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Post Batch Normalization Statistics

yuxiaoguo edited this page Sep 9, 2016 · 18 revisions

Post Batch Normalization Statistics

Post batch normalization statistics (PBN) is the CNTK version of how to evaluate the population mean and variance of Batch Normalization which could be used in inference Original Paper.

Why needs PBN?

Although the running statistics of mean and variance, in training, could be used in evaluate or test, there are two factor impacting the statistics accuracy:

Flow

PBN is called after all other parameters are frozen, normally after the training.

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