Group Formation through Indirect Reciprocity. - Koji Oishi; Takashi Shimada; Nobuyasu Ito (CoRR, 2012)

Iterated crowdsourcing dilemma game. - Koji Oishi; Manuel Cebrián; Andrés Abeliuk; Naoki Masuda (CoRR, 2014)

Good-sounds.org: A Framework to Explore Goodness in Instrumental Sounds. - Giuseppe Bandiera; Oriol Romani Picas; Hiroshi Tokuda; Wataru Hariya; Koji Oishi; Xavier Serra (ISMIR, 2016)

Structural balance of alliance and rivalry networks in international relations. - Koji Oishi; Kentaro Sakuwa (Artif. Life Robotics, 2025)