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How to derive mean and variance of a Gaussian?

时间:2016-04-11 06:58:57      阅读:179      评论:0      收藏:0      [点我收藏+]

PRML exercise 1.8:

To derive mean: change of variable z = x - u, use symmetry 

To derive variance: differentiate normaliation condition (integrate to 1) w.r.t. sigma^2. 

 

How to derive mean and variance of a Gaussian?

原文:http://www.cnblogs.com/shalijiang/p/5376766.html

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