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Large Language Models (LLMs) are prone to generating plausible yet incorrect responses, known as hallucinations. Effectively detecting hallucinations is therefore crucial for the safe deployment of LLMs. Recent research has linked…

计算与语言 · 计算机科学 2026-03-03 Litian Liu , Reza Pourreza , Sunny Panchal , Apratim Bhattacharyya , Yubing Jian , Yao Qin , Roland Memisevic

Large language models (LLMs) can suffer from hallucinations when generating text. These hallucinations impede various applications in society and industry by making LLMs untrustworthy. Current LLMs generate text in an autoregressive fashion…

机器学习 · 计算机科学 2025-11-05 Lukas Aichberger , Kajetan Schweighofer , Mykyta Ielanskyi , Sepp Hochreiter

Hallucinations pose a significant obstacle to the reliability and widespread adoption of language models, yet their accurate measurement remains a persistent challenge. While many task- and domain-specific metrics have been proposed to…

Large Language Models often generate factually incorrect but plausible outputs, known as hallucinations. We identify a more insidious phenomenon, LLM delusion, defined as high belief hallucinations, incorrect outputs with abnormally high…

计算与语言 · 计算机科学 2025-03-11 Hongshen Xu , Zixv yang , Zichen Zhu , Kunyao Lan , Zihan Wang , Mengyue Wu , Ziwei Ji , Lu Chen , Pascale Fung , Kai Yu

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

Large Language Models (LLMs) have become powerful, but hallucinations remain a vital obstacle to their trustworthy use. Previous works improved the capability of hallucination detection by measuring uncertainty. But they can not explain the…

计算与语言 · 计算机科学 2026-02-03 Yiming Huang , Junyan Zhang , Zihao Wang , Biquan Bie , Yunzhong Qiu , Xuming Hu , Yi R. Fung , Xinlei He

Hallucination in Large Language Models (LLMs) refers to the generation of content that is not faithful to the input or the real-world facts. This paper provides a rigorous treatment of hallucination in LLMs, including formal definitions and…

计算与语言 · 计算机科学 2025-08-01 Esmail Gumaan

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

Large language models (LLMs) often generate responses that deviate from user input or training data, a phenomenon known as "hallucination." These hallucinations undermine user trust and hinder the adoption of generative AI systems.…

计算与语言 · 计算机科学 2025-04-25 Yejin Bang , Ziwei Ji , Alan Schelten , Anthony Hartshorn , Tara Fowler , Cheng Zhang , Nicola Cancedda , Pascale Fung

Large language models (LLMs) have shown promise for generative and knowledge-intensive tasks including question-answering (QA) tasks. However, the practical deployment still faces challenges, notably the issue of "hallucination", where…

计算与语言 · 计算机科学 2023-10-11 Ziwei Ji , Tiezheng Yu , Yan Xu , Nayeon Lee , Etsuko Ishii , Pascale Fung

Large language models (LLMs) often generate inaccurate yet credible-sounding content, known as hallucinations. This inherent feature of LLMs poses significant risks, especially in critical domains. I analyze LLMs as a new class of…

综合经济学 · 经济学 2025-03-10 Tingmingke Lu

Large Language Models (LLMs) are increasingly applied to medical imaging tasks, including image interpretation and synthetic image generation. However, these models often produce hallucinations, which are confident but incorrect outputs…

图像与视频处理 · 电气工程与系统科学 2025-08-12 Anindya Bijoy Das , Shahnewaz Karim Sakib , Shibbir Ahmed

Prior work on large language model (LLM) hallucinations has associated them with model uncertainty or inaccurate knowledge. In this work, we define and investigate a distinct type of hallucination, where a model can consistently answer a…

计算与语言 · 计算机科学 2025-08-26 Adi Simhi , Itay Itzhak , Fazl Barez , Gabriel Stanovsky , Yonatan Belinkov

Although demonstrating superb performance on various NLP tasks, large language models (LLMs) still suffer from the hallucination problem, which threatens the reliability of LLMs. To measure the level of hallucination of LLMs, previous works…

人工智能 · 计算机科学 2023-09-12 Li Du , Yequan Wang , Xingrun Xing , Yiqun Ya , Xiang Li , Xin Jiang , Xuezhi Fang

Large Language Models (LLMs) suffer from hallucination problems, which hinder their reliability in sensitive applications. In the black-box setting, several self-consistency-based techniques have been proposed for hallucination detection.…

计算与语言 · 计算机科学 2025-02-25 Yihao Xue , Kristjan Greenewald , Youssef Mroueh , Baharan Mirzasoleiman

Large Language Models (LLMs) have gained significant popularity for their impressive performance across diverse fields. However, LLMs are prone to hallucinate untruthful or nonsensical outputs that fail to meet user expectations in many…

计算与语言 · 计算机科学 2023-11-23 Tianhang Zhang , Lin Qiu , Qipeng Guo , Cheng Deng , Yue Zhang , Zheng Zhang , Chenghu Zhou , Xinbing Wang , Luoyi Fu

Large Language Models (LLMs) exhibit remarkable capabilities in natural language understanding and reasoning, but suffer from hallucination: the generation of factually incorrect content. While numerous methods have been developed to reduce…

The Large Visual Language Models (LVLMs) enhances user interaction and enriches user experience by integrating visual modality on the basis of the Large Language Models (LLMs). It has demonstrated their powerful information processing and…

人工智能 · 计算机科学 2024-10-22 Wei Lan , Wenyi Chen , Qingfeng Chen , Shirui Pan , Huiyu Zhou , Yi Pan

Large language models (LLMs) frequently hallucinate and produce factual errors, yet our understanding of why they make these errors remains limited. In this study, we delve into the underlying mechanisms of LLM hallucinations from the…

计算与语言 · 计算机科学 2024-03-13 Shiqi Chen , Miao Xiong , Junteng Liu , Zhengxuan Wu , Teng Xiao , Siyang Gao , Junxian He

Large Language Models (LLMs) have transformed the Natural Language Processing (NLP) landscape with their remarkable ability to understand and generate human-like text. However, these models are prone to ``hallucinations'' -- outputs that do…