Policy Gradient Methods

Loss modules for policy gradient algorithms.

PPOLoss(*args, **kwargs)	A parent PPO loss class.
ClipPPOLoss(*args, **kwargs)	Clipped PPO loss.
KLPENPPOLoss(*args, **kwargs)	KL Penalty PPO loss.
A2CLoss(*args, **kwargs)	TorchRL implementation of the A2C loss.
ReinforceLoss(*args, **kwargs)	Reinforce loss module.