About Bone modality with k=2

[anhvu2501]

Hi, thank you for your great work! I am trying to implement the idea of using the Bone modality with k = 2 (distance between 2 joints is equal to 2 as I understand). But when I tried to train this modality on STGCN baseline (input data is 3D skeleton), the result that I received is not good. Hence, could you help me to address this problem? Did I implement the bone modality with k = 2 incorrectly? This is the implementation that I forked from https://github.com/kennymckormick/pyskl to try. The above is the bone modality with k = 1, the rest is the bone modality with k = 2.

Thank you!