About foot contact loss

[Jatinkalal]

Hi, in your code you have defined a foot contact loss where it nullifies velocities of the foot with respect to the foot contact labels, however you have mentioned that you did not use it (in the comments of that function)...
So what difference does it make if we use that as our foot contact loss, instead of what was mentioned in the paper by using forward kinematics function and then using foot contact labels?

Thank you.

[Jatinkalal]

I was referring to this foot_contact_loss_humanml3d, I found this in diffusion/gaussain_diffusion.py
Could you explain more about this?