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zqnnn avatar zqnnn commented on July 20, 2024

请问一下,我想在自己的数据上训练,是不是应该先训练基础的Sphere64,再固定之前的训练不确定模块?Sphere64网络的训练有代码可以参考吗?

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Ontheway361 avatar Ontheway361 commented on July 20, 2024

从数学公式上来看,negMLS不能保证非负。老铁,加个微信讨论下细节哈,我wechat:On_theway24,备注一下是PFE模型讨论哈。

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twmht avatar twmht commented on July 20, 2024

@Ontheway361

從 PAPER 的 Equation(3) 來看,會導致出現負號的原因是因為加了 log 嗎

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twmht avatar twmht commented on July 20, 2024

只要可以保證 log(σ2(l)i+σ2(l)j) 為正的話,基本上就是 negMLS 就是恆正了

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Ontheway361 avatar Ontheway361 commented on July 20, 2024

@twmht , 事实上,不能保证 log(σ2(l)i+σ2(l)j) > 0!

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twmht avatar twmht commented on July 20, 2024

@Ontheway361

我覺得應該 log 裡面要加個 exp?

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Ontheway361 avatar Ontheway361 commented on July 20, 2024

坦白来说,我认为论文中的公式(3)是错误的,我自己没有推导出来,然后发邮件咨询作者,作者也不回复邮件。所以,我觉得这篇文章就是垃圾,推荐你看CVPR-2020的一篇paper :Data Uncertainty Learning in Face Recognition.

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twmht avatar twmht commented on July 20, 2024

@Ontheway361

那篇我知道呀! 但目前沒有 source code 不好複製

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twmht avatar twmht commented on July 20, 2024

PFE 的 similarity 沒有上限,但作者似乎也沒給一個實驗建議值

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hungsing92 avatar hungsing92 commented on July 20, 2024

推不出来公式3+1

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