NaN validation loss while training the phase 1

[ThanhNguyenTung]

Thanks for sharing your ideas and source code. It is interesting.

I re-implement your model in tensorflow 2. While training the validation loss is NaN. Did you encounter this problem? If yes, how did you solve this.

Thanks again.

[clks-wzz]

Which "gradient type" do you use here? https://github.com/clks-wzz/FAS-SGTD/blob/master/fas_sgtd_single_frame/util/util_network.py#L57
I recommend that you can try "gradient_type == 'type1'".

[ThanhNguyenTung]

I saw that. It does fix the problem. Thank you.