Citation Grounding Measures the Oracle: Graph Coverage Determines Reported LLM Hallucination Rates in Law
引用溯源:通过法律引用图检测和减少LLM引用幻觉
机构 * LEX AI LLC
专题命中 幻觉与事实性 :DPO(summary_cn,abstract_cn);trustworthy(abstract);分类 cs.CL
AI总结 提出引用溯源(CG)指标,利用乌克兰法院判决的引用图(1.008亿判决,5.02亿边)检测LLM法律引用幻觉,并通过CG-DPO方法(基于真实判决构建偏好对)减少幻觉,在100个法律查询上CG为0.791-0.873,幻觉率13-21%。
Comments 21 pages, 4 figures, 5 tables. Substantially revised: title, framing and several v1 results changed. Adds a coverage sweep and a separability analysis; corrects the DPO configuration, the density-accuracy correlation and the qualitative examples. Code and data: https://huggingface.co/datasets/overthelex/citation-grounding-eval