来自《耶鲁大学开放课程：博弈论 第9集 第9集》

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  of the expected payoffs of each of the pure strategies in the mix.
  每个纯策略预期收益的加权平均数
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  So this is a long way of saying something again
  我们费了很多工夫来解释混合策略
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  which I think is a little bit obvious,
  我觉得它其实很容易理解
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  but let me just say it again.
  但我还是再说一遍吧
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  The way in which we figure out the expected payoff of a mixed strategy is,
  计算混的策略预期收益的方法是
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  we take the appropriately weighted average of the expected payoffs
  实际上就是求出该混合策略中
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  I would get from the pure strategies over which I'm mixing.
  纯策略预期收益的加权平均数
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  So to make that less abstract let's immediately look at an example.
  我们一起看一个例子吧
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  So here's an example we'll come back to several times,
  这个例子以后会经常遇到
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  but just once today, and this a game you've seen before.
  今天只讲一次 你们都见过这个例子
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  Here is the game Battle of the Sexes,
  其实就是性别大战这个博弈
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  in which Player A can choose... Player I can choose A and B,
  参与人I可选策略为A和B