through a tangible installation that exploits the window metaphor and multisensory feedback. Thanks to the feeling of being just in front of a natural landscape or a room inhabited by a beloved person, we strive to enhance the older adult's well-being at home. We illustrate two interaction concepts and a feasibility study for the implementation of the first prototype.

Smart garments and accessories for healthy lifestyles
Conférence ArODES

Maurizio Caon, Stefano Carrino, Elena Mugellini, Alexandra Rosewall Lang, Sarah Atkinson, Giuseppe Andreoni

Proceedings of UBICOMP/ISWC '15 ADJUNCT, 7-11 September 2015, Osaka, Japan

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Résumé:

Wearable devices are trying to conquer the market and to enter the users’ daily life. However, wearables show their limits when creating long-term engagement, which is crucial for helping the users to build healthy lifestyles that can accompany them during their lives. The main goal of this workshop is to bring together researchers and practitioners that can contribute with their expertise in creating common guidelines for the design of wearable devices.

Crowd monitoring :
Conférence ArODES
critical situations prevention using smartphones and group detection

Joseph El Mallah, Francesco Carrino, Omar Abou Khaled, Elena Mugellini

Proceedings of International Conference on Distributed, Ambient, and Pervasive Interactions, DAPI 2015: Distributed, Ambient, and Pervasive Interactions, 2-7 August 2015, Los Angeles, CA, USA

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Résumé:

Festivals and big scale events are becoming more and more popular, they can attract thousands of spectators. Ensuring the safety of the crowd has become a top priority to many organisers after the multitude of dramatic accidents that resulted in losses in human lives. Monitoring the crowd via smartphones is a relatively new technique that emerged recently with the capabilities of mobile phones to transmit their GPS location data. We present a novel approach, based on the local crowd pressure, combined with the detection of groups in a crowd, to detect critical situations and propose evacuation plans that does not separate groups of people that are together. Groups were detected using DBSCAN clustering algorithm with 80 % accuracy. Location acquisition was tested during the Campus Fever event, and 87 % of the collected data had an accuracy lower than 10 m while 29 % of the total data had 5 m of accuracy. During 2 h of monitoring, activity of the application, reduced the battery of 20 %.

Towards an engaging mobile food record for teenagers
Conférence ArODES

Maurizio Caon, Stefano Carrino, Federica Prinelli, Valentina Ciociola, Fulvio Adorni, Claudio Lafortuna, Sarah Tabozzi, José Serrano, Laura Condon, Omar Abou Khaled, Elena Mugellini

Proceedings of 18th International Conference on Image Analysis and Processing, ICIAP 2015: New Trends in Image Analysis and processing - ICIAP 2015 Worshops, 7-11 September 2015, Genova, Italy

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Résumé:

In the frame of the PEGASO European project, we aim at promoting healthier lifestyles among teenagers focusing on the alimentary education and physical activity. This paper presents a novel concept of mobile food record developed following a multidisciplinary approach to innovate both the monitoring and the user experience. This mobile food record does not count calories but is focused on tracking dietary patterns and support the adoption of target behaviours. Moreover, the introduction of game mechanics developed through participatory design techniques aims at sustaining engagement in the long term.

A smartphone application to promote affective interaction and mental health
Conférence ArODES

Maurizio Caon, Leonardo Angelini, Stefano Carrino, Omar Abou Khaled, Elena Mugellini

Proceedings of the 17th International Conference on Human-Computer Interaction, HCI 2015: Human-Computer Interaction: Design and Evaluation, 2-7 August 2015, Los Angeles, CA, USA

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Résumé:

In this paper, we describe a smartphone application that aims at motivating users to use facial expressions. This has a twofold goal: to reintroduce the use of facial expressions as nonverbal means in the computer-mediated communication of emotions and to provide the opportunity for self-reflection about the personal emotional states while fostering smiles in order to improve mental wellbeing. This paper provides a description of the developed prototype and reports the results of a first observation study conducted during an interactive event.

CARP :
Conférence ArODES
correlation-based approach for researcher profiling

Hassan Noureddine, Iman Jarkass, Hussein Hazimeh, Omar Abou Khlaed, Elena Mugellini

Proceedings of SEKE 2015 : 27th International Conference on Software Engineering and Knowledge Engineering, 6-8 July 2015, Pittsburgh, USA

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Résumé:

The accelerating progress in science with the active role of the communication media – mainly the web – make person in front of a difficult task, in finding appropriate information during a brief time. In a narrower context, many researches were created in the expertise retrieval domain, as an interesting and complicated task for the scientific community, in face of this huge amount of data scattered across the web. Benefiting from the semantic web technologies and the efforts of data structuring, in this paper we propose a novel approach of correlation based profile building, by exploiting heterogynous web sources. The aim is to generate comprehensive and validated profiles about researchers and experts in the computer science domain.

