Why are the biases set to zero in the training of GAN?

[hshustc]

I found that in some implementations of GAN, the biases of convolution layers in both Generator and Discriminator are set to zero before updating. I am wondering if you can tell the reason why this is happening. Thanks a lot.

refer to:

1. https://github.com/reedscot/icml2016 -> main_cls_int.lua -> line 310-311 and line 395-396.
2. https://github.com/phillipi/pix2pix -> train.lua -> line 232-233 and line 262-263