llm-judges-can-be-too-generous-when-there-is-no-reference-answer-0979d54a·1 events·first seen Aliases: LLM Judges Can Be Too Generous When There Is No Reference Answer
A new arXiv paper investigates the reliability of LLM-as-judge evaluation in no-reference settings, finding that judge models systematically over-credit incorrect answers when no ground-truth is provided. Sensitivity experiments across three languages show that adding reference answers to prompts flips correct/incorrect decisions by up to 85% in some settings, with these changes aligning with human annotations. The authors propose a calibration methodology—testing judge knowledge with reference-aware samples before deploying in reference-free setups—as a blueprint for practitioners.