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The European Physical Journal B

, Volume 73, Issue 3, pp 455–459 | Cite as

Promotion of cooperation induced by nonuniform payoff allocation in spatial public goods game

  • D. Peng
  • H.-X. Yang
  • W.-X. Wang
  • G. R. Chen
  • B.-H. Wang
Interdisciplinary Physics

Abstract

A nonuniform payoff allocation mechanism is proposed for spatial public goods games where individuals are nodes on a scale-free network. Each individual is assigned a weight ki α, where ki is the degree of individual i and α is an adjustable parameter that controls the degree of diversity in individuals’ profits. During the evolution progress, the allocation of payoff on individual i is assumed to be proportional to its weight. Individuals synchronously update their strategies according to the stochastic rule with a fixed noise level. It is found that there exists an optimal value of α which yields the highest level of cooperation. Other pertinent quantities, including the payoff and the probability of finding a node playing as cooperator versus the degree, are also investigated computationally and analytically. Our results suggest that a suitable degree of diversity among individuals can promote the emergence of cooperation.

Keywords

Degree Distribution Perc Evolutionary Game Public Good Game Snowdrift Game 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • D. Peng
    • 1
  • H.-X. Yang
    • 1
  • W.-X. Wang
    • 2
  • G. R. Chen
    • 3
  • B.-H. Wang
    • 1
    • 4
  1. 1.Department of Modern PhysicsUniversity of Science and Technology of ChinaHefeiP.R. China
  2. 2.Department of Electrical EngineeringArizona State UniversityTempeUSA
  3. 3.Department of Electronic EngineeringCity University of Hong KongKowloon Hong Kong SARP.R. China
  4. 4.Research Center for Complex System Science, University of Shanghai for Science and Technology and Shanghai Academy of System ScienceShanghaiP.R. China

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