<p>With the advents in hardware techniques and mobile computing powers, Augmented Reality (AR) has been promising in various areas of our everyday life and work. By superimposing virtual assets onto the real world, the boundary between the digital and physical spaces has been significantly blurred, which bridges a large amount of digital augmentation and intelligence with the surroundings of the physical reality. Meanwhile, thanks to the increasing developments of Artificial Intelligence (AI) perception algorithms such as object detection, scene reconstruction, and human tracking, the dynamic behaviors of digital AR content have extensively been associated with the physical contexts of both humans and environments. This context-awareness enabled by the emerging techniques enriches the potential interaction modalities of AR experiences and improves the intuitiveness and effectiveness of the digital augmentation delivered to the consumers. Therefore, researchers are gradually motivated to include more contextual information in the AR domain to create novel AR experiences used for augmenting their activities in the physical world.</p> <p>    </p> <p>On a broader level, our work in this thesis focuses on novel designs and modalities that combine contextual information with AR content behaviors in context-aware AR experiences. In particular, we design the AR experiences by inspecting different types of contexts from the real world, namely 1) human actions, 2) physical entities, and 3) interactions between humans and physical environments. To this end, we explore 1) software and hardware modules, and conceptual models that perceive and interpret the contexts required by the AR experiences, and 2) supportive authoring tools and interfaces that enable users and designers to define the associations of the AR contents and the interaction modalities leveraging the contextual information. In this thesis, we mainly study the following workflows: 1) designing adaptive AR tutoring systems for human-machine-interactions, 2) customizing human-involved context-aware AR applications, 3) authoring shareable semantic-aware AR experiences, and 4) enabling hand-object-interaction datasets collection for scalable context-aware AR application deployment. We further develop the enabling techniques and algorithms including 1) an adaptation model that adaptively vary the AR tutoring elements based on the real-time learner's interactions with the physical machines, 2) a customized video-see-through AR headset for pervasive human-activity detecting, 3) a semantic adaptation model that adjusts the spatial relationships of the AR contents according to the semantic understanding of different physical entities and environments, and 4) an AR-based interface that empowers novice users to collect high-quality datasets used for training user- and cite-specific networks in hand-object-interaction-aware AR applications.</p> <p><br></p> <p>Takeaways from the research series include 1) the usage of the modern AI modules effectively enlarges both the spatial and contextual scalability of AR experiences, and 2) the design of the authoring systems and interfaces lowers the barrier for end-users and domain experts to leverage AI outputs in the creation of AR experiences that are tailored for target users. We conclude that involving AI techniques in both the creation and implementation stages of AR applications is crucial to building an intelligent, adaptive, and scalable ecosystem of context-aware AR applications.</p>

Este trabalho explora a gerência de segurança e cooperação de aplicações em sistemas distribuídos móveis. Neste contexto, é feito um estudo sobre os diferentes middlewares para ambientes móveis (mobile middleware): suas capacidades de enfrentar os desafios da mobilidade e da segurança. As análises do estudo mostram que esses middlewares devem possuir características que lhes permitem uma melhor adaptação às necessidades das aplicações e à natureza dos ambientes móveis. Os middlewares existentes pouco abordam a questão da segurança. A segurança ainda é um problema complexo que deve ser gerido em todos os níveis de um sistema distribuído móvel, incluindo novos mecanismos. Com base nessa análise, foi desenvolvido um modelo de gerência de segurança que implementa um mecanismo de autenticação mútua, confidencialidade, detecção de intruso e controle de acesso em ambientes móveis. O objetivo é garantir a confiabilidade, a disponibilidade de serviços e a privacidade do usuário através da tecnologia PET - Privacy-Enhancing Tecnologies. A idéia é fundamentada em agentes interceptadores e autoridades de segurança que distribuem tíquetes de segurança e controlam o acesso a recursos e espaços de tuple do ambiente. O estudo de caso apresentou resultados satisfatórios que permitem julgar a pertinência do modelo proposto. O modelo será integrado a um sistema de e-saúde. / The work exploits the security management and the cooperation of applications in mobile distributed systems. In this context a study of different mobile middleware is made. The study examines their capacities to face the challenges of mobility and security issues. The analysis shows that the existing middleware has very few approaches on security problems; security is still a complex issue to be managed in all the levels of mobile distributed system including new mechanisms. Based on this analysis, a security management model is developed that implements a mechanism for mutual authentication, confidentiality, intrusion detection, access control of mobile agents in mobile environments, ensures services availability and user privacy, through technology PET (Privacy-Enhancing Technologies). The idea is based on interceptor agents and security authorities that distribute security tickets and control the access to resources and Tuple spaces in mobile environment. The proposed model presents good performance and is integrated to an e-health system: Relationship Management with Chronic Patient GRPC.