Second screen applications for better television advertising
Conférence ArODES

Joël Dumoulin, Elena Mugellini, Diana Affi, Omar Abou Khaled, Marco Bertini, Alberto Del Bimbo

Proceedings of TVX'15: ACM International Conference on Interactive Experiences for TV and Online Video, 3-5 June 2015, Brussels, Belgium

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Résumé:

In this paper, the concept of second screen applications designed for better television advertising is proposed. To create a pleasant experience for users, the advertisements are moved from the television to second screens, delivered at the right time and integrated into fact sheets and small games in order to interest and amuse the users. This will allow to create a more personalized and interactive television advertising, without interrupting movies and TV shows.

SensiTV :
Conférence ArODES
smart emotional system for impaired people's TV

Diana Affi, Joël Dumoulin, Marco Bertini, Elena Mugellini, Omar Abou Khaled, A. del Bimbo

Proceedings of TVX'15: ACM International Conference on Interactive Experiences for TV and Online Video, 3-5 June 2015, Brussels, Belgium

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Résumé:

In this paper, an innovative solution is presented: a smart emotional system for impaired people's TV. It aims to accompany the cognitive information contained in a movie, with the affective content. The affect is then communicated to the movie viewers in ways compatible for people with hearing and/or visual impairments, to let them experience all of the sensations offered by the movie. To do so, emotion recognition techniques are used to classify movie scenes into seven basic emotions. These emotions are then represented, in realtime, while the movie is playing, to the viewers, using environmental lights, emotional subtitles and a second screen application that integrates vibrations, emoticons and background music.

Towards an anthropomorphic lamp for affective interaction
Conférence ArODES

Leonardo Angelini, Omar Abou Khaled, Maurizio Caon, Elena Mugellini, Denis Lalanne

Proceedings of the Ninth International Conference on Tangible, Embedded, and Embodied Interaction (TEI '15), 15-19 January 2015, Stanford, CA, USA

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Résumé:

This paper presents the concept of a lamp that allows displaying and collecting user’s emotional states. In particular, it displays the emotional information changing colors and facial expressions; in fact, the lamp is characterized by anthropomorphic form and behavior in order to make the interaction more natural and spontaneous. The user can interact with the lamp through tangible gestures typically used in social interactions by humans. Two different scenarios involving the use of the lamp as a companion and for computer-mediated communication are presented.

Tangible meets gestural :
Conférence ArODES
comparing and blending post-WIMP interaction paradigms

Leonardo Angelini, Denis Lalanne, Elise van den Hoven, Ali Mazalek, Omar Abou Khaled, Elena Mugellini

Proceedings of the Ninth International Conference on Tangible, Embedded, and Embodied Interaction (TEI '15), 15-19 January 2015, Stanford, CA, USA

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Résumé:

More and more objects of our everyday environment are becoming smart and connected, offering us new interaction possibilities. Tangible interaction and gestural interaction are promising communication means with these objects in this post-WIMP interaction era. Although based on different principles, they both exploit our body awareness and our skills to provide a richer and more intuitive interaction. Occasionally, when user gestures involve physical artifacts, tangible interaction and gestural interaction can blend into a new paradigm, i.e., tangible gesture interaction [5]. This workshop fosters the comparison among these different interaction paradigms and offers a unique opportunity to discuss their analogies and differences, as well as the definitions, boundaries, strengths, application domains and perspectives of tangible gesture interaction. Participants from different backgrounds are invited.

2014

Les qualités tangibles de la lampe anthropomorphique interactive
Conférence ArODES

Leonardo Angelini, Omar Abou Khaled, Elena Mugellini, Denis Lalanne

Actes de la conférence IHM'14, 28-31 octobre 2014, Villeneuve d'Ascq, France

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Résumé:

Dans cet article nous proposons une classification des systèmes tangibles selon les qualités tangibles présentes dans ces systèmes. Nous montrons un exemple d’analyse pour une lampe qui permet d’afficher et récolter des états émotionnels de l’utilisateur au travers d’interactions multimodales, basées sur des gestes tangibles du côté utilisateur, et des couleurs et des expressions faciales du côté lampe. En particulier, la lampe bénéfice d’une forme et d’un comportement anthropomorphiques pour rendre l’interaction plus naturelle et spontanée.

