Pii: S0025-5564(00)00042-0
نویسندگان
چکیده
This article is concerned with the characterization and existence of evolutionarily stable strategies (ESS) in Games against Nature, a class of models described by ®nite size populations and absolute ®tness measures. We address these problems in terms of a new formalism which revolves around the concept evolutionary entropy, a measure of the diversity of options associated with a strategy ± pure strategies have zero entropy, mixed strategies positive entropy. We invoke this formalism to show that ESS are characterized by extremal states of entropy. We illustrate this characterization of ESS by an analysis of the evolution of the sex ratio and the evolution of seed size. Ó 2000 Elsevier Science Inc. All rights reserved.
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تاریخ انتشار 2000