以前和现在的 cosin_add_m scale 的实现区别是什么昵

[shiyuanyin]

以前的 层，是两个层，一个添加m角度，一个添加尺度64或者128
然后新的arcface合并只有一层， 没有scale 参数设置的值，但是这里和上面的实现的区别在哪里昵
layer {
name: "cosin_add_m"
type: "CosinAddm"
bottom: "temp_fc6"
bottom: "label"
top: "fc6_margin"
cosin_add_m_param {
m: 0.5
}
}
layer {
name: "fc6_margin_scale"
type: "Scale"
bottom: "fc6_margin"
top: "fc6_margin_scale"
param {
lr_mult: 0
decay_mult: 0
}
scale_param {
filler{
type: "constant"
value: 64
}
}

修改过后的addm 层
layer {
name: "adacos_add_m_scale"
type: "AdaCosAddmScale"
bottom: "fc6"
bottom: "label"
top: "fc6_margin_scale"
adacos_add_m_scale_param {
m: 0.5
num_classes: 10575
}
}

@xialuxi

[xialuxi]

S值根据学习的参数自动调整

[borisgribkov]

Hi @xialuxi first of all thanks for your code, I found that ArcFace caffe version is very useful and now is looking at AdaCos. As it seems for me, your version and published version are a bit different. Paper authors removed M parameter and made S adjustable ( or it can be determined ). In your code S is also adjustable but M is still present. Could you please comment this?