Learning Without Critics? Revisiting GRPO in Classical Reinforcement Learning Environments
NeutralArtificial Intelligence
Learning Without Critics? Revisiting GRPO in Classical Reinforcement Learning Environments
A new study on Group Relative Policy Optimization (GRPO) has been released, highlighting its potential as a scalable alternative to Proximal Policy Optimization (PPO). By removing the learned critic and using group-relative comparisons of trajectories, GRPO simplifies the process and raises important questions about the role of learned baselines in policy-gradient methods. This research is significant as it could reshape how reinforcement learning is approached, making it more efficient and effective.
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