Semantic Discovery for Context-Aware Service Provisioning in Mobile Environments
MCMP@MDM(2005)
摘要
Advances in telecommunication and wireless systems together with the increasing diffusion of portable devices are enabling a pervasive and ubiquitous computing infrastructure for service provisioning, where mobile users expect to access the needed data from ubiquitous attachment points and require context-aware services, i.e., services that can adapt provided results to changing context information, such as variations in user relative position, in user requirements, and in locally available resources. A crucial requirement for the provisioning of context-aware services is the dynamical retrieval and interaction with local resources, i.e., discovery. Traditional discovery solutions, which are essentially based on the exact matching of syntactic patterns, like for instance identifiers, interfaces or keywords, cannot be flexible enough to effectively deal with the heterogeneity typical of mobile and pervasive environments. Recent research efforts that exploit semantic, i.e., meaning- based, techniques for the discovery of services have emerged and proved to be able to overcome this kind of limitations. However, semantic-enabled discovery solutions still seem to be underestimated within the pervasive community. In this paper we propose a middleware that supports the intelligent discovery of context-aware services for mobile users, by providing an automatic tool that enable users to specify service queries at a high level of abstraction and a semantics-based matching functionality.
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