Decision Making based on Duality between Positive and Negative Evaluations. - Rumiko Azuma; Hayao Miyagi; Yui Miyagi (ICAART (1), 2011)

Preference Order of Categorized Group Opinions Considering Grade of Decision Makers. - Yui Miyagi; Hayao Miyagi; Ichiko Kinjo (ANT/MobiWIS, 2012)