Este trabalho de pesquisa aprofunda o conhecimento associado aos sistemas de automação modernos baseados em redes de controle LonWorks®, visando torná-los mais facilmente utilizáveis como meios de implementar ambientes pervasivos. Para tanto, foi proposto um modelo de relacionamento dinamicamente reconfigurável entre dispositivos de uma rede de controle, que permite conferir a um sistema de automação distribuído algumas características previstas na computação pervasiva. É proposta uma extensão do modelo de objetos na tecnologia LonWorks®, utilizando conceitos de middleware, de forma a conferir aos módulos da rede a capacidade de auto-gerenciamento dinâmico, de modo a modificar os seus comportamentos à medida que novas situações sejam identificadas. A extensão proposta foi aplicada experimentalmente, visando a sua validação e refinamento, como o sistema de comunicação interno de uma empresa, substituindo os PABXs convencionais, considerado em maiores detalhes. Constatou-se a impossibilidade de sua implementação com a tecnologia LonWorks® atual, que utiliza conexões estáticas, necessitando de um operador ou integrador para configurá-las, caso não seja adotada a extensão proposta. Como estudo de caso o projeto de um PABX baseado na tecnologia LonWorks® foi avaliado e discutido, contribuindo para a geração de uma nova metodologia de concepção de sistemas de automação que possam atender algumas propostas previstas na computação pervasiva. É proposto integrar a Tecnologia da Informação e Comunicação, com as ações e os comportamentos convencionais que as pessoas apresentam. Essa metodologia proposta supera os desafios de projetistas de sistemas de automação de ambientes, em especial os prediais, e obtém integração entre processos de forma que as pessoas não percebam que estão interagindo com um computador, cuja presença deverá cada vez mais se tornar onipresente. Além de facultar interfaces fáceis e naturais, tem-se também a incorporação dos conceitos da computação sensível a contexto nos sistemas de automação. / Pervasive or ubiquitous computing, proposes the integration between the information and communication technology with the actions and common behaviors presented by people. One of the challenges that it imposes to the environmental automation systems developers, specially building automation developers, is that this integration is processed in such a way that people do not realize they are interacting with a computer, thus its presence becomes omnipresent. Besides the need of an easy and natural interface, there is also the need to incorporate the sensitive computing context to the automation systems. The current control networks utilized in automation systems, building, home and industrial control do not show resources that support the requirements of pervasive computing. This research intend to improve the knowledge associated to modern automation systems, based on LonWorks® control networks, viewing to make them more easily usable as ways to implement pervasive environments. For that, a dynamically settable relationship model was proposed between the intelligent devices of a control network, which allows providing some foreseen characteristics on pervasive computing in a distributed automation system. A LonWorks® technology object model extension is proposed, using middleware concepts, in a dynamic way, to modify behaviors when new situations are identified. The proposed extension was experimentally applied to a few use cases, aiming at its validation and refinement, such as the internal communication of a company, which replaces the usual PABX, which was considered in greater detail. The impossibility of its implementation was found with the current technology, without the use of the proposed extension. Those cases were evaluated and discussed, contributing to a new automation system concept technology that can support provided proposals on pervasive computing.

