23 citations · 33 across the 5 of their papers we have counts for
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physics.soc-ph2022★ 1 cited
Evolution of global development cooperation: An analysis of aid flows with hierarchical stochastic block models
Koji Oishi, Hiroto Ito, Yohsuke Murase +2
Despite considerable scholarly attention on the institutional and normative aspects of development cooperation, its longitudinal dynamics unfolding at the global level have rarely…
physics.soc-ph2021★ 9 cited
Balanced-imbalanced transitions in indirect reciprocity dynamics on networks
Koji Oishi, Shuhei Miyano, Kimmo Kaski +1
Here we investigate the dynamics of indirect reciprocity on networks, a type of social dynamics in which the attitude of individuals, either cooperative or antagonistic, toward oth…
physics.soc-ph2012★ 23 cited
Group Formation through Indirect Reciprocity
Koji Oishi, Takashi Shimada, Nobuyasu Ito
The emergence of structure in cooperative relation is studied in a game theoretical model. It is proved that specific types of reciprocity norm lead individuals to split into two g…