Une lampe anthropomorphique pour la communication des émotions
Conférence ArODES

Leonardo Angelini, Omar Abou Khaled, Maurizio Caon, Elena Mugellini, Denis Lalanne

Actes de la conférence IHM'14, 28-31 octobre 2014, Villeneuve d'Ascq, France

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Résumé:

Cet article présente la conception d’une lampe qui permet d’afficher et récolter des états émotionnels de l’utilisateur au travers d’interactions multimodales, basées sur des gestes tangibles du côté utilisateur, et des couleurs et des expressions faciales du côté lampe. En particulier, la lampe bénéfice d’une forme et d’un comportement anthropomorphiques pour rendre l’interaction plus naturelle et spontanée. Deux scénarios d’utilisation sont présentés, ainsi que l’implémentation de l’un d’eux.

Atelier of smart garments and accessories :
Conférence ArODES
second edition

Maurizio Caon, Elena Mugellini, Paolo Perego, Giuseppe Andreoni

Proceedings of the 2014 ACM International Symposium on Wearable Computers: Adjunct Program, ISWC '14 Adjunct, 13-17 September 2014, Seattle, WA, USA

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Résumé:

Technology is actually weaving itself into 'the fabric of everyday life' (as predicted by Weiser). Nowadays, computational systems can be embedded in garments or body accessory, such as clothes, shirts, eyeglasses, bracelets and watches. This new technological revolution is deeply changing the human life and society. The Atelier of Smart Garments and Accessories workshop aims to bring together researchers from the academia and the industry in order to establish a multidisciplinary community interested in discovering and exploring the challenges and opportunities coming from this technological revolution.

Wearable technologies for automotive user interfaces
Conférence ArODES

Maurizio Caon, Michele Tagliabue, Leonardo Angelini, Paolo Perego, Elena Mugellini, Giuseppe Andreoni

Proceedings of the AutomotiveUI '14: Adjunct Proceedings of the 6th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, 17-19 September 2014, Sattle, WA, USA

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Résumé:

Wearable technologies are spreading into human's everyday life. Smart bracelets, watches and glasses promise to provide us with ready-at-hand access to several information and interaction possibilities. What happens when these technologies enter the car? Are they a mere danger or can also offer information and interaction opportunities that can improve the vehicle inhabitants' user experience and safety? This workshop aims to discuss all the opportunities and dangers that such technologies not only are already bringing in nowadays vehicles, but could also bring in future semi-autonomous and autonomous vehicles.

Gesturing on the steering wheel :
Conférence ArODES
a user-elicited taxonomy

Leonardo Angelini, Frnacesco Carrino, Stefano Carrino, Maurizio Caon, Omar Abou Khaled, Jürgen Baumgartner, Andreas Sonderegger, Denis Lalanne, Elena Mugellini

Proceedings of the 6th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI '14, 17-19 September 2014, Seattle, WA, USA

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Résumé:

"Eyes on the road, hands on the wheel" is a crucial principle to be taken into account designing interactions for current in-vehicle interfaces. Gesture interaction is a promising modality that can be implemented following this principle in order to reduce driver distraction and increase safety. We present the results of a user elicitation for gestures performed on the surface of the steering wheel. We asked to 40 participants to elicit 6 gestures, for a total of 240 gestures. Based on the results of this experience, we derived a taxonomy of gestures performed on the steering wheel. The analysis of the results offers useful suggestions for the design of in-vehicle gestural interfaces based on this approach.

Hugginess :
Conférence ArODES
encouraging interpersonal touch through smart clothes

Leonardo Angelini, Omar Abou Khaled, Maurizio Caon, Elena Mugellini, Denis Lalanne

Proceedings of the 2014 ACM International Symposium on Wearable Computers: Adjunct Program, ISWC '14 Adjunct, 13-17 September 2014, Seattle, WA, USA

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Résumé:

Physical contact has an important role in human well-being. In this paper, we present Hugginess, a concept of interactive system that encourages people to hug by augmenting this gesture with digital information exchange. As a proof of concept, we developed two t-shirts that reciprocally send information to the hugged person through the conductive fabric.

