Toward principles for the design of ontologies used for knowledge sharing
International Journal of Human-Computer Studies - Special issue: the role of formal ontology in the information technology
Some computer science issues in ubiquitous computing
ACM SIGMOBILE Mobile Computing and Communications Review - Special issue dedicated to Mark Weiser
A Survey of Context-Aware Mobile Computing Research
A Survey of Context-Aware Mobile Computing Research
An event-driven, user-centric, QoS-aware middleware framework for ubiquitous multimedia applications
M3W Proceedings of the 2001 international workshop on Multimedia middleware
An ontology for context-aware pervasive computing environments
The Knowledge Engineering Review
Loosely Coupling Ontological Reasoning with an Efficient Middleware for Context-awareness
MOBIQUITOUS '05 Proceedings of the The Second Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services
A semantic P2P framework for building context-aware applications in multiple smart spaces
EUC'07 Proceedings of the 2007 international conference on Embedded and ubiquitous computing
Benchmarking database representations of RDF/S stores
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
CORBA: integrating diverse applications within distributed heterogeneous environments
IEEE Communications Magazine
QoS-aware middleware for ubiquitous and heterogeneous environments
IEEE Communications Magazine
Quality-of-service routing for supporting multimedia applications
IEEE Journal on Selected Areas in Communications
Extending event-driven experiments for human activity for an assistive environment
Proceedings of the 3rd International Conference on PErvasive Technologies Related to Assistive Environments
An event driven framework for assistive CPS environments
ACM SIGBED Review - Special Issue on the 2nd Joint Workshop on High Confidence Medical Devices, Software, and Systems (HCMDSS) and Medical Device Plug-and-Play (MD PnP) Interoperability
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There has been significant research in adapting the Semantic Web technologies to create flexible context aware pervasive systems to enhance fields such as assisted living or smart environments. Several ontology based techniques have been proposed to simplify modeling knowledge and its relationships, and several ontology centered middleware tools are currently being developed to provide flexible and viable solutions for application developers. However, middleware built on the basis of Semantic Web generally suffers from drawbacks in performance, which limits its practical applications in the real world. This paper proposes a framework to facilitate Quality of Service (QoS) in ontology centered context aware pervasive middleware. Our approach suggests that context-aware middleware that operate by contracting mutual agreements with the client applications and provide controls over the amount of data to be processed by them can achieve predictable performance and response times. We also propose a service contract scheme that allows both client applications and middleware to participate in the decisions regarding the necessary data transformations required by the different system components in order to improve the overall system performance.