1. The paper in general does not read well, and more careful proofreading is needed. 2. In S2D structure, it is not clear why the number of parameters does not change. If the kernel height/width stay the same, then its depth will increase, resulting in more parameters. I agree the efficiency could be improved since the FLOP is quadratic on activation side length. But in terms of parameters, more details are expected.
2. In S2D structure, it is not clear why the number of parameters does not change. If the kernel height/width stay the same, then its depth will increase, resulting in more parameters. I agree the efficiency could be improved since the FLOP is quadratic on activation side length. But in terms of parameters, more details are expected.