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Hallucinations in Large Language Models (LLMs) pose a significant challenge, generating misleading or unverifiable content that undermines trust and reliability. Existing evaluation methods, such as KnowHalu, employ multi-stage verification…

计算与语言 · 计算机科学 2026-04-10 Chenggong Zhang , Haopeng Wang , Hexi Meng

Hallucination occurs when large language models exhibit behavior that deviates from the boundaries of their knowledge during response generation. To address this critical issue, previous learning-based methods attempt to finetune models but…

计算与语言 · 计算机科学 2025-05-27 Xueru Wen , Jie Lou , Xinyu Lu , Ji Yuqiu , Xinyan Guan , Yaojie Lu , Hongyu Lin , Ben He , Xianpei Han , Debing Zhang , Le Sun

Hallucinations in large language models (LLMs) refer to the phenomenon of LLMs producing responses that are coherent yet factually inaccurate. This issue undermines the effectiveness of LLMs in practical applications, necessitating research…

计算与语言 · 计算机科学 2024-06-11 Weihang Su , Changyue Wang , Qingyao Ai , Yiran HU , Zhijing Wu , Yujia Zhou , Yiqun Liu

While Large Language Models (LLMs) demonstrate impressive capabilities, they still struggle with generating factually incorrect content (i.e., hallucinations). A promising approach to mitigate this issue is enabling models to express…

计算与语言 · 计算机科学 2025-06-05 Ruihan Yang , Caiqi Zhang , Zhisong Zhang , Xinting Huang , Sen Yang , Nigel Collier , Dong Yu , Deqing Yang

On-the-fly retrieval of relevant knowledge has proven an essential element of reliable systems for tasks such as open-domain question answering and fact verification. However, because retrieval systems are not perfect, generation models are…

计算与语言 · 计算机科学 2023-11-15 Zhiruo Wang , Jun Araki , Zhengbao Jiang , Md Rizwan Parvez , Graham Neubig

Detecting content that contradicts or is unsupported by a given source text is a critical challenge for the safe deployment of generative language models. We introduce HALT-RAG, a post-hoc verification system designed to identify…

计算与语言 · 计算机科学 2025-09-10 Saumya Goswami , Siddharth Kurra

Large Language Models (LLMs) are widely used in critical fields such as healthcare, education, and finance due to their remarkable proficiency in various language-related tasks. However, LLMs are prone to generating factually incorrect…

While hallucinations of large language models could been alleviated through retrieval-augmented generation and citation generation, how the model utilizes internal knowledge is still opaque, and the trustworthiness of its generated answers…

计算与语言 · 计算机科学 2025-04-22 Jiajun Shen , Tong Zhou , Yubo Chen , Delai Qiu , Shengping Liu , Kang Liu , Jun Zhao

While Large Language Models have transformed how we interact with AI systems, they suffer from a critical flaw: they confidently generate false information that sounds entirely plausible. This hallucination problem has become a major…

人工智能 · 计算机科学 2025-10-28 Piyushkumar Patel

Numerical reasoning is an essential ability for NLP systems to handle numeric information. Recent research indicates that fine-tuning a small-scale model to learn generating reasoning processes alongside answers can significantly enhance…

计算与语言 · 计算机科学 2024-02-19 Dingzirui Wang , Longxu Dou , Xuanliang Zhang , Qingfu Zhu , Wanxiang Che

Retrieval-Augmented Generation (RAG) improves the factuality of large language models (LLMs) by grounding outputs in retrieved evidence, but faithfulness failures, where generations contradict or extend beyond the provided sources, remain a…

计算与语言 · 计算机科学 2026-02-12 Guangzhi Xiong , Zhenghao He , Bohan Liu , Sanchit Sinha , Aidong Zhang

Clarification questions help conversational search systems resolve ambiguous or underspecified user queries. While prior work has focused on fluency and alignment with user intent, especially through facet extraction, much less attention…

计算与语言 · 计算机科学 2026-01-21 Ahmed Rayane Kebir , Vincent Guigue , Lynda Said Lhadj , Laure Soulier

Empowered by the large-scale pretrained language models, existing dialogue systems have demonstrated impressive performance conducting fluent and natural-sounding conversations. However, they are still plagued by the hallucination problem,…

计算与语言 · 计算机科学 2024-04-05 Jifan Yu , Xiaohan Zhang , Yifan Xu , Xuanyu Lei , Zijun Yao , Jing Zhang , Lei Hou , Juanzi Li

Large language models (LLMs) have significantly advanced in reasoning tasks through reinforcement learning (RL) optimization, achieving impressive capabilities across various challenging benchmarks. However, our empirical analysis reveals a…

计算与语言 · 计算机科学 2025-11-07 Junyi Li , Hwee Tou Ng

Large Language Models (LLMs) frequently hallucinate, impeding their reliability in mission-critical situations. One approach to address this issue is to provide citations to relevant sources alongside generated content, enhancing the…

计算与语言 · 计算机科学 2024-07-16 Rami Aly , Zhiqiang Tang , Samson Tan , George Karypis

We introduce the task of entity-centric query refinement. Given an input query whose answer is a (potentially large) collection of entities, the task output is a small set of query refinements meant to assist the user in efficient domain…

计算与语言 · 计算机科学 2022-09-19 David Wadden , Nikita Gupta , Kenton Lee , Kristina Toutanova

Hallucination detection is critical for ensuring the reliability of large language models (LLMs) in context-based generation. Prior work has explored intrinsic signals available during generation, among which attention offers a direct view…

计算与语言 · 计算机科学 2026-02-23 Siya Qi , Yudong Chen , Runcong Zhao , Qinglin Zhu , Zhanghao Hu , Wei Liu , Yulan He , Zheng Yuan , Lin Gui

Retrieval-Augmented Generation (RAG) models are designed to incorporate external knowledge, reducing hallucinations caused by insufficient parametric (internal) knowledge. However, even with accurate and relevant retrieved content, RAG…

计算与语言 · 计算机科学 2025-01-22 Zhongxiang Sun , Xiaoxue Zang , Kai Zheng , Yang Song , Jun Xu , Xiao Zhang , Weijie Yu , Yang Song , Han Li

The fast development of Large Language Models (LLMs) offers growing opportunities to further improve sequential recommendation systems. Yet for some practitioners, integrating LLMs to their existing base recommendation systems raises…

信息检索 · 计算机科学 2025-04-17 Nanshan Jia , Chenfei Yuan , Yuhang Wu , Zeyu Zheng

Despite the success of large language models (LLMs) in various natural language processing (NLP) tasks, the stored knowledge in these models may inevitably be incomplete, out-of-date, or incorrect. This motivates the need to utilize…

计算与语言 · 计算机科学 2023-01-03 Hangfeng He , Hongming Zhang , Dan Roth