Comments (5)
The definition of logit is from this paper: https://arxiv.org/pdf/1701.06548.pdf (z_i in Section 3). It originally means the values that are fed into Softmax loss, and we define the target logit as the logit which is corresponding to the ground truth label.
In the original Softmax, the target logit is W_y^T f
. In AM-Softmax, we normalize the W
and f
and modify the target logit to be s*(W_y^T f - m)
. Here y
is the ground-truth label of the optimizing sample.
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hi,I read your target logit curves matlab code on your github draw_psi_curve.m ,I always feel the Angular softmax and AM softmax curves plot the ψ(θ).but conventional softmax plot cos(θ), the target logit is W_y^T f.Angular softmax target logit ||f|| ψ(θ),I feel not corresponding.
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You are right. I will change the y-label to ψ(θ) in the final version of my paper.
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I do not know whether arcface target logit curves have also the problem.
from amsoftmax.
Yeah... ArcFace shows a similar figure, and suffers from the same problem.
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Related Issues (20)
- The way of using AMSoftmax HOT 4
- iter_size问题 HOT 1
- CASIA-Webface dataset download link HOT 31
- Compare AMSoftmax with ArcFace HOT 1
- Have you ever tried batch normalization? HOT 4
- lfw准确率为99.73是如何得到的?使用的什么数据集! HOT 12
- What is gnap prototxt for? HOT 1
- How to debug margin and scale? HOT 3
- auto margin HOT 5
- how does the loss converge HOT 1
- Where is fc6 in face_train_test.prototxt? HOT 2
- how to set the m and s when there are only 1000 identities? HOT 5
- Test Problem HOT 2
- when set a mini-batch to model input the time of calculation won't decreade
- flip in face_deploy_mirror_normalize.prototxt doesn't work properly
- Training without alignment
- high similarity between abnormal face images HOT 2
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