期刊
CHAOS SOLITONS & FRACTALS
卷 96, 期 -, 页码 70-75出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chaos.2017.01.008
关键词
Fitness; Environment; Cooperation; Prisoners' dilemma game
资金
- National Natural Science Foundation of China (Yunnan United Fund (Key Project)) [U1302267]
- National Natural Science Foundation of China [11671348]
- Yunnan University of Finance and Economics [2016YUFEYC017]
In spatial evolutionary games, the fitness of each player is usually measured by its inheritance (i.e. the accumulated payoffs by playing the game with its all nearest neighbors), or by the linear combination of its inheritance and its environment (i.e. the average of its all nearest neighbors' inheritance). However, a rational individual incorporates environment into its fitness to develop itself only when environment is dominant in real life. Here, we redefine the individual fitness as a linear combination of inheritance and environment when environment performs better than inheritance. Multiple Monte Carlo simulation results show that incorporating dominant environment can improve cooperation comparing with the traditional case, and furthermore increasing the proportion of prevailing environment can enhance cooperative level better. These findings indicate that our mechanism enhances the individual ability to adapt environment, and makes the spatial reciprocity more efficient. Besides, we also verify its robustness against different game models and various topology structures. (C) 2017 Elsevier Ltd. All rights reserved.
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