Este trabalho explora a gerência de segurança e cooperação de aplicações em sistemas distribuídos móveis. Neste contexto, é feito um estudo sobre os diferentes middlewares para ambientes móveis (mobile middleware): suas capacidades de enfrentar os desafios da mobilidade e da segurança. As análises do estudo mostram que esses middlewares devem possuir características que lhes permitem uma melhor adaptação às necessidades das aplicações e à natureza dos ambientes móveis. Os middlewares existentes pouco abordam a questão da segurança. A segurança ainda é um problema complexo que deve ser gerido em todos os níveis de um sistema distribuído móvel, incluindo novos mecanismos. Com base nessa análise, foi desenvolvido um modelo de gerência de segurança que implementa um mecanismo de autenticação mútua, confidencialidade, detecção de intruso e controle de acesso em ambientes móveis. O objetivo é garantir a confiabilidade, a disponibilidade de serviços e a privacidade do usuário através da tecnologia PET - Privacy-Enhancing Tecnologies. A idéia é fundamentada em agentes interceptadores e autoridades de segurança que distribuem tíquetes de segurança e controlam o acesso a recursos e espaços de tuple do ambiente. O estudo de caso apresentou resultados satisfatórios que permitem julgar a pertinência do modelo proposto. O modelo será integrado a um sistema de e-saúde. / The work exploits the security management and the cooperation of applications in mobile distributed systems. In this context a study of different mobile middleware is made. The study examines their capacities to face the challenges of mobility and security issues. The analysis shows that the existing middleware has very few approaches on security problems; security is still a complex issue to be managed in all the levels of mobile distributed system including new mechanisms. Based on this analysis, a security management model is developed that implements a mechanism for mutual authentication, confidentiality, intrusion detection, access control of mobile agents in mobile environments, ensures services availability and user privacy, through technology PET (Privacy-Enhancing Technologies). The idea is based on interceptor agents and security authorities that distribute security tickets and control the access to resources and Tuple spaces in mobile environment. The proposed model presents good performance and is integrated to an e-health system: Relationship Management with Chronic Patient GRPC.

Este trabalho de pesquisa aprofunda o conhecimento associado aos sistemas de automação modernos baseados em redes de controle LonWorks®, visando torná-los mais facilmente utilizáveis como meios de implementar ambientes pervasivos. Para tanto, foi proposto um modelo de relacionamento dinamicamente reconfigurável entre dispositivos de uma rede de controle, que permite conferir a um sistema de automação distribuído algumas características previstas na computação pervasiva. É proposta uma extensão do modelo de objetos na tecnologia LonWorks®, utilizando conceitos de middleware, de forma a conferir aos módulos da rede a capacidade de auto-gerenciamento dinâmico, de modo a modificar os seus comportamentos à medida que novas situações sejam identificadas. A extensão proposta foi aplicada experimentalmente, visando a sua validação e refinamento, como o sistema de comunicação interno de uma empresa, substituindo os PABXs convencionais, considerado em maiores detalhes. Constatou-se a impossibilidade de sua implementação com a tecnologia LonWorks® atual, que utiliza conexões estáticas, necessitando de um operador ou integrador para configurá-las, caso não seja adotada a extensão proposta. Como estudo de caso o projeto de um PABX baseado na tecnologia LonWorks® foi avaliado e discutido, contribuindo para a geração de uma nova metodologia de concepção de sistemas de automação que possam atender algumas propostas previstas na computação pervasiva. É proposto integrar a Tecnologia da Informação e Comunicação, com as ações e os comportamentos convencionais que as pessoas apresentam. Essa metodologia proposta supera os desafios de projetistas de sistemas de automação de ambientes, em especial os prediais, e obtém integração entre processos de forma que as pessoas não percebam que estão interagindo com um computador, cuja presença deverá cada vez mais se tornar onipresente. Além de facultar interfaces fáceis e naturais, tem-se também a incorporação dos conceitos da computação sensível a contexto nos sistemas de automação. / Pervasive or ubiquitous computing, proposes the integration between the information and communication technology with the actions and common behaviors presented by people. One of the challenges that it imposes to the environmental automation systems developers, specially building automation developers, is that this integration is processed in such a way that people do not realize they are interacting with a computer, thus its presence becomes omnipresent. Besides the need of an easy and natural interface, there is also the need to incorporate the sensitive computing context to the automation systems. The current control networks utilized in automation systems, building, home and industrial control do not show resources that support the requirements of pervasive computing. This research intend to improve the knowledge associated to modern automation systems, based on LonWorks® control networks, viewing to make them more easily usable as ways to implement pervasive environments. For that, a dynamically settable relationship model was proposed between the intelligent devices of a control network, which allows providing some foreseen characteristics on pervasive computing in a distributed automation system. A LonWorks® technology object model extension is proposed, using middleware concepts, in a dynamic way, to modify behaviors when new situations are identified. The proposed extension was experimentally applied to a few use cases, aiming at its validation and refinement, such as the internal communication of a company, which replaces the usual PABX, which was considered in greater detail. The impossibility of its implementation was found with the current technology, without the use of the proposed extension. Those cases were evaluated and discussed, contributing to a new automation system concept technology that can support provided proposals on pervasive computing.

