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Survey of Context Provisioning Middleware

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5 Author(s)
Knappmeyer, M. ; Fac. of Eng. & Comput. Sci., Univ. of Appl. Sci. Osnabruck, Osnabruck, Germany ; Kiani, S.L. ; Reetz, E.S. ; Baker, N.
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In the scope of ubiquitous computing, one of the key issues is the awareness of context, which includes diverse aspects of the user's situation including his activities, physical surroundings, location, emotions and social relations, device and network characteristics and their interaction with each other. This contextual knowledge is typically acquired from physical, virtual or logical sensors. To overcome problems of heterogeneity and hide complexity, a significant number of middleware approaches have been proposed for systematic and coherent access to manifold context parameters. These frameworks deal particularly with context representation, context management and reasoning, i.e. deriving abstract knowledge from raw sensor data. This article surveys not only related work in these three categories but also the required evaluation principles.

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Communications Surveys & Tutorials, IEEE  (Volume:15 ,  Issue: 3 )