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Dynamic context management for pervasive applications

Published online by Cambridge University Press:  01 March 2008

JÉRÔME EUZENAT ,
JÉRÔME PIERSON  and
FANO RAMPARANY
JÉRÔME EUZENAT
Affiliation:
INRIA Rhône-Alpes & LIG, 655 avenue de l'Europe, 38330 Montbonnot Saint Martin, France; e-mail: [email protected]
JÉRÔME PIERSON
Affiliation:
INRIA Rhône-Alpes & LIG, 655 avenue de l'Europe, 38330 Montbonnot Saint Martin, France; e-mail: [email protected] Orange Labs, 28 chemin du Vieux Chêne, 38240 Meylan, France; e-mail: [email protected], [email protected]
FANO RAMPARANY
Affiliation:
Orange Labs, 28 chemin du Vieux Chêne, 38240 Meylan, France; e-mail: [email protected], [email protected]
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Abstract

Pervasive computing aims at providing services for human beings that interact with their environment (encompassing objects and people who reside in it). Pervasive computing applications must be able to take into account the context in which users evolve, for example, physical location, social or hierarchical position, current tasks as well as related information. These applications have to deal with the dynamic integration in the environment of new, and sometimes unexpected, elements (users or devices). In turn, the environment has to provide context information to newly designed applications. This requires a framework which is open, dynamic and minimal. We describe an architecture in which context information is distributed in the environment and context managers use semantic Web technologies in order to identify and characterize available resources. The components in the environment maintain their own context expressed in RDF (Resource Description Framework) and described through OWL ontologies. They may communicate this information to other components, obeying a simple protocol for identifying them and determining the information they can provide. We show how this architecture allows introducing new devices and new applications without interrupting what is working. In particular, the openness of ontology description languages makes possible the extension of context descriptions and ontology matching helps dealing with independently developed ontologies.

Type
Articles
Information
The Knowledge Engineering Review , Volume 23 , Special Issue 1: Contexts and Ontologies , March 2008 , pp. 21 - 49
Copyright
Copyright © Cambridge University Press 2008

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