errD_real 和 errD_fake 分别backward和 这两个loss加起来用errD去backward有区别吗

[jehovahxu]

我试过按照代码中errD_fake和errD_real分别backward，D网络和G网络以及L1的loss都能下降，用errD去backward，errD_real迅速降到零，errD_fake一直在上升，这是为什么呢

[jianingwangind]

Hi, have you already found the anwser? I have also met thie problem and i cant tell the difference when i use errD for the backpropogation since its only a sum so it shoulnt influence the result at all. Looking forward to your reply

[jehovahxu]

@jianingwangind It is caused by label