Aura: an Architectural Framework for User Mobility in Ubiquitous Computing Environments
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A Reactive Service Composition Architecture for Pervasive Computing Environments
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Les environnements d'informatique pervasive mettent en oeuvre de nombreux objets communicants. L'ensemble de ces objets forme un système d'informatique ubiquiste dont une interface intuitive et flexible doit être l'environnement même d'un utilisateur. Chacun de ces objets offrant des services spécifiques nombreux et variés, leur contrôle et leur suivi par les utilisateurs devient problématique et induit une surcharge cognitive. Dans cet article, nous présentons une approche qui vise à composer automatiquement des services fournis par des objets communicants de façon à proposer aux utilisateurs des services de haut niveau. La prise en compte d'informations de contexte pour adapter le processus de composition est une des caractéristiques essentielles de ce système, et constitue une étape indispensable à la construction intelligente de services de haut niveau, et donc à une véritable intelligence ambiante.Pervasive computing environments involve a variety of smart devices and home appliances. Communities of these devices form a ubiquitous information processing system to which the physical environment should provide an intuitive and flexible user interface. Since each of these devices offers specific services, their number and variety make it difficult for users to control and monitor them all and tend to overload humans cognitive load. In this paper, we present an approach aimed at automatically composing device services, so that users can benefit from higher level services. We also ensure that context information such as users' locations and preferences is properly taken into account within the composition process. We believe that building mechanisms for synthesizing context-aware high level services is a mandatory step towards Ambient Intelligence.