Abstract:

The context-aware computing is one of extremely important fields for the research of pervasive computing. An approach to the modeling and reasoning of the context-aware knowledge using the web ontology language (OWL) is proposed. It suggests a context model framework in the semantic restrictions of the ontology, which divides the context model into a two-level structure, i.e. meta ontology and domain-specific ontology, according to the abstract hierarchy. This structure models the basic concepts of people, places, locations, and presentation events. Then an algorithm is proposed to convert the context model to the knowledge described in OWL. Finally, a case study is given to illustrate the practicality of the method.