这个一般准则包括了最大概率拟合、最小变化拟合、最小突变拟合等。

This optimality criterion contains maximal probability fits, minimal variation fits and minimal mutation fits.

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证明了在期望值决策准则下，用等概率分层随机抽样得到的方案收益期望值的均值，与用简单随机抽样得到的相同。

It is verified that th action's mean value of the expected value by simple radom sampling is equal to one by stratified radom sampling.

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