An Ontology Oriented Architecture for Context Aware Services Adaptation

In the field of ubiquitous computing, a class of applications called context-aware services attracted great interest especially since the emergence of wireless technologies and mobile devices. Context-aware application can dynamically capture a range of information from its environment and this information represents a context, the application adapts its execution according to this context. An important challenge in ubiquitous computing is dealing with context. Ontologies presents the most promising instrument for context modeling and managing due to their high and formal expressiveness and the possibilities for applying ontology reasoning techniques. In this paper, we present an ontology based approach for the development of context aware services.Comment: 10 pages, 5 figures, IJCSI (International Journal of Computer Science Issues

Context-Awareness for Service Oriented Systems *

Today, service oriented systems need to be enhanced to sense and react to user’s context in order to provide a better user experience. To meet this requirement, Context-Aware Services (CAS) have emerged as an underling design and development paradigm for the development of context-aware systems. The fundamental challenges for such systems development are context-awareness management and service adaptation to the user’s context. To cope with such requirements, we propose a well designed architecture, named ACAS, to support the development of Context-Aware Service Oriented Systems (CASOS). This architecture relies on a set of context-awareness and CAS specifications and metamodels to enhance a core service, in service oriented systems, to be context-aware. This enhancement is fulfilled by the Aspect Adaptations Weaver (A2W) which, based on the Aspect Paradigm (AP) concepts, considers the service’s adaptations as aspects