Promotion of cooperation induced by nonuniform payoff allocation in spatial public goods game
- 172 Downloads
A nonuniform payoff allocation mechanism is proposed for spatial public goods games where individuals are nodes on a scale-free network. Each individual is assigned a weight ki α, where ki is the degree of individual i and α is an adjustable parameter that controls the degree of diversity in individuals’ profits. During the evolution progress, the allocation of payoff on individual i is assumed to be proportional to its weight. Individuals synchronously update their strategies according to the stochastic rule with a fixed noise level. It is found that there exists an optimal value of α which yields the highest level of cooperation. Other pertinent quantities, including the payoff and the probability of finding a node playing as cooperator versus the degree, are also investigated computationally and analytically. Our results suggest that a suitable degree of diversity among individuals can promote the emergence of cooperation.
KeywordsDegree Distribution Perc Evolutionary Game Public Good Game Snowdrift Game
Unable to display preview. Download preview PDF.
- 1.A.M. Colman, Game Theory and Its Applications in the Social and Biological Sciences (Butterworth-Heinemann, Oxford, 1995)Google Scholar
- 41.V. Pareto, Le Cours d’Économie Politique (Macmillan, Lausanne, Paris, 1987)Google Scholar