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不对称博弈中的进化稳定策略:动态和信息论视角

Evolutionarily stable strategy in asymmetric games: Dynamical and information-theoretical perspectives

Indian Institute of Technology Kanpur(坎普尔印度理工学院);Indian Institute of Technology Madras(马德拉斯印度理工学院)

Vikash Kumar Dubey, Suman Chakraborty, Arunava Patra, Sagar Chakraborty

AI总结:

本文从动态和信息论视角探讨不对称博弈中进化稳定策略的定义与稳定性,分析其与复制者方程及相对熵的关系。

摘要:

进化稳定策略(ESS)是进化博弈论的核心概念。对于对称博弈,即在同质群体中进行的博弈,其定义已被广泛接受。然而,在不对称博弈中,即在包含多个亚群体的群体中进行的博弈,情况并不清晰。针对此类情况的各种ESS扩展定义在如何对应于复制者方程的固定点上存在差异。此外,某些定义可能甚至等价,因此在整体框架中是冗余的。除了报告一些新结果外,本文部分目的是作为不对称博弈中某些最重要ESS定义的背景性综述。我们对这些定义进行了协调并进行了深入分析,在可能的情况下建立了它们之间的等价性——其中一些此前未被报告。由于定义ESS应对应于复制者动力学的渐近稳定固定点,我们提出了各种定义与其动态稳定性之间的联系。此外,我们发现使用相对熵原理来获得不对称博弈中ESS概念的信息论见解,从而在这一背景下建立了博弈论、动力系统理论和信息论之间的三重联系。我们还在不对称超矩阵博弈的背景下讨论了我们的结论,其中超过两个人同时互动以获得报酬。

英文摘要:

Evolutionarily stable strategy (ESS) is the defining concept of evolutionary game theory. It has a fairly unanimously accepted definition for the case of symmetric games which are played in a homogeneous population where all individuals are in same role. However, in asymmetric games, which are played in a population with multiple subpopulations (each of which has individuals in one particular role), situation is not as clear. Various generalizations of ESS defined for such cases differ in how they correspond to fixed points of replicator equation which models evolutionary dynamics of frequencies of strategies in the population. Moreover, some of the definitions may even be equivalent, and hence, redundant in the scheme of things. Along with reporting some new results, this paper is partly indented as a contextual mini-review of some of the most important definitions of ESS in asymmetric games. We present the definitions coherently and scrutinize them closely while establishing equivalences -- some of them hitherto unreported -- between them wherever possible. Since it is desirable that a definition of ESS should correspond to asymptotically stable fixed points of replicator dynamics, we bring forward the connections between various definitions and their dynamical stabilities. Furthermore, we find the use of principle of relative entropy to gain information-theoretic insights into the concept of ESS in asymmetric games, thereby establishing a three-fold connection between game theory, dynamical system theory, and information theory in this context. We discuss our conclusions also in the backdrop of asymmetric hypermatrix games where more than two individuals interact simultaneously in the course of getting payoffs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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