Providing architectural support for building context-aware applications
Providing architectural support for building context-aware applications
Probabilistic models for access strategies to dynamic information elements
Performance Evaluation
A context quality model to support transparent reasoning with uncertain context
QuaCon'09 Proceedings of the 1st international conference on Quality of context
A framework for quality of context management
QuaCon'09 Proceedings of the 1st international conference on Quality of context
My personal Adaptive Global NET (MAGNET)
My personal Adaptive Global NET (MAGNET)
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Scalable access to dynamic context information is a key challenge for future context-sensitive systems. When increasing the access frequency, the information accuracy can improve but at the same time the additional context management traffic may reduce network performance, which creates the opposite effect on information reliability. In order to understand and control this trade-off, this paper develops a model that allows to calculate context reliability, captured by the so-called mismatch probability, in relation to the network load. The model is subsequently used for a real time algorithm for admission and configuration control for incoming context subscriptions. Two different variants of the algorithm are analyzed in simulation results while the basic version determines an optimal configuration only for a newly incoming context subscription, the second version also iterates over and potentially reconfigures already established context subscriptions. The results show the gain of the total mismatch probability when selecting the context access configuration intelligently.