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Large language models (LLMs) have revolutionized natural language processing, yet their propensity for hallucination, generating plausible but factually incorrect or fabricated content, remains a critical challenge. This report provides a…

计算与语言 · 计算机科学 2025-08-05 Manuel Cossio

Large foundation models (LFMs) are susceptible to two distinct vulnerabilities: hallucinations and jailbreak attacks. While typically studied in isolation, we observe that defenses targeting one often affect the other, hinting at a deeper…

计算机视觉与模式识别 · 计算机科学 2025-06-02 Haibo Jin , Peiyan Zhang , Peiran Wang , Man Luo , Haohan Wang

Large language model (LLM) systems suffer from the models' unstable ability to generate valid and factual content, resulting in hallucination generation. Current hallucination detection methods heavily rely on out-of-model information…

计算与语言 · 计算机科学 2025-02-20 Peiran Wang , Yang Liu , Yunfei Lu , Jue Hong , Ye Wu

Despite the groundbreaking advancements made by large language models (LLMs), hallucination remains a critical bottleneck for their deployment in high-stakes domains. Existing classification-based methods mainly rely on static and passive…

机器学习 · 计算机科学 2026-05-12 Linggang Kong , Lei Wu , Yunlong Zhang , Xiaofeng Zhong , Zhen Wang , Yongjie Wang , Yao Pan

Retrieval Augmented Generation (RAG) systems remain vulnerable to hallucinated answers despite incorporating external knowledge sources. We present LettuceDetect a framework that addresses two critical limitations in existing hallucination…

计算与语言 · 计算机科学 2025-02-25 Ádám Kovács , Gábor Recski

Large language models (LLMs) have become pervasive in our everyday life. Yet, a fundamental obstacle prevents their use in many critical applications: their propensity to generate fluent, human-quality content that is not grounded in…

计算与语言 · 计算机科学 2025-10-30 Kensuke Mitsuzawa , Damien Garreau

As large language models continue to develop in the field of AI, text generation systems are susceptible to a worrisome phenomenon known as hallucination. In this study, we summarize recent compelling insights into hallucinations in LLMs.…

计算与语言 · 计算机科学 2023-09-14 Hongbin Ye , Tong Liu , Aijia Zhang , Wei Hua , Weiqiang Jia

Hallucination has been a long-standing and inevitable problem that hinders the application of Large Vision-Language Models (LVLMs) in domains that require high reliability. Various methods focus on improvement depending on data annotations…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Chao Wang , Jianming Yang , Yang Zhou

This paper introduces a comprehensive system for detecting hallucinations in large language model (LLM) outputs in enterprise settings. We present a novel taxonomy of LLM responses specific to hallucination in enterprise applications,…

计算与语言 · 计算机科学 2025-04-10 Bibek Paudel , Alexander Lyzhov , Preetam Joshi , Puneet Anand

Hallucination detection is critical for deploying large language models (LLMs) in real-world applications. Existing hallucination detection methods achieve strong performance when the training and test data come from the same domain, but…

人工智能 · 计算机科学 2026-02-20 Yongxin Deng , Zhen Fang , Sharon Li , Ling Chen

Knowledge hallucination have raised widespread concerns for the security and reliability of deployed LLMs. Previous efforts in detecting hallucinations have been employed at logit-level uncertainty estimation or language-level…

计算与语言 · 计算机科学 2024-10-22 Chao Chen , Kai Liu , Ze Chen , Yi Gu , Yue Wu , Mingyuan Tao , Zhihang Fu , Jieping Ye

Hallucination in a foundation model (FM) refers to the generation of content that strays from factual reality or includes fabricated information. This survey paper provides an extensive overview of recent efforts that aim to identify,…

人工智能 · 计算机科学 2023-09-13 Vipula Rawte , Amit Sheth , Amitava Das

Due to the unidirectional masking mechanism, Decoder-Only models propagate information from left to right. LVLMs (Large Vision-Language Models) follow the same architecture, with visual information gradually integrated into semantic…

计算机视觉与模式识别 · 计算机科学 2025-09-24 Jianfei Zhao , Feng Zhang , Xin Sun , Chong Feng

Large Language Models (LLMs) are trained on vast and diverse internet corpora that often include inaccurate or misleading content. Consequently, LLMs can generate misinformation, making robust fact-checking essential. This review…

Large language models frequently exhibit hallucinations: fluent and confident outputs that are factually incorrect or unsupported by the input context. While recent hallucination detection methods have explored various features derived from…

计算与语言 · 计算机科学 2026-04-14 Jakub Binkowski , Kamil Adamczewski , Tomasz Kajdanowicz

Hallucinations in LLMs present a critical barrier to their reliable usage. Existing research usually categorizes hallucination by their external properties rather than by the LLMs' underlying internal properties. This external focus…

Multimodal Large Language Models (MLLMs) often generate hallucinations, where the output deviates from the visual content. Given that these hallucinations can take diverse forms, detecting hallucinations at a fine-grained level is essential…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Yuiga Wada , Kazuki Matsuda , Komei Sugiura , Graham Neubig

Recent research on query generation has focused on using Large Language Models (LLMs), which despite bringing state-of-the-art performance, also introduce issues with hallucinations in the generated queries. In this work, we introduce…

计算与语言 · 计算机科学 2024-10-16 Zhongxiang Sun , Zihua Si , Xiaoxue Zang , Kai Zheng , Yang Song , Xiao Zhang , Jun Xu

Hallucination, a phenomenon where large language models (LLMs) produce output that is factually incorrect or unrelated to the input, is a major challenge for LLM applications that require accuracy and dependability. In this paper, we…

计算与语言 · 计算机科学 2025-04-01 Song Wang , Xun Wang , Jie Mei , Yujia Xie , Sean Muarray , Zhang Li , Lingfeng Wu , Si-Qing Chen , Wayne Xiong

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