论文研究 arXiv cs.AI Mon, 13 Jul 2026 正文 thin 4 words

Multimodal Reward Hacking in Reinforcement Learning

英文标题:Multimodal Reward Hacking in Reinforcement Learning

arXiv:2607.09492v1 Announce Type: new Abstract: Reinforcement learning (RL) is increasingly used to align multimodal large language models (MLLMs), but higher rewards do not always imply better task performance. This risk is amplified when visual evidence is evaluated by text-only or weakly grounde
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arXiv:2607.09492v1 Announce Type: new Abstract: Reinforcement learning (RL) is increasingly used to align multimodal large language models (MLLMs), but higher rewards do not always imply better task performance. This risk is amplified when visual evidence is evaluated by text-only or weakly grounde

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