Combining Study of Complex Network and Text Mining Analysis to Understand Growth Mechanism of Communities on SNS. - Osamu Yamakawa (EDM, 2011)

Mathematical Model For Collaborative Learning: Acquiring Hierarchic-Structured Knowledge. - Kohei Ogawa; Yasuyuki Nakamura; Koichi Yasutake; Osamu Yamakawa (ICCE, 2013)

A Mathematical Model of Collaborative Learning using Differential Equations. - Shinnosuke Nishi; Yasuyuki Nakamura; Koichi Yasutake; Osamu Yamakawa (ICCE, 2014)