problems about foot skating

[ktxu1224]

@HalfSummer11 @kfiraberman
Hello, thx for your excellent work. I have read your published paper, but I have some questions about foot skating.

(1) It is said in the paper that "built upon 1D temporal convolution layers, raw outputs tend to suffer from foot skating artifacts", how to explain it? In my opinion, 1D temporal convolution layers ignore the connection relationship between joints, so it will cause foot skating, Right?
(2) How to understand the sentence in the paper that " extract foot contact labels from the content input, use them to correct the feet positions"? Any more detailed explaination for my reference?

Ericbin
Thx a lot!