deepinsight / deepinsight/insightface

Bugs in a ArcFace implementation

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Description

Can somebody explain me why ArcFace class implementation was changed in this commit https://github.com/deepinsight/insightface/commit/657ae30e41fc53641a50a68694009d0530d9f6b3?
In my opinion, here are some bugs:
1) ArcFace has no_grad() in forward() which can give us wrong gradients
2) ArcFace object in forward() has no field `self.s`, instead of it has `self.scale`

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