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physics.soc-ph2022
Reputation structure in indirect reciprocity under noisy and private assessment
Yuma Fujimoto, Hisashi Ohtsuki
Evaluation relationships are pivotal for maintaining a cooperative society. A formation of the evaluation relationships has been discussed in terms of indirect reciprocity, by mode…
physics.soc-ph2016
Hierarchical Prisoner's Dilemma in Hierarchical Public-Goods Game
Yuma Fujimoto, Takahiro Sagawa, Kunihiko Kaneko
The dilemma in cooperation is one of the major concerns in game theory. In a public-goods game, each individual pays a cost for cooperation, or to prevent defection, and receives a…