Muffin and Citron (2004 – 2005)

Multi-sensory Mobile Device and Tuplespace-based Context Acquisition Framework

Tetsuo Yamabe (PM), Ayako Takagi

In this project, we developed a context extraction framework for a mobile device that equips a variety of sensors. The framework captures context about a user and her surrounding environment; the information is used to adapt the behavior of applications running on the mobile device. Our framework adopts the blackboard architecture to execute multiple analysis modules that analyze signals from respective sensors. Respective modules implement different algorithms to complement each other’s results to retrieve accurate high-level context. Based on experiments with a sample application, we evaluate the feasibility of the framework and point out the possibilities and limitations of context extraction in mobile devices.


Tetsuo Yamabe, Ayako Takagi, and Tatsuo Nakajima. 2005. Citron: A Context Information Acquisition Framework for Personal Devices. In Proceedings of the 11th IEEE international Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA’05, full paper).

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