Unified User-Centric Context: Who, Where, When, What, How and Why
نویسندگان
چکیده
To deploy context-aware applications, there has been a steadily increasing interest in context model to efficiently represent various contexts in daily life. However, most ways of modeling context are specific to purpose of each service or give undue value to particular information, e.g. location. To loosen the coupling between contexts and services, we propose unified context that represent user-centric contextual information in terms of 5W1H (Who, What, Where, When, How, and Why), to be shared among services. The proposed context can simply model a user’s context in environments by assorting complicated information into six categories. Also, the unified context can enable sensor, user, and service to differently generate or exploit a defined 5W1H-semantic structure. Furthermore, unified context is structured with elements of 5W1H and attributes of each element so that any service can easily exploit the context for improving service. As a result, the proposed unified context enables context-aware services to more quickly provide personalized services by exploiting unified user-centric context.
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تاریخ انتشار 2005