Stochastic payoff evaluation increases the temperature of selection

JOURNAL OF THEORETICAL BIOLOGY

卷:244

Article

Traulsen, Arne ; Nowak, Martin A. ; Pacheco, Jorge M.

关键词: evolutionary game theory;    stochastic effects;   

DOI  :  10.1016/j.jtbi.2006.08.008

来源: Elsevier

【 摘 要 】

We study stochastic evolutionary game dynamics in populations of finite size. Moreover, each individual has a randomly distributed number of interactions with other individuals. Therefore, the payoff of two individuals using the same strategy can be different. The resulting payoff stochasticity reduces the intensity of selection and therefore increases the temperature of selection. A simple mean-field approximation is derived that captures the average effect of the payoff stochasticity. Correction terms to the mean-field theory are computed and discussed. (c) 2006 Elsevier Ltd. All rights reserved.

【 授权许可】

Free