MRPO is a step-aware RL method that penalizes early reasoning errors exponentially more when the final answer is incorrect, reducing early-stage failures from 64% to 13% and outperforming baselines including larger models on medical VQA tasks.
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Breaking Failure Cascades: Step-Aware Reinforcement Learning for Medical Multimodal Reasoning
MRPO is a step-aware RL method that penalizes early reasoning errors exponentially more when the final answer is incorrect, reducing early-stage failures from 64% to 13% and outperforming baselines including larger models on medical VQA tasks.