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arxiv_cs_lg · Nov 10, 2026 · paper

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Multimodal Abstention That Preserves Acquired Correct Answers

arxiv.orgNov 10, 2026
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In brief

Adding abstention to a task-adapted multimodal model can discard correct answers, including capabilities acquired during adaptation. We formulate abstention repair as maximizing correct abstention on unanswerable questions under a budget on newly lost correct answers. We propose

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Multimodal Abstention That Preserves Acquired Correct Answers

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