23 citations · 33 across the 5 of their papers we have counts for
5 papers
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…
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…
Structural balance of alliance and rivalry networks in international relations
Koji Oishi, Kentaro Sakuwa
Does the enemy of my enemy become my friend? A growing literature on structural analysis of interstate relationships has tackled this old question from the network perspective. How…
Iterated crowdsourcing dilemma game
Koji Oishi, Manuel Cebrian, Andres Abeliuk +1
The Internet has enabled the emergence of collective problem solving, also known as crowdsourcing, as a viable option for solving complex tasks. However, the openness of crowdsourc…
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…