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symmetry augmentation affect only lower-body policy update #35

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@wanyu2211nini

Hi, thanks for your suggestion on symmetric data augmentation.

In FALCON decoupled training, I want to apply symmetry only to lower-body actions.
Upper body is tracking-driven, so it may not satisfy a left-right symmetry prior.

My question is:

How can I make symmetry augmentation affect only lower-body policy update, while still letting lower-body actor observe upper-body state/disturbance for balance compensation?

More specifically, I want:

Symmetry constraint on lower-body action dims only.
Upper-body tracking-related obs not to inject wrong symmetry prior into lower-body augmentation.
Lower-body actor still keeps upper-body disturbance/state inputs to react to arm-induced perturbations.
What is the recommended way in FALCON for this partial-symmetry setup?

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