Evolutionary public goods games on scale-free networks with unequal payoff allocation mechanism |
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Authors: | Haifeng Zhang Hanxin Yang Binghong Wang Xianbin Cao |
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Institution: | a Department of Modern Physics, University of Science and Technology of China, Hefei Anhui 230026, PR China b School of Mathematical Science, Anhui University, Hefei 230039, PR China c Department of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, PR China d The Research Center for Complex System Science, University of Shanghai for Science and Technology and Shanghai Academy of System Science, Shanghai 200093, PR China |
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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. |
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Keywords: | 89 75 Hc 87 23 Kg 02 50 Le |
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