V2EX pure strategy

Pure Strategy

定义 Definition

Pure strategy(纯策略):在博弈论中,指参与者在每一种可能情形下都选择一个确定不变的行动方案;不包含随机性。与之相对的是 mixed strategy(混合策略),后者会以概率方式在多个行动间随机选择。

发音 Pronunciation (IPA)

/pjr strtdi/

例句 Examples

In this game, each player has a pure strategy: choose A or choose B.
在这个博弈中,每个玩家都有一个纯策略:选择A或选择B。

Even when a pure strategy equilibrium doesn’t exist, we can analyze outcomes by comparing pure strategies and then considering mixed strategies.
即使不存在纯策略均衡,我们也可以先比较各种纯策略的结果,再进一步考虑混合策略。

词源 Etymology

pure 源自拉丁语 purus,意为“纯的、无杂质的”,在这里强调“不掺杂随机”。strategy 源自希腊语 stratēgia,原指“将军的统帅/用兵之道”,后来泛指“策略、方案”。合起来 pure strategy 就是“完全确定的策略选择”。

相关 Related Words

文学与经典著作 Literary Works

  • John von Neumann & Oskar Morgenstern, Theory of Games and Economic Behavior(《博弈论与经济行为》)
  • Martin J. Osborne & Ariel Rubinstein, A Course in Game Theory(《博弈论教程》)
  • R. Duncan Luce & Howard Raiffa, Games and Decisions(《博弈与决策》)
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