Development of a context-aware messaging system over heterogeneous wireless networks
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
A context-aware meeting alert using semantic web and rule technology
International Journal of Metadata, Semantics and Ontologies
Efficient profile aggregation and policy evaluation in a middleware for adaptive mobile applications
Pervasive and Mobile Computing
Hybrid reasoning in the CARE middleware for context awareness
International Journal of Web Engineering and Technology
Providing QoS in ontology centered context aware pervasive systems
Proceedings of the 2nd International Conference on PErvasive Technologies Related to Assistive Environments
PERSONAF: framework for personalised ontological reasoning in pervasive computing
User Modeling and User-Adapted Interaction
Macro and micro context-awareness for autonomic pervasive computing
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
Rule-based context-aware adaptation using a goal-oriented ontology
Proceedings of the 2011 international workshop on Situation activity & goal awareness
On the complexity of aggregating information for authentication and profiling
DPM'11 Proceedings of the 6th international conference, and 4th international conference on Data Privacy Management and Autonomous Spontaneus Security
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
An evidential fusion approach for activity recognition in ambient intelligence environments
Robotics and Autonomous Systems
Realising an application environment for information-centric networking
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Context-awareness in mobile and ubiquitous computing requires the acquisition, representation and processing of information which goes beyond the device features, network status, and user location, to include semantically rich data, like user interests and user current activity. On the other hand, when services have to be provided on-the-fly to many mobile users, the efficiency of reasoning with these data becomes a relevant issue. Experimental evidence has lead us to consider currently impractical a tight integration of ontological reasoning with rule based reasoning at the time of request. This paper illustrates a hybrid approach where ontological reasoning is loosely coupled with the efficient rule-based reasoning of a middleware architecture for service adaptation. While rule-based reasoning is performed at the time of service request to evaluate adaptation policies and reconcile possibly conflicting context information, ontological reasoning is mostly performed asynchronously by local context providers to derive non-shallow context information. A limited form of ontological reasoning is activated at the time of request only when essential for service provisioning.