Just Keep Tweeting, Dear: Web-Mining Methods for Helping a Social Robot Understand User Needs. - Keisuke Takagi; Rafal Rzepka; Kenji Araki (AAAI Spring Symposium: Help Me Help You: Bridging the Gaps in Human-Agent Collaboration, 2011)

Unconstraint measurement of vital information using near-infrared light sensor. - Keisuke Takagi; Hisataka Maruyama; Fumihito Arai (MHS, 2015)

Multi fluorescence microsensors for spatiotemporal measurement of culture environment in a microfluidic chip. - Keisuke Takagi; Hisataka Maruyama; Taisuke Masuda; Osamu Suzuki; Fumihito Arai (MHS, 2016)