Tailoring motivational mechanisms to engage teenagers in healthy life-style :
Conférence ArODES
a concept

Maurizio Caon, Stefano Carrino, Claudio L. Lafortuna, José C. E. Serrano, Neil S. Coulson, Marco Sacco, Omar Abou Khaled, Elena Mugellini

Proceedings of the 5th International Conference on Applied Human Factors and Ergonomics 2014, 19-23 July 2014, Kracow, Poland

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Résumé:

Overweight and obesity are the first leading risk related to nutrition for global deaths, in the last few years it outranked the famine. Obesity increases the risk of several debilitating, and deadly diseases, including diabetes, heart disease, and some cancers. Due to the many health risks associated with obesity, the financial burden that the treatment of this disease exercises on the European healthcare system is enormous. For this reason, the best strategy relies in prevention. In particular, the pervasiveness of technology can leverage an important advantage for the promotion of healthy behaviors in the new generations. This paper introduces PEGASO, a technological multidisciplinary project funded by the European Commission that aims at creating an ecosystem that can enable teenagers to adopt healthy habits leading to a healthy life-style. The ICT system plays an important role in the PEGASO ecosystem. This behavior change support system integrates a Virtual Individual Model that allows characterizing the physiological status, physical condition and the psychological status for each user. This allows the elaboration of tailored interventions aiming at promoting the adoption of healthy habits by the users. This paper describes this concept introducing the Virtual Individual Model and discusses the possible interventions related to the promotion of physical exercise and of healthy dietary habits. At the end of the paper, some indications about the future development of the PEGASO project are provided.

A Survey of datasets for human gesture recognition
Conférence ArODES

Simon Ruffieux, Denis Lalanne, Elena Mugellini, Omar Abou Khaled

Proceedings of the 6th International Conference HCI International 2014, 22-27 June 2014, Heraklion, Crete, Greece

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Résumé:

This paper presents a survey on datasets created for the field of gesture recognition. The main characteristics of the datasets are presented on two tables to provide researchers a clear and rapid access to the information. This paper also provides a comprehensive description of the datasets and discusses their general strengths and limitations. Guidelines for creation and selection of datasets for gesture recognition are proposed. This survey should be a key-access point for researchers looking to create or use datasets in the field of human gesture recognition.

Augmented reality treatment for phantom limb pain
Conférence ArODES

Francesco Carrino, Didier Rizzotti, Claudia Gheorghe, Patrick Kabusu Bakajuka, Frédérique Francescotti-Paquier, Elena Mugellini

Proceedings of the 6th International Conference, VAMR 2014, Held as Part of HCI International 2014, 22-27 June 2014, Heraklion, Crete, Greece

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Résumé:

Mirror therapy is used from many years to treat phantom limb pain in amputees. However, this approach presents several limitations that could be overcome using the possibilities of new technologies. In this paper we present a novel approach based on augmented reality, 3D tracking and 3D modeling to enhance the capabilities of the classic mirror therapy. The system was conceived to be integrated in a three steps treatment called “Graded motor imagery” that includes: limb laterality recognition, motor imagery and, finally, mirror therapy. Aiming at a future home care therapy, we chose to work with low-cost technologies studying their advantages and drawbacks. In this paper, we present the conception and a first qualitative evaluation of the developed system.

PEGASO :
Conférence ArODES
towards a life companion

Stefano Carrino, Maurizio Caon, Omar Abou Khaled, Giuseppe Andreoni, Elena Mugellini

Proceedings of the 5th International Conference, DHM 2014, Held as Part of HCI International 2014, 22-27 June 2014, Heraklion, Crete, Greece

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Résumé:

In the frame of the PEGASO European project, we aim at promoting healthier lifestyles focusing on the alimentary education and physical activity. This paper presents the concept of health companion as the main tool to inform and push the user towards a healthier lifestyle. This companion is an advanced interface that assists and entertains the user, providing him an adequate knowledge about alimentary and physical education. The companion is based on a knowledge model of the user and its behavior; it is composed of three main facets: is tailored to the user, is based on affective design and is designed to be a life companion.

Empathic TV experiences for visually and hearing impaired people using arousal modeling
Conférence ArODES

Joël Dumoulin, Maria Sokhn, Elena Mugellini, Omar Abou Khlaed, Marco Bertini, Alberto Del Bimbo

Proceedings of the 1st Workshop on Empathic Television Experiences (EmpaTeX 2014), 25-27 June 2014, Newcastle, England

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Résumé:

If new televisions are bringing more and more features in our living rooms, they are still lacking an important axis of the TV user experience: emotions. And this is particularly true for visually and hearing impaired people. Therefore, we want to find innovative ways to bring them emotions that are usually conveyed through sound and images, by taking advantage of arousal modeling of films. Such empathic TV experiences will give them the possibility to fully enjoy visual media.

