VGG - computing cam and use of sqrt

[saurabheights-ecr]

At line https://github.com/jiwoon-ahn/psa/blob/master/network/vgg16_cls.py#L36. CAM is weighted combination of feature maps, so not sure why sqrt is used.

Please, could you provide some clarification.

[Zhengyang1995]

I also want to know the answer for it, thanks