A Middleware Infrastructure for Active Spaces
IEEE Pervasive Computing
Semantic Matching of Web Services Capabilities
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
Providing architectural support for building context-aware applications
Providing architectural support for building context-aware applications
Ontology Based Context Modeling and Reasoning using OWL
PERCOMW '04 Proceedings of the Second IEEE Annual Conference on Pervasive Computing and Communications Workshops
A survey on context-aware systems
International Journal of Ad Hoc and Ubiquitous Computing
Specifying loose coupling from existing service composition approaches
ECSA'10 Proceedings of the 4th European conference on Software architecture
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In this paper, we describe a semantic middleware which aims to provide ubiquitous computing applications with high level contextual knowledge. The proposed middleware architecture is designed around service agent entities, offering transparent and reusable services for context semantic discovery, capture and aggregation. Aggregation of contextual knowledge is modeled using services composition mechanism along with dynamic discovery of available service agents enabled through hierarchical and distributed context directories organization. We introduce also a new ontological model to describe contextual knowledge and services interfaces. The proposed middleware is applied to the design of travel organization service scenario, based on the composition of some ad hoc context services.