Systems populating the Ubiquitous Computing environment are characterized by an often extreme level of heterogeneity at different layers which prevents their seamless interoperability. In this environment, heterogeneous protocols would cooperate to reach some common goal even though they meet dynamically and do not have a priori knowledge of each other. Although numerous efforts have been done in the literature, the automated and run-time interoperability is still an open challenge for such environment. Therefore, this thesis focuses on overcoming the interoperability problem between heterogeneous protocols in the Ubiquitous Computing. In particular, we aim at providing a means to drop the interoperability barriers by automatically eliciting a way for the protocols to interact. The solution we propose is the automated synthesis of emerging mediating connectors (also called mediators or connectors). Specifically, we concentrate our efforts to: (i) devising AMAzING, a process to synthesize mediators, (ii) characterizing protocol mismatches and related mediator patterns, and (iii) designing MediatorS, a theory of mediating connectors. The theory, and the process, are put in practice by applying them to a real world application, and have been adopted by the European Research Project CONNECT.

<p>This thesis presents a set of concepts and a general design approach for designing Mixed Reality environments based on the idea that the physical (real) world and the virtual (digital) world are equally important and share many properties. Focus is on the design of a technology infrastructure intended to relieve people from some of the extra efforts currently needed when performing activities that make heavy use of both worlds. An important part of the proposed infrastructure is the idea of creating Physical-Virtual Artefacts, objects manifested in the physical and the virtual world at the same time.</p><p>The presented work challenges the common view of Human-Computer Interaction as a research discipline mainly dealing with the design of “user interfaces” by proposing an alternative or complementary view, a physical-virtual design perspective, abstracting away the user interface, leaving only physical and virtual objects. There are at least three motives for adopting such a design perspective: 1) people well acquainted with specific (physical and virtual) environments are typically more concerned with the manipulation of (physical and virtual) objects than the user interface through which they are accessed. 2) Such a design stance facilitates the conceptualisation of objects that bridge the gap between the physical and the virtual world. 3) Many physical and virtual objects are manifested in both worlds already today. The existing conceptual link between these physical and virtual objects has only to be complemented with causal relations in order to reduce the costs in crossing the border between the physical and the virtual world.</p><p>A range of concepts are defined and discussed at length in order to frame the design space, including<i> physical-virtual environment gap, physical-virtual activity, physical-virtual artefact, </i>and<i> physical-virtual environment</i>.</p><p>Two conceptual models of physical-virtual space are presented as a result of adopting the physical-virtual design perspective: for the analysis of object logistics in the context of physical-virtual activities, and for describing structural properties of physical-virtual space respectively. A prototype system offering some degree of physical-virtual infrastructure is also presented.</p>

This thesis presents a set of concepts and a general design approach for designing Mixed Reality environments based on the idea that the physical (real) world and the virtual (digital) world are equally important and share many properties. Focus is on the design of a technology infrastructure intended to relieve people from some of the extra efforts currently needed when performing activities that make heavy use of both worlds. An important part of the proposed infrastructure is the idea of creating Physical-Virtual Artefacts, objects manifested in the physical and the virtual world at the same time. The presented work challenges the common view of Human-Computer Interaction as a research discipline mainly dealing with the design of “user interfaces” by proposing an alternative or complementary view, a physical-virtual design perspective, abstracting away the user interface, leaving only physical and virtual objects. There are at least three motives for adopting such a design perspective: 1) people well acquainted with specific (physical and virtual) environments are typically more concerned with the manipulation of (physical and virtual) objects than the user interface through which they are accessed. 2) Such a design stance facilitates the conceptualisation of objects that bridge the gap between the physical and the virtual world. 3) Many physical and virtual objects are manifested in both worlds already today. The existing conceptual link between these physical and virtual objects has only to be complemented with causal relations in order to reduce the costs in crossing the border between the physical and the virtual world. A range of concepts are defined and discussed at length in order to frame the design space, including physical-virtual environment gap, physical-virtual activity, physical-virtual artefact, and physical-virtual environment. Two conceptual models of physical-virtual space are presented as a result of adopting the physical-virtual design perspective: for the analysis of object logistics in the context of physical-virtual activities, and for describing structural properties of physical-virtual space respectively. A prototype system offering some degree of physical-virtual infrastructure is also presented.

