How to initialize the parameter of `BatchNorm2d`

in pytorch? I mean `mean`

, `variance`

, `gamma`

and `beta`

. Actually I have a pretrained model in `keras`

with `tensorflow`

backend. Another thing which I want to mention that is the size of weight of each learnable parameter:

mean = (64,)

variance = (64,)

gamma = (64,)

beta = (64,)

Appreciating in advance for any response!