Large language models (LLMs) can generate fluent natural language texts when given relevant documents as background context. This ability has attracted considerable interest in developing industry applications of LLMs. However, LLMs are prone to generate hallucinations that are not supported by the provided sources. In this paper, we propose a hierarchical framework to detect and mitigate such ungrounded hallucination. Our framework uses Chain of Natural Language Inference (CoNLI) for hallucination detection and hallucination reduction via post-editing. Our approach achieves state-of-the-art performance on hallucination detection and enhances text quality through rewrite, using LLMs without any fine-tuning or domain-specific prompt engineering. We show that this simple plug-and-play framework can serve as an effective choice for hallucination detection and reduction, achieving competitive performance across various contexts.

提出了一个使用自然语言推理链 (CoNLI) 来进行幻觉检测和幻觉减少的层次性框架，通过后期编辑来减少幻觉生成，从而提升文本质量。该框架在幻觉检测方面取得了最先进的性能，并在不进行微调或特定领域提示工程的情况下，使用大型语言模型 (LLMs) 进行重写，展示出了在各种上下文中具有竞争力的性能。

用于减少大型语言模型无根幻觉的自然语言推理链