x110 commented on issue #12899: Gradient of BatchNorm layer URL: https://github.com/apache/incubator-mxnet/issues/12899#issuecomment-431800745 In the documentation of batchnorm, I found: `Both gamma and beta are learnable parameters. But if fix_gamma is true, then set gamma to 1 and its gradient to 0.` Why is` fix_gamma=True` the default behavior?
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