Impact of informers on the evolution of cooperation in prisoner's dilemma game

Zheng-Hong Deng, Zi-Ren Wang, Huan-Bo Wang and Yijie Huang

Chaos, Solitons & Fractals, 2021, vol. 149, issue C

Abstract: In the society, cooperation development is a significant challenge. In this paper, participation of informers is considered to affect cooperation behavior efficiently. Informers can label defectors after competing with them in the first time. Then other players can recognize defectors and keep away from them, so labeled defectors are isolated and cannot interact with others. It is indisputable that informers play a significant role during this process. In order to lucubrate the effect of informer on cooperation in prisoner's dilemma, we introduce a parameter ε to represent the proportion of inform. Numerous simulations show that informers lead surrounding defectors to be labeled and exposed. Then they are isolated by other players and cannot affect cooperation behavior negatively in a large scale, so cooperation level promotes. Besides, with the increasing of ε, cooperation can be enhanced further. We find an obvious threshold in the proportion change of informers. When ε is less than the threshold, cooperative behavior promotes but slightly. Otherwise when ε achieve a certain threshold, cooperators flourish. Out novel recognitions may provide some new perspectives for develop better social mechanism.

Keywords: Cooperation; Informers; Prisoner's dilemma game; Evolutionary game (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:149:y:2021:i:c:s0960077921004239

DOI: 10.1016/j.chaos.2021.111069

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