CORTEX: Token-Level Hallucination Detection in RAG via Comparative Internal Representations

Kazuaki Furumai, Shuichiro Haruta, Kazunori Matsumoto +1

In this paper, we propose CORTEX, a token-level hallucination detection method for Retrieval-Augmented Generation (RAG). In long-form RAG outputs, hallucinations often arise in loc…