Vrije Universiteit Brussel – Belgium

Recent trends on ubiquitous computing have created new requirements for discovering and using the available services in the network. This leads to require semantic interoperability between heterogeneous entities, which means to realize dynamic ontology to exchange semantic information and configure automatically. This thesis mainly concentrates on semantic discovery of service components. A survey of the state of the art in services discovery is provided, and two key procedures, dynamic adaptation and effective searches are being focused on. Having given a comprehensive survey of all major research being conducted in the area of ontology construction, the thesis proposes a generic approach to the semantic service discovery that allows establishing dynamic adaptive ontology by using RDF/S to facilitate the description of service components. And the prototype also provides the mechanism to combine the ontology infrastructure with conceptual retrieval module which is a powerful reasoning engine to acquire high performance on searching process. Conjunctive with Microsoft web service strategy, the architecture can be reflected on .NET platform eventually. Based on several foundation techniques an implementation has been developed for the architecture . Together with a handheld device application, a walkthrough scenario is performed to estimate the work.