Guanling Chen Ming Li David Kotz Design and Implementation of a Large-Scale Context Fusion Network. 246-255 2004 conf/mobiquitous/2004 MobiQuitous http://doi.ieeecomputersociety.org/10.1109/MOBIQ.2004.1331731 db/conf/mobiquitous/mobiquitous2004.html#ChenLK04