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Large Language Models (LLMs) frequently generate plausible but non-factual content, a phenomenon known as hallucination. While existing detection methods typically rely on computationally expensive sampling-based consistency checks or…

机器学习 · 计算机科学 2026-05-07 Dan Wilson , Mohamed Akrout

Large Language Models (LLMs) exhibit impressive reasoning and question-answering capabilities. However, they often produce inaccurate or unreliable content known as hallucinations. This unreliability significantly limits their deployment in…

机器学习 · 计算机科学 2025-09-16 Minh Vu , Brian K. Tran , Syed A. Shah , Geigh Zollicoffer , Nhat Hoang-Xuan , Manish Bhattarai

Vision-Language Models (VLMs) are becoming increasingly popular in the medical domain, bridging the gap between medical images and clinical language. Existing VLMs demonstrate an impressive ability to comprehend medical images and text…

Object hallucination is a significant challenge that hinders the application of large vision-language models (LVLMs) in practice. We hypothesize that one possible origin of hallucination is the model's tendency to prioritize text generation…

计算机视觉与模式识别 · 计算机科学 2026-05-21 Meng Shen , Minghao Wu , Deepu Rajan

Despite achieving rapid developments and with widespread applications, Large Vision-Language Models (LVLMs) confront a serious challenge of being prone to generating hallucinations. An over-reliance on linguistic priors has been identified…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Lanyun Zhu , Deyi Ji , Tianrun Chen , Peng Xu , Jieping Ye , Jun Liu

Large Language Models (LLMs) have gained widespread adoption in various natural language processing tasks, including question answering and dialogue systems. However, a major drawback of LLMs is the issue of hallucination, where they…

计算与语言 · 计算机科学 2024-07-08 Yuyan Chen , Qiang Fu , Yichen Yuan , Zhihao Wen , Ge Fan , Dayiheng Liu , Dongmei Zhang , Zhixu Li , Yanghua Xiao

While many capabilities of language models (LMs) improve with increased training budget, the influence of scale on hallucinations is not yet fully understood. Hallucinations come in many forms, and there is no universally accepted…

While the problem of hallucinations in neural machine translation has long been recognized, so far the progress on its alleviation is very little. Indeed, recently it turned out that without artificially encouraging models to hallucinate,…

计算与语言 · 计算机科学 2022-12-21 David Dale , Elena Voita , Loïc Barrault , Marta R. Costa-jussà

Large Language Models (LLMs) have significantly advanced communications fields, such as Telecom Q\&A, mathematical modeling, and coding. However, LLMs encounter an inherent issue known as hallucination, i.e., generating fact-conflicting or…

网络与互联网体系结构 · 计算机科学 2024-12-10 Yinqiu Liu , Guangyuan Liu , Ruichen Zhang , Dusit Niyato , Zehui Xiong , Dong In Kim , Kaibin Huang , Hongyang Du

Detecting hallucinations in Retrieval-Augmented Generation remains a challenge. Prior approaches attribute hallucinations to a binary conflict between internal knowledge stored in FFNs and the retrieved context. However, this perspective is…

计算与语言 · 计算机科学 2026-04-20 Pengqian Lu , Jie Lu , Anjin Liu , Guangquan Zhang

This survey presents a comprehensive analysis of the phenomenon of hallucination in multimodal large language models (MLLMs), also known as Large Vision-Language Models (LVLMs), which have demonstrated significant advancements and…

计算机视觉与模式识别 · 计算机科学 2025-04-03 Zechen Bai , Pichao Wang , Tianjun Xiao , Tong He , Zongbo Han , Zheng Zhang , Mike Zheng Shou

Large Vision-Language Models (LVLMs) have demonstrated impressive multimodal reasoning capabilities, but they remain susceptible to hallucination, particularly object hallucination where non-existent objects or incorrect attributes are…

计算机视觉与模式识别 · 计算机科学 2025-08-06 Cong-Duy Nguyen , Xiaobao Wu , Duc Anh Vu , Shuai Zhao , Thong Nguyen , Anh Tuan Luu

Hallucinations in large language models (LLMs) present a growing challenge across real-world applications, from healthcare to law, where factual reliability is essential. Despite advances in alignment and instruction tuning, LLMs can still…

计算与语言 · 计算机科学 2025-05-02 Makoto Sato

Neural sequence generation models are known to "hallucinate", by producing outputs that are unrelated to the source text. These hallucinations are potentially harmful, yet it remains unclear in what conditions they arise and how to mitigate…

计算与语言 · 计算机科学 2023-02-28 Weijia Xu , Sweta Agrawal , Eleftheria Briakou , Marianna J. Martindale , Marine Carpuat

Hallucination has been a popular topic in natural language generation (NLG). In real-world applications, unfaithful content can result in poor data quality or loss of trust from end users. Thus, it is crucial to fact-check before adopting…

计算与语言 · 计算机科学 2025-02-11 Xiaonan Jing , Srinivas Billa , Danny Godbout

Large language models (LLMs) trained on datasets of publicly available source code have established a new state of the art in code generation tasks. However, these models are mostly unaware of the code that exists within a specific project,…

软件工程 · 计算机科学 2024-06-21 Aryaz Eghbali , Michael Pradel

Large language models (LLMs) frequently generate hallucinations-content that deviates from factual accuracy or provided context-posing challenges for diagnosis due to the complex interplay of underlying causes. This paper introduces a…

计算与语言 · 计算机科学 2025-04-18 Yiyou Sun , Yu Gai , Lijie Chen , Abhilasha Ravichander , Yejin Choi , Dawn Song

Despite the great advancement of Language modeling in recent days, Large Language Models (LLMs) such as GPT3 are notorious for generating non-factual responses, so-called "hallucination" problems. Existing methods for detecting and…

计算与语言 · 计算机科学 2025-09-29 Seongho Joo , Kyungmin Min , Jahyun Koo , Kyomin Jung

Large language models (LLMs), despite their remarkable text generation capabilities, often hallucinate and generate text that is factually incorrect and not grounded in real-world knowledge. This poses serious risks in domains like…

计算与语言 · 计算机科学 2025-11-18 Raavi Gupta , Pranav Hari Panicker , Sumit Bhatia , Ganesh Ramakrishnan

Hallucinations in large language models (LLMs) pose significant safety concerns that impede their broader deployment. Recent research in hallucination detection has demonstrated that LLMs' internal representations contain truthfulness…

机器学习 · 计算机科学 2025-11-11 Mengjia Niu , Hamed Haddadi , Guansong Pang