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cs.CL2026
When the Wrong Key Wins: Understanding and Detecting Hallucinations in LLMs
Xuhan Tong, Jiawei Zhang, Haoyue Bai +3
Large language models can hallucinate even when the knowledge required for a correct answer is already available. We study this failure through a latent-key view of inference, wher…
cs.CL2026
Understanding Why Language Models Hallucinate: Testing Reasoning Against Priors
Yangfan Hu, Xuhan Tong, Haoyue Bai +5
Large language models often produce hallucinated answers that violate prompt-level constraints. A key diagnostic question is whether these failures reflect missing knowledge, or wh…