کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4499065 | 1319012 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Pairwise comparison and selection temperature in evolutionary game dynamics Pairwise comparison and selection temperature in evolutionary game dynamics](/preview/png/4499065.png)
Recently, the frequency-dependent Moran process has been introduced in order to describe evolutionary game dynamics in finite populations. Here, an alternative to this process is investigated that is based on pairwise comparison between two individuals. We follow a long tradition in the physics community and introduce a temperature (of selection) to account for stochastic effects. We calculate the fixation probabilities and fixation times for any symmetric 2×22×2 game, for any intensity of selection and any initial number of mutants. The temperature can be used to gauge continuously from neutral drift to the extreme selection intensity known as imitation dynamics. For some payoff matrices the distribution of fixation times can become so broad that the average value is no longer very meaningful.
Journal: Journal of Theoretical Biology - Volume 246, Issue 3, 7 June 2007, Pages 522–529