Context-aware pervasive computing has attracted a significant research interest from both academy and industry worldwide. It covers a broad range of applications that support many manufacturing and daily life activities. For instance, industrial robots detect the changes of the working environment in the factory to adapt their operations to the requirements. Automotive control systems may observe other vehicles, detect obstacles, and monitor the essence level or the air quality in order to warn the drivers in case of emergency. Another example is power-aware embedded systems that need to work based on current power/energy availability since power consumption is an important issue. Those kinds of systems can also be considered as smart applications. In practice, successful implementation and deployment of context-aware systems depend on the mechanism to recognize and react to variabilities happening in the environment. In other words, we need a well-defined and efficient adaptation approach so that the systems' behavior can be dynamically customized at runtime. Moreover, concurrency should be exploited to improve the performance and responsiveness of the systems. All those requirements, along with the need for safety, dependability, and reliability pose a big challenge for developers.In this thesis, we propose a novel programming language called INI, which supports both event-based and rule-based programming paradigms and is suitable for building concurrent and context-aware reactive applications. In our language, both events and rules can be defined explicitly, in a stand-alone way or in combination. Events in INI run in parallel (synchronously or asynchronously) in order to handle multiple tasks concurrently and may trigger the actions defined in rules. Besides, events can interact with the execution environment to adjust their behavior if necessary and respond to unpredictable changes. We apply INI in both academic and industrial case studies, namely an object tracking program running on the humanoid robot Nao and a M2M gateway. This demonstrates the soundness of our approach as well as INI's capabilities for constructing context-aware systems. Additionally, since context-aware programs are wide applicable and more complex than regular ones, this poses a higher demand for quality assurance with those kinds of applications. Therefore, we formalize several aspects of INI, including its type system and operational semantics. Furthermore, we develop a tool called INICheck, which can convert a significant subset of INI to Promela, the input modeling language of the model checker SPIN. Hence, SPIN can be applied to verify properties or constraints that need to be satisfied by INI programs. Our tool allows the programmers to have insurance on their code and its behavior.

Σήμερα, βρισκόμαστε ήδη στο στάδιο μετάβασης από τις παραδοσιακές επιτραπέζιες υπολογιστικές τεχνολογίες στα διάχυτα (ubiquitous) υπολογιστικά περιβάλλοντα που θα μας υποστηρίζουν σχεδόν σε κάθε καθημερινή μας λειτουργία ή δραστηριότητα. Παράλληλα, υπάρχει μία αυξανόμενη τάση για τοποθέτηση του χρήστη στο κέντρο των υπηρεσιών. Αυτό σημαίνει ότι οι υπηρεσίες θα προσαρμόζονται με βάση το στενό και ευρύτερο περιβάλλον διαβίωσης (context), τις ανάγκες και τις προτιμήσεις των χρηστών. Δύο από τις βασικότερες έννοιες στις οποίες βασίζεται η προσφορά διάχυτων εξατομικευμένων υπηρεσιών είναι η γνώση πλαισίου (context awareness) και η μοντελοποίηση χρηστών (user modeling). Η έλευση του διάχυτου υπολογισμού και η χρησιμοποίηση της διάχυτης μοντελοποίησης χρηστών (ubiquitous user modeling) έχει δημιουργήσει νέες προσδοκίες και προκλήσεις για την παροχή εξατομικευμένων υπηρεσιών σε πολλούς τομείς εφαρμογών μεταξύ των οποίων είναι και ο τομέας της υγείας. Η ιατρική αντιμετώπιση αλλάζει πλέον κατεύθυνση και γίνεται προστατευτική, προληπτική και εύκολα προσεγγίσιμη (π.