About Mask_Module

[SummerTide]

Dear authors, thanks for your kindly sharing of code. Your work is very impressive and helpful. But when I try to understand your work, I found that in your code you actually use the response layer to generate the mask
https://github.com/hunto/MasKD/blob/main/segmentation/train_mask_module.py#L232
https://github.com/hunto/MasKD/blob/main/segmentation/train_mask_module.py#L175
But the article says that this article is feature-based. How do I understand this? I didn’t find any place in the code where the feature is used. Is there something else I missed? Could you share more details related with Mask_Module? Looking forward your reply.