A study of social graph analysis for preschool education using face authentication: Pruning for centrality optimization in graph analysis. - Tsuyoshi Tomioka; Makoto Hasegawa; Shojiro Shiraishi (SNPD, 2017)

A Study on Social Graph Analysis Using Beacon Bluetooth Radio Transmitter. - Makoto Takamatsu; Tsuyoshi Tomioka; Eizaburo Iwata; Makoto Hasegawa (CSII, 2018)