Mistake in AdaCos layer implementation

[rose-jinyang]

Hello
how are you?
Thanks for contributing your project.
I have a question.
u said that the parameters of AdaCos are adjusted automatically.
However, I found that the parameters are fixed in your project.
Could u explain this in detail.
Thanks

[rose-jinyang]

Hi
Moreover, I found that AdaCos layer is same as ArcFace layer in your project.


How can I understand this confusing?

[shinmura0]

AdaCos is a special case of ArcFace.
So, code is same.

Difference is giving parameter.

Paper is below.
https://arxiv.org/abs/1905.00292

And AdaCos is two case.

• Fixed scale parameter ((12) in paper)
• Dynamically adaptive scale parameter((14) in paper)

I implemented fixed scale parameter.

[rose-jinyang]

Thanks for your reply.
Could u implement dynamic scale parameter?
Thanks

[shinmura0]

Unfortunately, I cannot implement dynamic scale parameter.
But Fixed AdaCosa is equal to or better than ArcFace.