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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2019/08/31 16:40:34 UTC

[GitHub] [incubator-mxnet] wkcn commented on issue #16014: NumPy-compatible Mean, Std and Var

wkcn commented on issue #16014: NumPy-compatible Mean, Std and Var
URL: https://github.com/apache/incubator-mxnet/pull/16014#issuecomment-526845577
 
 
   Hi @haojin2 @reminisce , I have a question: do we need Welford algorithm to compute the variance?
   "It is often useful to be able to compute the variance in a single pass, inspecting each value x_i only once"
   
   https://en.wikipedia.org/wiki/Algorithms_for_calculating_variance

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