SmartShadow: Modeling a user-centric mobile virtual space

This paper attempts to model pervasive computing environments as a user-centric “SmartShadow” using the BDP (Belief-Desire-Plan) user model, which maps pervasive computing environments into a dynamic virtual user space. SmartShadow will follow the user to provide him with pervasive services, just like his shadow in the physical world. In the BDP model, desires of a user are inferred from his belief set, and plans are made to satisfy each desire. Pervasive service is introduced to describe computing resources in the cyberspace, which can be organized by the user's BDP to accomplish his desires. The composition process maps pervasive services into a user's SmartShadow. The model is logically natural and simple, and can flexibly model dynamics of pervasive computing spaces. In addition, we implement a simulation system to verify and evaluate the SmartShadow model.