Learning algorithm by reinforcement signals for the automatic recognition system. - Koichi Ikuta; Hiroaki Tanaka; Ken-ichi Tanaka; Kazuo Kyuma (SMC (5), 2004)

SOM-Based Continuous Category Learning for Age Classification by Facial Images. - Koichi Ikuta; Hiroshi Kage; Kazuhiko Sumi; Ken-ichi Tanaka; Kazuo Kyuma (ICONIP (2), 2007)

Human intruder detection with Leaky Coaxial cables for wide area surveillance system. - Koichi Ikuta; Hiroshi Kage; Makito Seki; Takashi Hirai (SMC, 2011)