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Re:第二、三行很容易懂,第一行很难懂:(用)二分(试探)平均值,再减去这个平均值……

Posted by uni at 2005-04-19 13:21:17 on Problem 2018
In Reply To:第二、三行很容易懂,第一行很难懂:(用)二分(试探)平均值,再减去这个平均值…… Posted by:frkstyc at 2005-04-19 13:15:08
是这样的,每个点不是都有一个给你的值吗,每个点的这个值都减去平均值(也就是只看增加量)
这样,如果有某几个点的和大于0了,那么它们原始的值的平均值一定大于试探的平均值

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