Preprint
Aug 2026
Improving Generalization Robustness of Multimodal RLVR
Reinforcement Learning with Verifiable Rewards (RLVR) makes Multimodal Large Language Models more accurate, but the gains are brittle: simply paraphrasing a question or changing the prompt template can degrade them, which challenges reliable deployment in high-stakes scenarios like medical VQA. We trace this to two iss...
P. Zhou, Zhiwei Tang, Xiaopeng Peng et al.
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