Values for the Normalization step

[PabloRR100]

Hi Dmitry,

I have one question. Why using ((0.5, 0.5, 0.5), (0.5, 0.5, 0.5)) for the Normalize in the SVHN?

That values are the ones you want your input to be modified so the fit into that distribution? Or you need to imput your actual mean and standard deviation of each channel to get normilized?

Also, why sometimes there are other configuration of values?
I don't understand why still with those parameters I have negative values in the images.

Thanks a lot in advance.

Pablo