中国物理B ›› 2012, Vol. 21 ›› Issue (1): 18701-018701.doi: 10.1088/1674-1056/21/1/018701

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Integrating the environmental factor into the strategy updating rule to promote cooperation in evolutionary games

赵琳, 周鑫, 梁治, 吴家睿   

  1. Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2011-07-03 修回日期:2011-07-13 出版日期:2012-01-15 发布日期:2012-01-20
  • 基金资助:
    Project supported by the CAS/USTC Special Grant for Postgraduate Research, Innovation, and Practice.

Integrating the environmental factor into the strategy updating rule to promote cooperation in evolutionary games

Zhao Lin(赵琳), Zhou Xin(周鑫), Liang Zhi(梁治), and Wu Jia-Rui(吴家睿)   

  1. Hefei National Laboratory for Physical Sciences at the Microscale and School of Life Sciences, University of Science and Technology of China, Hefei 230026, China
  • Received:2011-07-03 Revised:2011-07-13 Online:2012-01-15 Published:2012-01-20
  • Supported by:
    Project supported by the CAS/USTC Special Grant for Postgraduate Research, Innovation, and Practice.

摘要: Many previous studies have shown that the environment plays an important role for social individuals. In this paper, we integrate the environmental factor, which is defined as the average payoff of all a player's neighbours, with the standard Fermi updating rule by introducing a tunable parameter, ω. It is found that the level of cooperation increases remarkably, and that the cooperators can better resist the invasion of defection with an increase in ω. This interesting phenomenon is then explained from a microscopic view. In addition, the universality of this mechanism is also proved with the help of the small-world network and the random regular graph. This work may be helpful in understanding cooperation behaviour in species from unicellular organisms up to human beings.

关键词: evolutionary game, prisoner's dilemma game, cooperation

Abstract: Many previous studies have shown that the environment plays an important role for social individuals. In this paper, we integrate the environmental factor, which is defined as the average payoff of all a player's neighbours, with the standard Fermi updating rule by introducing a tunable parameter, ω. It is found that the level of cooperation increases remarkably, and that the cooperators can better resist the invasion of defection with an increase in ω. This interesting phenomenon is then explained from a microscopic view. In addition, the universality of this mechanism is also proved with the help of the small-world network and the random regular graph. This work may be helpful in understanding cooperation behaviour in species from unicellular organisms up to human beings.

Key words: evolutionary game, cooperation, prisoner's dilemma game

中图分类号:  (Dynamics of evolution)

  • 87.23.Kg
87.23.Ge (Dynamics of social systems) 89.75.Fb (Structures and organization in complex systems) 02.50.Le (Decision theory and game theory)