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REVA-PO: Stabilizing Reinforcement Learning for Chest X-ray Report Generation

Guo, Li et al.
arXiv (All) · Papers
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Automated chest X-ray report generation has recently benefited from reinforcement learning (RL) and large language models. However, RL training often suffers from instability or limited exploration due to fixed Kullback-Leibler (KL) regularization and a static reference policy that accumulates KL pr
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