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News/Do LLMs Know What They Know? Measuring Metacognitive Efficiency with Signal Detection Theory
arxiv
PublishedJuly 16, 2026 at 4:00 AM

Do LLMs Know What They Know? Measuring Metacognitive Efficiency with Signal Detection Theory

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arXiv:2603.25112v2 Announce Type: replace Abstract: Standard evaluation of LLM confidence relies on calibration metrics (ECE, Brier score) that conflate how much a model knows (Type-1 accuracy) with how well its confidence signal tracks that knowledge (Type-2 metacognitive sensitivity). We apply Sig

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