What is the layer Relative Mask Attention in the code?

[phanben110]

What is the layer Relative Mask Attention in the code? I am trying to understand the implementation and concept of Relative Mask Attention and Mask Patch Tokens, but I cannot.

[zh-ding]

Hi, thanks for your interest in our work! The codes of mask class token can be found in this reply: #2 (comment)
Feel free to let me know if you have more questions.