Multimodal context modeling and classification using TBM
Conférence ArODES

Nour Charara, Maria Sokhn, Iman Jarkass, Omar Abou Khaled, Elena Mugellini

Proceedings of the IEEE International Conference on Electro/Information Technology, 5-7 June 2014, Milwaukee, WI, USA

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Résumé:

This paper presents a novel supervised method for context modeling and classification based on Transferable Belief Model (TBM). The task of context classification is to identify, among predefined context types, the one that is currently active in the video-surveillance footage of multipurpose halls. Context is spatially modeled by extracting five discriminative semantic features according to depth zones. These zones are provided by depth-based scene segmentation method. Using mathematical TBM tools, the structured semantic features are processed and the mass functions are modeled on three levels in order to propose classification. In addition to video document indexing and retrieval, this work can improve the machine vision capability in behavior analysis.

A persuasive system for obesity prevention in teenagers :
Conférence ArODES
a concept

Maurizio Caon, Stefano Carrino, Renata Guarnieri, Giuseppe Andreoni, Claudio L. Lafortuna, Omar Abou Khaled, Elena Mugellini

Proceedings of the 2nd International Workshop on Behavior Change Support Systems co-located with the 9th International Conference on Persuasive Technology (PERSUASIVE 2014), 22 May 2014, Padua, Italy

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Résumé:

In the frame of the PEGASO European project, we aim at creating an ecosystem that enables teenagers to easily adopt a healthy lifestyle. In this ecosystem, the persuasive ICT system plays a key role in motivating users to build healthy habits. The persuasive system is based on mobile technologies and provides tailored motivational mechanisms based on the information provided by the virtual individual model.

Conference organization using ontology based information correlation from multiple web resources
Conférence ArODES

Hassan Noureddine, I. Jarkass, Maria Sokhn, Omar Abou Khaled, Elena Mugellini

Proceedings of the LAAS 2014 - The 20th LAAS International Science Conference, 27-29 March 2014, Hadath, Liban

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Résumé:

Years of information pumping and exchanging across the web, making it saturated by data, especially in the scientific domain. Consequently, the (semi-)automatic applications become a necessity to find appropriate information in a brief time. Therefore, the Web witnessed the evolution of these applications with time. Despite this, the problem has not been fully solved with the presence of a large amount of conflicted and outdated data. In order to get more accurate and ranked results, it was interesting to correlate this information, especially with its existence within multiple sources. This is typically useful during setting up a conference, when we need to find information about social events and experts.

Context identification from video-surveillance scenes of multipurpose halls
Conférence ArODES

Nour Charara, I. Jarkass, Maria Sokhn, Omar Abou Khaled, Elena Mugellini

Proceedings of the LAAS 2014 - The 20th LAAS International Science Conference, Université libanaise, 27-29 March 2014, Hadath, Liban

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Résumé:

A novel method for multimodal context identification from video-surveillance footage of multipurpose halls is presented is this paper. After presenting a dedicated definition of ‘Context’ in computer vision systems, the goal is resumed by detecting the active context type among predefined ones. To this end, a spatial modeling of context is performed by extracting five discriminative semantic features according to depth zones. These zones are detected by depth-based scene segmentation method. These features are processed with the Transferable Belief Model (TBM) to propose a classification. Results show the validity of the method for context recognition.

Towards temporal saliency detection :
Conférence ArODES
better video understanding for Richer tv experiences

Joël Dumoulin, Elena Mugellini, Omar Abou Khaled, Marco Bertini, Alberto Del Bimbo

Proceedings of the ICDS 2014, the 8th International Conference on Digital Society, 23-27 March 2014, Barcelona, Spain

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Résumé:

More and more popular, Smart TVs and set-top boxes open new ways for richer experiences in our living rooms. But to offer richer and novel functionalities, a better understanding of the multimedia content is crucial. If many works try to automatically annotate videos at object level, or classify them, we think that investigating the emotions through the use of digital analysis and processing techniques will allow great TV experience improvements. With our work, we propose a temporal saliency detection approach capable of defining the most exciting parts of a video that will be of the most interest to the users. To identify the most interesting events, without performing their classification (in order to be independent from the video domain), we compute a time series of arousal (excitement level of the content), based on audio-visual features. Our goal is to merge this preliminary work with user emotions analysis, in order to create a multimodal system, allowing to bridge the gap between users’ needs and multimedia contents.

