LLM Hallucination Detection: A Fast Fourier Transform Method Based on Hidden Layer Temporal Signals.

Jinxin Li Gang Tu ShengYu Cheng Junjie Hu Jinting Wang Rui Chen Zhilong Zhou Dongbo Shan LLM Hallucination Detection: A Fast Fourier Transform Method Based on Hidden Layer Temporal Signals. 2025 September abs/2509.13154 CoRR https://doi.org/10.48550/arXiv.2509.13154 db/journals/corr/corr2509.html#abs-2509-13154 streams/journals/corr