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Evolutionary public goods games on scale-free networks with unequal payoff allocation mechanism

Author

Listed:
  • Zhang, Haifeng
  • Yang, Hanxin
  • Du, Wenbo
  • Wang, Binghong
  • Cao, Xianbin

Abstract

In this paper, we bring an unequal payoff allocation mechanism into evolutionary public goods game on scale-free networks and focus on the cooperative behavior of the system. The unequal mechanism can be tuned by one parameter α: if α>0, the hub nodes can use its degree advantage to collect more payoff; if α<0, numerous non-hub nodes will obtain more payoff in a single round game. Simulation results show that the cooperation level has a non-trivial dependence on α. For the small enhancement factor r, the cooperator frequency can be promoted by both negative and positive α. For large r, there exists an optimal α that can obtain the highest cooperation level. Our results may sharpen the understanding of the emergence of cooperation induced by the unequal payoff allocation mechanism.

Suggested Citation

  • Zhang, Haifeng & Yang, Hanxin & Du, Wenbo & Wang, Binghong & Cao, Xianbin, 2010. "Evolutionary public goods games on scale-free networks with unequal payoff allocation mechanism," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(5), pages 1099-1104.
    • Handle: RePEc:eee:phsmap:v:389:y:2010:i:5:p:1099-1104
    DOI: 10.1016/j.physa.2009.11.029
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