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News/ActMap: Single-Pass Uncertainty Quantification from Generation-Time Activation Maps
arxiv
PublishedSeptember 12, 2026 at 4:00 AM

ActMap: Single-Pass Uncertainty Quantification from Generation-Time Activation Maps

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arXiv:2609.11498v1 Announce Type: new Abstract: Practical uncertainty quantification (UQ) for large language models must decide, from a single generation, whether a specific answer should be trusted. Existing methods either sample multiple generations, read only output-token probabilities, or reduce

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