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Omar Abou Khaled

Omar Abou Khaled
University of Applied Sciences and Arts, Western Switzerland, Fribourg · HumanTech Institute

PhD

About

312
Publications
52,824
Reads
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1,642
Citations
Citations since 2016
126 Research Items
1115 Citations
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Introduction
Omar Abou Khaled is Professor in computer science at HES-SO campus Fribourg (EIA-FR). He holds a PhD in Computer Science received from the Perception and Automatic Control Group of HEUDIASYC Laboratory of « Université de Technologie de Compiègne », and a Master in Computer Science from the same university. Since 1996 he has been working as research assistant in the MEDIA group of the Theoretical Computer Science Laboratory of EPFL (Ecole Polytechnique Fédérale de Lausanne) in the field of Educat
Additional affiliations
September 2000 - present
Université de Fribourg
Position
  • Professor (Assistant)
October 1999 - present
University of Applied Sciences and Arts Western Switzerland
Position
  • Professor (Full)

Publications

Publications (312)
Conference Paper
Full-text available
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 studen...
Conference Paper
Search engines are among the most popular web services on the World Wide Web. They facilitate the process of finding information using a query-result mechanism. However, results returned by search engines contain many duplications. In this paper, we introduce a new content-type-based similarity computation method to address this problem. Our approa...
Article
Full-text available
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 physiologi...
Article
Full-text available
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 explore...
Article
Full-text available
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 recommen...
Article
Full-text available
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...
Article
Full-text available
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...
Chapter
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...
Conference Paper
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...
Conference Paper
Takeover scenarios in conditionally autonomous driving are critical and should be conducted optimally in order to ensure the driver's safety. Using Machine Learning, we propose a model able to predict the takeover quality, an aggregation of two widely used takeover metrics: reaction time and maximum steering wheel angle. The prediction is made usin...
Chapter
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 studen...
Article
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...
Article
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-fr...
Conference Paper
Full-text available
Cet article porte sur la conception d'un compagnon digital pour aider à l'orchestration d'un jeu. Intégré dans un jeu (Geome) qui allie éléments tangibles et numériques, ce compagnon repose sur la collecte de traces multimodales mises à disposition du maître du jeu et des joueurs. Conçu selon une recherche de type orientée par la conception, le pro...
Poster
Full-text available
Pour cette démonstration nous proposons le jeu Geome, qui traite du rapport de l'Homme à la nature, et qui se joue dans un environnement mixte (nu-mérique et tangible), au Musée de la Nature dans le Valais Suisse dans un con-texte de visite scolaire (12-15 ans). Afin d'aider le maitre du jeu à orchestrer la partie, nous présentons également DigitCo...
Chapter
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 gap...
Chapter
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-ma...
Chapter
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...
Chapter
Full-text available
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 sociocul...
Chapter
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 wi...
Chapter
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...
Chapter
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 NL...
Chapter
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 psy...
Article
Full-text available
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 increas...
Chapter
Full-text available
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 psyc...
Chapter
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...
Article
Background: Chronic pain is a complex problem for many older adults that affects both physical functioning and psychological well-being. Mobile health (mHealth) technologies have shown promise in supporting older persons in managing chronic conditions. Cognitive behavior therapy is recommended for older people with chronic pain. However, web-based...
Article
Full-text available
Search engines are among the most popular web services on the World Wide Web. They facilitate the process of finding information using a query-result mechanism. However, results returned by search engines contain a lot of duplications. For instance, when a user searches for a query q on Google, he will get n number of links divided into m number of...
Preprint
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-fr...
Conference Paper
Full-text available
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 indiv...
Conference Paper
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 c...
Article
Full-text available
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 l...
Conference Paper
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 tak...
Article
Full-text available
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...
Chapter
Full-text available
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...
Chapter
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: fi...
Chapter
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 addition...
Chapter
Full-text available
The population of people age 65 or over is increasing especially in Europe [3]. Granting to this target population a longer and healthier life is paramount for the European Community. In the context of the H2020 EU funded project “NESTORE” [11], an embodied and ubiquitous e-coach is being developed seeking to change the lifestyle of seniors in diff...
Conference Paper
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...
Article
Full-text available
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 aim...
Chapter
Full-text available
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 s...
Chapter
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 vi...
Chapter
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 ba...
Chapter
The digitalization of humanitarian supply chains allows overcoming one of the greatest difficulties faced by NGOs and governments in managing health equipment in crisis situations: the visibility of stocks and consumption at the end of the chain. This paper presents the design process of the health equipment inventory management system developed to...
Chapter
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 pro...
Chapter
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 move...
Conference Paper
Autonomous vehicles are developing rapidly and will lead to a significant change in the driver's role: he/she will have to move from the role of actor to the role of supervisor. Indeed, the driver will soon be able to perform a secondary task but he/she must be able to take over control in the event of a critical situation that is not managed by th...
Conference Paper
Semi-autonomous driving is rapidly evolving and one of its major issues is the reduction of the driver's attention to his/her environment. After a brief study of current interactions increasing this situational awareness, and more particularly haptic interactions, this article proposes the use of vibrations in the seat. Vibrations, due to their loc...
Conference Paper
Virtual Reality (VR) has three main advantages: allowing safe simulations, experimenting different conditions for the same scenario, and providing the perfect replicability of the scenarios. We present a feasibility study on the use of VR and VR immersive headsets to assist young adults (10-18) with intellectual disabilities in learning new skills....
Article
Full-text available
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 r...
Conference Paper
Full-text available
Recent years show an increasing popularity of chatbots, with latest efforts aiming to make them more empathic and human-like, 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 provi...
Conference Paper
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...
Conference Paper
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 the...
Conference Paper
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 fro...
Conference Paper
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 co...
Article
Full-text available
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 treadmi...
Conference Paper
Full-text available
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 ac...
Chapter
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, saf...
Conference Paper
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...
Article
We present a novel approach for the analysis of human behaviors in order to provide characterization of apparent events in the video surveillance scenes of conference halls. A topic model is used for activity analysis and for normal model learning. In particular, spatiotemporal features that carry trajectory, direction, and shape information of co-...