Kenji Sugawara Shigeru Fujita Tetsuo Kinoshita Norio Shiratori A design of cognitive agents for recognizing real space - towards symbiotic computing - . 277-285 2008 IEEE ICCI http://dx.doi.org/10.1109/COGINF.2008.4639179 conf/IEEEicci/2008 db/conf/IEEEicci/IEEEicci2008.html#SugawaraFKS08