简单区分 standard error 与 standard deviation

exacity / deeplearningbook-chinese

Deep Learning Book Chinese Translation

https://exacity.github.io/deeplearningbook-chinese

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简单区分 standard error 与 standard deviation #194

Closed jlh2018 closed 5 years ago

jlh2018 commented 5 years ago

严格的讲，standard error (se) 与 standard deviation (sd) 是两个概念。The standard error is ... an estimate of that standard deviation (摘自 wikipedia). 可以简单理解为，sd是理论值，se是计算值，在实际计算中，se会无限逼近sd。