about mask loss is different between paper and code in stage II

[helen0461]

Thx for your job and sharing. It's really helpful to my research. Thanks again.
I have trained and tested your model successfully, and have a litte question about loss.
When I train in satge II, the mask loss almost have not change from the beigining to the end.
So, I check the calculation abouot mask loss, and find that the "loss_mask = criterionMask(m_composite, cm)" in line 133 of train.py is differernt from the equation (4) in paper.
Is there any detail about this I can konw?
Thank you a lot.
@sergeywong

[Hanv2]

i think the loss in code can achieve expectation that makes model concentrated more on the cloth region while preserving the background of the person in clothing‘s image.