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习题11-1 about solutions HOT 4 OPEN

Drdajie avatar Drdajie commented on August 16, 2024
习题11-1

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Comments (4)

JiaminL avatar JiaminL commented on August 16, 2024

我想问问,上述解答中的不等于都是怎么推导出来的?

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Drdajie avatar Drdajie commented on August 16, 2024

解答

这边严格的证明方法我也不清楚,我记得好像西瓜书其中一个的证明就是这样简单说了下。
例如最后一个不等式,其实就看了下没办法再化简、变换成两个条件概率了。
很久没看这些了,后面可能也不做算法了。

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Rosenberg37 avatar Rosenberg37 commented on August 16, 2024

我想问问,上述解答中的不等于都是怎么推导出来的?

不等于是指一般条件下不等于,其实也存在等于的情况;只要能举出一种联合概率分布的反例使得其满足不等关系就算证明了。

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