Dynamic context modeling based FCA in context-aware middleware

This paper presents a proposal that aims to process dynamic Context modeling for mobile objects in the Generalized Adaptive Context-Aware Middleware (GaCAM). Context changes closely related to difference sensors in mobile environment, so the common data modeling in which data structures were fixed after models designed is inadaptable. The principal task is: dynamic Context modeling when the mobile entities holding Context models meet each other or meet a new environment. It is important to consider the differences between dynamic Context modeling and common data modeling. The proposal is Context modeling by applying Formal Concept Analysis (FCA) merging. Our approach creates a merged specialization/generalization hierarchy which captures the knowledge of Context source in mobile environment. The hierarchy can not only describe both Context concepts and related sensors, but also can help higher Context reasoning and activating potential Context event.