2013

Ubiquitous Interaction for Computer Mediated Communication of Emotions
Conférence ArODES

Maurizio Caon, Omar Abou Khaled, Elena Mugellini, Denis Lalanne, Leonardo Angelini

Proceedings of the 2013 Humaine Association Conference on Affective Computing and Intelligent Interaction, 2-5 September 2013, Geneva, Switzerland

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Résumé:

Social awareness streams limit the expressivity of emotions in computer mediated communication. In this demo, we present a system that allows sharing emotional states in a social group with multimodal ambient feedback in order to provide a more immersive and natural interaction experience.

ChAirGest :
Conférence ArODES
a challenge for multimodal mid-air gesture recognition for close HCI

Simon Ruffieux, Denis Lalanne, Elena Mugellini

Proceedings of the 15th ACM on International conference on multimodal interaction (ICMI'13), 9-13 December 2013, Sydney, Australia

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Résumé:

In this paper, we present a research oriented open challenge focusing on multimodal gesture spotting and recognition from continuous sequences in the context of close human-computer interaction. We contextually outline the added value of the proposed challenge by presenting most recent and popular challenges and corpora available in the field. Then we present the procedures for data collection, corpus creation and the tools that have been developed for participants. Finally we introduce a novel single performance metric that has been developed to quantitatively evaluate the spotting and recognition task with multiple sensors.

Opportunistic synergy :
Conférence ArODES
a classifier fusion engine for micro-gesture recognition

Leonardo Angelini, Francesco Carrino, Stefano Carrino, Maurizio Caon, Denis Lalanne, Omar Abou Khaled, Elena Mugellini

Proceedings of AutomotiveUI'13 : Automotive User Interfaces and Interactive Vehicular Applications, 28-30 October 2013, Eindhoven, Netherlands

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Résumé:

In this paper, we present a novel opportunistic paradigm for in-vehicle gesture recognition. This paradigm allows using two or more subsystems in a synergistic manner: they can work in parallel but the lack of some of them does not compromise the functioning of the whole system. In order to segment and recognize micro-gestures performed by the user on the steering wheel, we combine a wearable approach based on the electromyography of the user's forearm muscles, with an environmental approach based on pressure sensors integrated directly on the steering wheel. We present and analyze several fusion methods and gesture segmentation strategies. A prototype has been developed and evaluated with data from nine subjects. The results prove that the proposed opportunistic system performs equal or better than each stand-alone subsystem while increasing the interaction possibilities.

Designing a desirable smart bracelet for older adults
Conférence ArODES

Leonardo Angelini, Maurizio Caon, Stefano Carrino, Luc Bergeron, Nathalie Nyffeler, Mélanie Jean-Mairet, Elena Mugellini

Proceedings of the 2013 ACM conference on Pervasive and ubiquitous computing adjunct publication

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Résumé:

In this paper, we present the design process of a smart bracelet that aims at enhancing the life of elderly people. The bracelet acts as a personal assistant during the user's everyday life, monitoring the health status and alerting him or her about abnormal conditions, reminding medications and facilitating the everyday life in many outdoor and indoor activities.

A pervasive game to promote social offline interaction
Conférence ArODES

Maurizio Caon, Elena Mugellini, Omar Abou Khaled

Proceedings of UbiComp'13 Adjunct, 9-12 September 2013, Zurich, Switzerland

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Résumé:

Human relationships are migrating from the physical world to the virtual world. Pervasive games can be a valuable and enjoyable method to bring people back to the physical world. In this position paper, we present a concept for a pervasive game, which integrates some specific mechanisms aiming at promoting social offline interaction.

Tracking a screen and detecting its rate of change on 3-D video scenes of multipurpose halls
Conférence ArODES

Nour Charara, Maria Sokhn, Omar Abou Khaled, Elena Mugellini

Proceedings of the 3rd International Conference on Signal, Image Processing and Applications, 10-11 August 2013, Barcelona, Spain

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Résumé:

This paper presents an automatic approach to track a wide screen in a multipurpose hall video scene. Once the screen is located, this system also generates the temporal rate of change, using edge detection based method. Our approach adopts a scene segmentation algorithm that explores visual features (texture) and depth information to perform efficient screen localization. The cropped region which refers to the wide screen undergoes a salient visual cues extraction to retrieve the emphasized changes required in rate-of-change computation. In addition to video document indexing and retrieval, this work can improve the machine vision capability in behavior analysis and pattern recognition.

