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

K. Sheikh, M. Wegdam, Marten J. van Sinderen

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    50 Citations (Scopus)
    18 Downloads (Pure)

    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.
    Original languageEnglish
    Title of host publicationFifth Annual IEEE International Conference on Pervasive Computing and Communications Workshops, 2007. PerCom Workshops '07
    PublisherIEEE Computer Society
    Pages461-466
    Number of pages6
    ISBN (Print)0-7695-2788-4
    DOIs
    Publication statusPublished - Mar 2007
    EventFifth Annual IEEE International Conference on Pervasive Computing and Communications, PerCom 2007 - White Plains, United States
    Duration: 19 Mar 200723 Mar 2007
    Conference number: 5

    Workshop

    WorkshopFifth Annual IEEE International Conference on Pervasive Computing and Communications, PerCom 2007
    Abbreviated titlePerCom
    CountryUnited States
    CityWhite Plains
    Period19/03/0723/03/07

    Keywords

    • SCS-Services

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