Abstract:

Context modeling and reasoning is the basis of virtual computing environments for dynamic adapting. The ontologybased modeling is one of the important approaches, with the lack of correlative quantitative analysis. This paper analyzes several existing context modeling methods, and focuses on the comparison between the ontologybased modeling and the markup modeling in the three aspects like reasoning efficiency, modeling capability and programming convenience. OWL is chosen to describe the ontology and XML is chosen as the markup language respectively.

Key words: context reasoning;efficiency;ontology;virtual computing environment