loss

[hydxqing]

Why do my output loss_G and loss_D are opposite to each other? In your code, loss_G and loss_D are just symbols different. And after this training is completed, the predictions are all nan. Why is this so?
I really hope to hear from you.

[douhe66]

Because the denominator may be 0 in the calculate of iou and dice, you can replace the np.mean() with np.nanmean().

[douhe66]

I am also have a problem with the loss_G and loss_D, actually, I changed the symbol of the loss_D, but the results do not seem to differ. Is anyone could explain it?

[YuanXue1993]

This shouldn't be happening, maybe you can try to train with the adversarial loss alone (i.e., w/o the dice loss, which was put there to help stabilize the adversarial training). In that case, changing the symbol should just make the whole training fail.