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

✍ Scribed by Haifeng Zhang; Hanxin Yang; Wenbo Du; Binghong Wang; Xianbin Cao

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 894 KB
• Volume: 389
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/j.physa.2009.11.029

✦ Synopsis

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.