Meiling Zhu

Beyond Semantic Equivalence: Logical Graphs for LLM Uncertainty Quantification

Yanni Dong, Minghua Liu, Meiling Zhu, Xiaowei Huang, Lijun Zhang

Large Language Models (LLMs) often produce confidently stated yet unreliable outputs, posing critical challenges for deployment in safety-sensitive applications. Existing uncertainty metrics such as semantic entropy capture agreement at the level of semantic equivalence, but larg…Read more