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添加151字节 、 2020年8月6日 (四) 10:09
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• 在进化心理学中,进化均衡策略主要用作人类生物学进化的模型。
 
• 在进化心理学中,进化均衡策略主要用作人类生物学进化的模型。
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==Motivation==
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== Motivation 动机==
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The Nash equilibrium is the traditional solution concept in game theory. It depends on the cognitive abilities of the players. It is assumed that players are aware of the structure of the game and consciously try to predict the moves of their opponents and to maximize their own payoffs. In addition, it is presumed that all the players know this (see common knowledge).  These assumptions are then used to explain why players choose Nash equilibrium strategies.
 
The Nash equilibrium is the traditional solution concept in game theory. It depends on the cognitive abilities of the players. It is assumed that players are aware of the structure of the game and consciously try to predict the moves of their opponents and to maximize their own payoffs. In addition, it is presumed that all the players know this (see common knowledge).  These assumptions are then used to explain why players choose Nash equilibrium strategies.
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纳什均衡点是博弈论中传统的解决方案概念。这取决于运动员的认知能力。这是假设玩家知道游戏的结构,并有意识地试图预测他们的对手的动作和最大化他们自己的收益。此外,假定所有的玩家都知道这一点(参见常识)。这些假设然后被用来解释为什么玩家选择纳什均衡点/投资策略。
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在博弈论中,纳什平衡相当于一种传统的解决方案概念,而这取决于玩家的认知能力。假定玩家知道游戏的结构,有意识地尝试预测对手的行动,并最大程度地提高自己的收益。另外,纳什平衡也假定所有玩家都知道这一点(请参阅常识性知识common knowledge)。后来这些假设又被用于解释为什么玩家会选择纳什平衡策略。
 
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Evolutionarily stable strategies are motivated entirely differently.  Here, it is presumed that the players' strategies are biologically encoded and heritable.  Individuals have no control over their strategy and need not be aware of the game.  They reproduce and are subject to the forces of natural selection, with the payoffs of the game representing reproductive success (biological fitness). It is imagined that alternative strategies of the game occasionally occur, via a process like mutation. To be an ESS, a strategy must be resistant to these alternatives.
 
Evolutionarily stable strategies are motivated entirely differently.  Here, it is presumed that the players' strategies are biologically encoded and heritable.  Individuals have no control over their strategy and need not be aware of the game.  They reproduce and are subject to the forces of natural selection, with the payoffs of the game representing reproductive success (biological fitness). It is imagined that alternative strategies of the game occasionally occur, via a process like mutation. To be an ESS, a strategy must be resistant to these alternatives.
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进化稳定策略的动机完全不同。在这里,我们假设玩家的策略是生物编码的,是可遗传的。个人无法控制他们的策略,也不需要意识到这个游戏。它们繁殖后代,受自然选择的影响,这种游戏的回报代表着繁殖成功(生物适应性)。可以想象,这个游戏的替代策略偶尔会发生,通过一个类似突变的过程。要成为一个 ESS,一个战略必须抵抗这些选择。
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进化均衡策略的动机则完全不同。该策略被假定为具有生物编码性而且可遗传至下一代。玩家个人并不能控制自己的策略,也无需了解游戏规则。他们繁殖并服从自然选择,而游戏的收益则代表着繁殖成功(生物适应性)。同时可以想象,在繁殖过程中,游戏策略偶尔会通过类似基因突变而无计划地发生变异,产生其方案策略。之后他们会通过互相抵制直到出现最优势的策略,即进化均衡策略。
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Given the radically different motivating assumptions, it may come as a surprise that ESSes and Nash equilibria often coincide. In fact, every ESS corresponds to a Nash equilibrium, but some Nash equilibria are not ESSes.
 
Given the radically different motivating assumptions, it may come as a surprise that ESSes and Nash equilibria often coincide. In fact, every ESS corresponds to a Nash equilibrium, but some Nash equilibria are not ESSes.
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考虑到激励因素完全不同的假设,ESSes 和纳什均衡往往是一致的,这可能会让人感到惊讶。事实上,每个 ESS 对应于一个纳什均衡点,但是有些纳什均衡不是 ESSes。
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考虑到本质上全然不同的动机假设,进化均衡策略和纳什平衡偶尔的一致性可能令人港澳惊讶。实际上,每个进化均衡策略都有对应的纳什平衡,但是某些纳什平衡却不同于进化均衡策略。
 
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== Nash equilibrium ==
 
== Nash equilibrium ==
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