Sigmoid Focal Loss vs Cross Entropy Loss

[artest08]

Hello,

First of all, thank you for your contribution to the literature. This paper has become an inspiring study for us.

What I want to ask is why you prefer sigmoid focal loss instead of cross entropy loss? If I understand correctly, Mask2Former study is the study that you have benefitted from. In there, cross entropy loss is utilized.

Is there a performance difference between both of them? Did you ablate it?