Rewarding evolutionary fitness with links between populations promotes cooperation

被引:198
|
作者
Wang, Zhen [1 ,2 ,3 ]
Szolnoki, Attila [4 ]
Perc, Matjaz
机构
[1] Hong Kong Baptist Univ, Dept Phys, Kowloon Tong, Hong Kong, Peoples R China
[2] Hong Kong Baptist Univ, Ctr Nonlinear Studies, Kowloon Tong, Hong Kong, Peoples R China
[3] Hong Kong Baptist Univ, Inst Computat & Theoret Studies, Beijing Hong Kong Singapore Joint Ctr Nonlinear &, Kowloon Tong, Hong Kong, Peoples R China
[4] Hungarian Acad Sci, Res Ctr Nat Sci, Inst Tech Phys & Mat Sci, H-1525 Budapest, Hungary
关键词
Evolutionary games; Interdependent networks; Reward; Coevolution; Self-organization; ANTISOCIAL PUNISHMENT; ALTRUISTIC PUNISHMENT; SOCIAL DILEMMAS; RECIPROCITY; NETWORKS; EMERGENCE; DYNAMICS; REPUTATION; GAMES;
D O I
10.1016/j.jtbi.2014.01.037
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Evolution of cooperation in the prisoner's dilemma and the public goods game is studied, where initially players belong to two independent structured populations. Simultaneously with the strategy evolution, players whose current utility exceeds a threshold are rewarded by an external link to a player belonging to the other population. Yet as soon as the utility drops below the threshold, the external link is terminated. The rewarding of current evolutionary fitness thus introduces a time-varying interdependence between the two populations. We show that, regardless of the details of the evolutionary game and the interaction structure, the self-organization of fitness and reward gives rise to distinguished players that act as strong catalysts of cooperative behavior. However, there also exist critical utility thresholds beyond which distinguished players are no longer able to percolate. The interdependence between the two populations then vanishes, and cooperators are forced to rely on traditional network reciprocity alone. We thus demonstrate that a simple strategy-independent form of rewarding may significantly expand the scope of cooperation on structured populations. The formation of links outside the immediate community seems particularly applicable in human societies, where an individual is typically member in many different social networks. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:50 / 56
页数:7
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