Context-aware multimodal sharing of emotions
Conférence ArODES

Maurizio Caon, Leonardo Angelini, Yong Yue, Omar Abou Khaled, Elena Mugellini

Proceedings of the 15th International Conference, HCI International 2013, 21-26 July 2013, Las Vegas, NV, USA

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Résumé:

Computer mediated interaction often lacks of expressivity, in particular for emotion communication. Therefore, we present a concept for context-aware multimodal sharing of emotions for human-to-computer-to-human interaction in social networks. The multimodal inputs and outputs of this system are distributed in a smart environment in order to grant a more immersive and natural interaction experience. The context information is used to improve the opportuneness and the quality of feedback. We implemented an evaluation scenario and we conducted an observation study during some events with the participants. We reported our considerations at the end of this paper.

WheelSense :
Conférence ArODES
enabling tangible gestures on the steering wheel for in-car natural interaction

Leonardo Angelini, Maurizio Caon, Francesco Carrino, Stefano Carrino, Denis Lalanne, Omar Abou Khaled, Elena Mugellini

Proceedings of the 15th International Conference, HCI International 2013, 21-26 July 2013, Las Vegas, NV, USA, Pt. II

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Résumé:

This paper presents WheelSense, a system for non-distracting and natural interaction with the In-Vehicle Information and communication System (IVIS). WheelSense embeds pressure sensors in the steering wheel in order to detect tangible gestures that the driver can perform on its surface. In this application, the driver can interact by means of four gestures that have been designed to allow the execution of secondary tasks without leaving the hands from the steering wheel. Thus, the proposed interface aims at minimizing the distraction of the driver from the primary task. Eight users tested the proposed system in an evaluation composed of three phases: gesture recognition test, gesture recognition test while driving in a simulated environment and usability questionnaire. The results show that the accuracy rate is 87% and 82% while driving. The system usability scale scored 84 points out of 100.

Functional gestures for human-environment interaction
Conférence ArODES

Stefano Carrino, Maurizio Caon, Omar Abou Khaled, Rolf Ingold, Elena Mugellini

Proceedings of the 15th International Conference on Human-Computer Interaction, HCI International 2013, 21-26 July 2013, Las Vegas, NV, USA

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Résumé:

In this paper, we describe an opportunistic model for human-environment interaction. Such model is conceived to adapt the expressivity of a small lexicon of gestures through the use of generic functional gestures lowering the cognitive load on the user and reducing the system complexity. An interactive entity is modeled as a finite-state machine. A functional gesture is defined as the semantic meaning of an event that triggers a state transition and not as the movement to be performed. An interaction scenario has been designed in order to evaluate the features of the proposed model and to investigate how its application can enhance a post-WIMP human-environment interaction.

A developer-oriented visual model for upper-body gesture characterization
Conférence ArODES

Simon Ruffieux, Denis Lalanne, Omar Abou Khaled, Elena Mugellini

Human-Computer Interaction: Towards Intelligent and Implicit Interaction : Proceedings of the 15th International Conference, HCI International 2013, 21-26 July 2013, Las Vegas, NV, USA

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Résumé:

This paper focuses on a facilitated and intuitive representation of upper-body gestures for developers. The representation is based on the user motion parameters, particularly the rotational and translational components of body segments during a gesture. The developed static representation aims to provide a rapid visualization of the complexity for each body segment involved in the gesture for static representations. The model and algorithms used to produce the representation have been applied to a dataset of 10 representative gestures to illustrate the model.

Gesture vs. gesticulation :
Conférence ArODES
a test protocol

Francesco Carrino, Antonio Ridi, Rolf Ingold, Omar Abou Khaled, Elena Mugellini

Human-Computer Interaction: Towards Intelligent and Implicit Interaction : Proceedings of the 15th International Conference, HCI International 2013, 21-26 July 2013, Las Vegas, NV, USA, part IV

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Résumé:

In the last years, gesture recognition has gained increased attention in Human-Computer Interaction community. However, gesture segmentation, which is one of the most challenging tasks in gesture recognition applications, is still an open issue. Gesture segmentation has two main objectives: first, detecting when a gesture begins and ends; second, recognizing whether a gesture is meant to be meaningful for the machine or is a non-command gesture (such as gesticulation). This paper proposes a novel test protocol for the evaluation of different techniques separating command gestures from non-command gestures. Finally, we show how we adapted adopted our test protocol to design a touchless, always available interaction system, in which the user communicates directly with the computer through a wearable and “intimate” interface based on electromyographic signals.

