papersSEP 12 04:00 UTC
ActMap: Single-pass uncertainty quantification from generation-time activation maps
A new arXiv preprint introduces ActMap, a method that estimates how much an LLM answer should be trusted using internal activation maps captured during a single generation pass. The authors position it as an alternative to approaches that require multiple sampled outputs or rely solely on output-token probabilities. The work targets practical uncertainty quantification for large language models.