
Rationale-Guided Policy Optimization: Learning to Reason with Adaptive Rationale Scaffolding
RGPO adaptively uses ground-truth rationales as temporary scaffolds to generate improved responses for on-policy RL, then transfers only higher-reward model outputs back, reducing reward sparsity and improving text and multimodal reasoning.
Published Oct 5, 2026 · ▲ 21 on Hugging Face · Code ★ 1
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