CAMPUS: A Context-Aware Middleware

In recent years, many researchers have been investigating wearable computer applications. These wearable applications are required to have context-awareness. The middleware which eases to develop context-aware applications is required, since to implement the context-aware application is very messy. We are developing CAMPUS which is a context-aware middleware to ease construct context-aware applications. The context model employed by CAMPUS should be defined formally. It should be able to deal with a context with its quality of the context simultaneously and deal with a transition of situations. In this paper, we define a context model employing on a fuzzy set theory to deal with the context and its quality of context. The context model also can deal with the transition of situations represented with the context free language.