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News/Do LLMs Know What They Know? Measuring Metacognitive Efficiency with Signal Detection Theory
arxiv
PublishedJuly 31, 2026 at 4:00 AM
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Do LLMs Know What They Know? Measuring Metacognitive Efficiency with Signal Detection Theory

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arXiv:2603.25112v3 Announce Type: replace-cross Abstract: Standard evaluation of LLM confidence relies on calibration metrics (ECE, Brier score) that conflate two capacities: how much a model knows (Type-1 accuracy) and how well its confidence signal tracks that knowledge (Type-2 metacognitive sensi

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