2025
Your Finetuned Large Language Model is Already a Powerful Out-of-distribution Detector
AISTATS 2025poster
We revisit the likelihood ratio between a pretrained large language model (LLM) and its finetuned variant as a criterion for out-of-distribution (OOD) detection. The intuition behind such a criterion is that, the pretrained LLM has the prior knowledge about OOD data due to its large amount of traini…