A question about the implementation of communication mask generation.

[Little-Podi]

Happy rabbit year! Can you please explain why we need reset the communication mask to ones with a stride of 2 in the following line (https://github.com/MediaBrain-SJTU/Where2comm/blob/5ea31dcc4e102fc45a3dfcc5bff0339ee06543ac/opencood/models/comm_modules/where2comm.py#L71)? I cannot find anything related to this part in your paper, and I think it will be very helpful for us!