Middleware Support for Quality of Context in Pervasive Context-Aware Systems


Sheikh, K. and Wegdam, M. and Sinderen van, M.J. (2007) Middleware Support for Quality of Context in Pervasive Context-Aware Systems. In: Fifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2007, 19-23 March 2007, White Plains, NY, USA.

Abstract:Middleware support for pervasive context-aware systems relieves context-aware
applications from dealing with the complexity of context-specific operations
such as context acquisition, aggregation, reasoning and distribution. The
middleware decouples applications from the underlying heterogeneous context
sensors, and offers advantages such as rapid development of context-aware
applications and efficient usage of the context sensors. Context sensors have
inherent limitations with respect to the quality of the context information
they produce. Without breaking the decoupling, the middleware needs to
explicitly model and quantify this quality of context in order to allow
application to adapt their behavior based on the quality of context, for
efficiency reasons and to enable quality-of-context-aware privacy policies.
In this paper we identify and define five quality-of-context indicators for
context-aware middleware, and discuss different alternatives for their
quantification. These quality-of-context indicators are: precision, freshness,
spatial resolution, temporal resolution and probability of correctness.
Item Type:Conference or Workshop Item
Copyright:© 2007 IEEE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/62009
Official URL:http://dx.doi.org/10.1109/PERCOMW.2007.81
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