Kinesiologic electromyography for activity recognition
Conférence ArODES

Maurizio Caon, Francesco Carrino, Antonio Ridi, Yong Yue, Omar Abou Khaled, Elena Mugellini

Proceedings of PETRA '13: Proceedings of the 6th International Conference on PErvasive Technologies Related to Assistive Environments, 29-31 May 2013, Rhodes, Greece

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Résumé:

This paper presents a wearable system based on kinesiologic electromyography that recognizes the user activity in real time. In particular, the system recognizes the following five activities: "walking", "running", "cycling", "sitting" and "standing". We conducted a study in order to select the opportune muscles and sensors placement. Furthermore, we evaluated the system conducting two analyses: impersonal and subjective. The impersonal analysis evaluated the system behavior when it was trained on several users' data; on the opposite, the subjective analysis evaluated the system when it was specialized on a single subject data. In the impersonal analysis, the accuracy rate was 96.8% for the 10-fold cross-validation and 91.8% for the leave one subject out. The system accuracy rate for the subjective analysis was 99.4%.

Enhanced conference organization based on correlation of web information and ontology based expertise search
Conférence ArODES

Hassan Noureddine, Maria Sokhn, Iman Jarkass, Elena Mugellini, Omar Abou Khaled

International Conference on Information Retrieval and Knowledge Management (ICIRKM 2013), Venice, Italie Avril 2013

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Résumé:

From the importance of the conference and its constructive role in the studies discussion, there must be a strong organization that allows the exploitation of the discussions in opening new horizons. The vast amount of information scattered across the web, make it difficult to find experts, who can play a prominent role in organizing conferences. In this paper we proposed a new approach of extracting researchers’ information from various Web resources and correlating them in order to confirm their correctness. As a validator of this approach, we propose a service that will be useful to set up a conference. Its main objective is to find appropriate experts, as well as the social events for a conference. For this application we us Semantic Web technologies like RDF and ontology to represent the confirmed information, which are linked to another ontology (skills ontology) that are used to present and compute the expertise.

Optimization of an electromyography-based activity recognition system
Conférence ArODES

Francesco Carrino, Antonio Ridi, Maurizio Caon, Omar Abou Khaled, Elena Mugellini

Proceedings of the 2013 ISSNIP Biosignals and Biorobotics Conference: Biosignals and Robotics for Better and Safer Living (BRC), 18-20 February 2013, Rio de Janeiro, Brazil

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Résumé:

We present the optimization of a wearable surface electromyography-based system for activity recognition in relation with the number of sensed muscles. The muscles of interest were four: Gastrocnemius, Tibialis Anterior, Vastus Lateralis and Erector Spinae. In particular, the system has been tested for the recognition of five everyday activities: “walking”, “running”, “cycling”, “sitting” and “standing”. We conducted two types of analysis: impersonal and subjective. The impersonal analysis aimed to evaluate the recognition rate when the system was trained over different users. On the opposite, during the subjective analysis the system has been trained using the data coming from a single user. Moreover, we computed the relative computational costs. Among the results, we can highlight that using the signals sensed from three opportunely selected muscles (Gastrocnemius, Tibialis Anterior and Vastus Lateralis) instead of four did not entail a sensible loss of accuracy, whereas it reduced the computational cost of the 24.1 %. In particular, sensing four and three muscles we achieved an activity recognition accuracy higher than 96% for the impersonal analysis; for the subjective analysis, the attained accuracy was higher than 99%.

Democratizing 3D dynamic gestures recognition
Conférence ArODES

Maurizio Caon, Yong Yue, Julien Tscherrig, Omar Abou Khaled, Elena Mugellini

Proceedings of the 2013 1st IEEE Workshop on User-Centered Computer Vision (UCCV), 15-17 January 2013, Clearwater Beach, FL, USA

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Résumé:

Developing vision-based 3D gestures recognition systems requires strong expertise and knowledge in computer vision and machine learning techniques. As human-computer interaction researchers do not generally have a thorough knowledge of these techniques, we developed Gesta. Gesta is a tool that enables non-experts in vision computing and artificial intelligence techniques to rapidly develop a 3D gestures recognition system prototype and to support the gesture design process. This tool works with up to two Microsoft Kinects, and integrates the depth cameras calibration algorithm and the hidden Markov models classifier. The users can manage these complex functions through a simple graphical user interface, even if they do not have any expertise in computer vision and machine learning domains. A usability test with 12 researchers with experience in human-computer interaction has been conducted in order to evaluate the overall usability of this tool. Results demonstrate that the testers appreciated the Gesta tool which scored 88.9 points out of 100 in the Brooke's system usability scale.

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