χ. στη δουλειά, στο σπίτι, κλπ.), συνοδευόμενη από συνεχή και εμμένουσα παροχή υψηλής ποιότητας εξατομικευμένης ιατρικής συμβουλής και υποστήριξης. Οι σύγχρονες ιατρικές υπηρεσίες αναμένονται να είναι διαθέσιμες κάθε στιγμή, 7 ημέρες την εβδομάδα και να παρέχονται με έναν εξατομικευμένο τρόπο ώστε να απευθύνονται στις ιδιαίτερες ανάγκες και απαιτήσεις κάθε ατόμου. Η παρούσα διατριβή πραγματεύεται μία μεθοδολογία παροχής διάχυτων υπηρεσιών σε εξελιγμένα τηλεπικοινωνιακά δίκτυα που συνδυάζει τη γνώση πλαισίου, τη μοντελοποίηση χρηστών και τα κοινωνικά δίκτυα (social networks). Η μεθοδολογία αυτή εφαρμόστηκε στον ιατρικό χώρο και ειδικότερα στις διαταραχές άγχους. Πιο συγκεκριμένα, στη διατριβή καθορίστηκαν πλήρως οι παράμετροι πλαισίου που σχετίζονται άμεσα με τις διαταραχές άγχους και προτάθηκε ένα μοντέλο πλαισίου που βασίζεται σε οντολογίες. Επίσης, μελετήθηκε η δομή και οι τεχνικές κατασκευής και ανανέωσης των μοντέλων χρηστών, ενώ μελετήθηκε η χρήση των κοινωνικών δικτύων για την παροχή ιατρικής φροντίδας και οι ρόλοι των μελών τους στις διαταραχές άγχους. Τέλος, προτάθηκε η αρχιτεκτονική ενός συστήματος γνώσης πλαισίου που ενσωματώνει τις ανωτέρω τεχνολογίες, τμήμα του οποίου αναπτύχθηκε, υλοποιήθηκε και αξιολογήθηκε από επαγγελματίες ιατρούς. Κατά την εφαρμογή της παραπάνω μεθοδολογίας στις διαταραχές άγχους αναπτύχθηκε η εφαρμογή PerMed που αποτελεί ένα εργαλείο αρχειοθέτησης και επεξεργασίας των προσωπικών πληροφοριών των ασθενών και τέσσερις υπηρεσίες που στοχεύουν στην υποστήριξη της θεραπείας των διαταραχών άγχους. Οι τρεις εστιάζουν στην ανακάλυψη πιθανών συσχετίσεων στα δεδομένα πλαισίου, ενώ η τέταρτη στοχεύει στην πρόβλεψη του άγχους που θα παρουσιάσει ένας ασθενής σε ένα δεδομένο πλαίσιο. Τα σχόλια που λάβαμε από επαγγελματίες ψυχιάτρους είναι αρκετά ενθαρρυντικά και ευελπιστούμε ότι η προτεινόμενη προσέγγιση θα αποτελέσει ένα ισχυρό εργαλείο υποστήριξης της θεραπείας των διαταραχών άγχους. / Today, we are already on the transition from the traditional desktop-based computing technologies towards ubiquitous computing environments that will enfold us in almost all our daily situations and activities. Simultaneously, there exists an increased tendency of putting the user into the center of service delivery. This means that the services in the ubiquitous environments should be adapted to the context, the needs and the preferences of users. Two of the key-concepts, based on which the delivery of ubiquitous personalized services is realized, are context-awareness and user modeling. The emergence of ubiquitous computing and ubiquitous user modeling has created new expectations and challenges for the delivery of personalized services in a considerable amount of application domains, among which is the healthcare domain. Healthcare provision changes direction becoming protective, proactive and more reachable (e.g. at home or at work), accompanied by continuous and persistent provision of personalized high-quality health advice and assistance. Modern healthcare services are expected to be available around the clock, seven days a week and delivered in a personalized manner addressing the specific needs and preferences of each individual. The present dissertation presents a methodology of providing ubiquitous services at advanced telecommunication networks, which combines context-awareness, user modeling and social networks. This methodology was implemented in the healthcare domain and more specifically in anxiety disorders. In particular, in this dissertation, the contextual aspects that are directly associated with anxiety disorders were defined and an ontology-based context model was proposed. In addition, the user models’ structure was determined and the techniques for the processing of their content were developed. Furthermore, the use of social networks in anxiety disorders and the role of their members were studied. Finally, the architecture of a context-aware system that integrates all the above technologies was proposed, a part of which was developed, implemented and evaluated by professional psychiatrists. During the implementation of the proposed methodology in anxiety disorders, the PerMed application that provides medical experts with a tool for archiving and processing the patient’s personal data and four treatment supportive services were developed. The three of them focus on the discovery of possible associations between the patient’s contextual data and the last service aims at predicting the stress level a patient might suffer from, in a given context. The feedback received from expertized psychiatrists was very encouraging and we hope that the proposed approach will constitute a powerful treatment supportive tool for anxiety disorders.