A service-oriented middleware for building context-aware services
Journal of Network and Computer Applications
Human-Computer Interaction
Context-Aware Team Task Allocation to Support Mobile Police Surveillance
FAC '09 Proceedings of the 5th International Conference on Foundations of Augmented Cognition. Neuroergonomics and Operational Neuroscience: Held as Part of HCI International 2009
A context-aware middleware for real-time semantic enrichment of distributed multimedia metadata
Multimedia Tools and Applications
Agent-assisted task management that reduces email overload
Proceedings of the 15th international conference on Intelligent user interfaces
Semantic context relevance assessment in urban ubiquitous environments
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
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In order to support police officers in their daily activities, we have designed a rule-based system which can deliver contextualized information to police officers, thus supporting decision making. In particular, we present a framework that has been designed on the basis of requirements elicited in a previous study, focusing on the rule language and the engine that essentially defines and allows to configure the behaviour of the system. The rules consist of a body which specifies conditions that need to be fulfilled in a certain context. The head of the rules specifies how the relevance ratings of certain information items for specific users need to be updated given that the conditions in the body are met. On the basis of cumulated ratings, the system generates a user- and context specific ranking of information items. Quantitative evaluations in terms of precision and recall with respect to a gold standard determined in cooperation with police officers show that the system can cater for the requirements of our end users and yields reasonable precision and recall values.