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Large language models (LLMs) exhibit hallucinations in long-form question-answering tasks across various domains and wide applications. Current hallucination detection and mitigation datasets are limited in domains and sizes, which struggle…

计算与语言 · 计算机科学 2024-12-20 Yuzhe Gu , Ziwei Ji , Wenwei Zhang , Chengqi Lyu , Dahua Lin , Kai Chen

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

Large Vision-Language Models (LVLMs) have demonstrated remarkable advancements in numerous areas such as multimedia. However, hallucination issues significantly limit their credibility and application potential. Existing mitigation methods…

机器学习 · 计算机科学 2025-08-20 Wenhao Li , Xiu Su , Jingyi Wu , Feng Yang , Yang Liu , Yi Chen , Shan You , Chang Xu

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

Machine Translation (MT) is undergoing a paradigm shift, with systems based on fine-tuned large language models (LLM) becoming increasingly competitive with traditional encoder-decoder models trained specifically for translation tasks.…

计算与语言 · 计算机科学 2025-01-30 Zilu Tang , Rajen Chatterjee , Sarthak Garg

Large Vision-Language Models (LVLMs) bridge the gap between visual and linguistic modalities, demonstrating strong potential across a variety of domains. However, despite significant progress, LVLMs still suffer from severe hallucination…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Ruiqi Ma , Yu Yan , Chunhong Zhang , Minghao Yin , XinChao Liu , Zhihong Jin , Zheng Hu

Large language models (LLMs) demonstrate strong capabilities in natural language processing but remain prone to hallucinations, generating factually incorrect or fabricated content. This issue undermines their reliability, particularly in…

计算与语言 · 计算机科学 2025-02-19 Cheng Peng Huang , Hao-Yuan Chen

The internet is rife with unattributed, deliberately misleading, or otherwise untrustworthy content. Though large language models (LLMs) are often tasked with autonomous web browsing, the extent to which they have learned the simple…

计算与语言 · 计算机科学 2025-08-08 Gustaf Ahdritz , Anat Kleiman

Large Language Models (LLMs) are increasingly deployed in high-risk domains. However, state-of-the-art LLMs often exhibit hallucinations, raising serious concerns about their reliability. Prior work has explored adversarial attacks to…

计算与语言 · 计算机科学 2026-02-17 Buyun Liang , Liangzu Peng , Jinqi Luo , Darshan Thaker , Kwan Ho Ryan Chan , René Vidal

Hallucinations in Large Language Models (LLMs), i.e., the tendency to generate plausible but non-factual content, pose a significant challenge for their reliable deployment in high-stakes environments. However, existing hallucination…

计算与语言 · 计算机科学 2026-01-29 Yitong Qiao , Licheng Pan , Yu Mi , Lei Liu , Yue Shen , Fei Sun , Zhixuan Chu

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

Large Language Models (LLMs) are prone to hallucination with non-factual or unfaithful statements, which undermines the applications in real-world scenarios. Recent researches focus on uncertainty-based hallucination detection, which…

计算与语言 · 计算机科学 2025-04-08 Kedi Chen , Qin Chen , Jie Zhou , Xinqi Tao , Bowen Ding , Jingwen Xie , Mingchen Xie , Peilong Li , Feng Zheng , Liang He

How do large language models (LLMs) develop and evolve over the course of training? How do these patterns change as models scale? To answer these questions, we introduce \textit{Pythia}, a suite of 16 LLMs all trained on public data seen in…

Large language models (LLMs) have achieved remarkable progress in natural language generation, yet they continue to display puzzling behaviors -- such as repetition and incoherence -- even when exhibiting low perplexity. This highlights a…

计算与语言 · 计算机科学 2025-10-27 Xin Du , Kumiko Tanaka-Ishii

Large language models (LLMs) are susceptible to hallucinations -- factually incorrect outputs -- leading to a large body of work on detecting and mitigating such cases. We argue that it is important to distinguish between two types of…

计算与语言 · 计算机科学 2025-02-19 Adi Simhi , Jonathan Herzig , Idan Szpektor , Yonatan Belinkov

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 language models (LLMs) hallucinate with confidence: their outputs can be fluent, authoritative, and simply wrong. In medical, legal, and scientific applications this failure causes direct harm, and detecting it from internal model…

计算与语言 · 计算机科学 2026-05-19 Khizar Hussain , Murat Kantarcioglu

Hallucinations in large language models (LLMs) are commonly regarded as errors to be minimized. However, recent perspectives suggest that some hallucinations may encode creative or epistemically valuable content, a dimension that remains…

计算与语言 · 计算机科学 2026-01-01 Chengxu Yang , Jingling Yuan , Siqi Cai , Jiawei Jiang , Chuang Hu

The reliability of Large Language Models (LLMs) in high-stakes domains such as healthcare, law, and scientific discovery is often compromised by hallucinations. These failures typically stem from two sources: data-driven hallucinations and…

机器学习 · 计算机科学 2026-03-03 Xinyue Zeng , Junhong Lin , Yujun Yan , Feng Guo , Liang Shi , Jun Wu , Dawei Zhou

Large vision-language models (LVLMs) suffer from hallucination a lot, generating responses that apparently contradict to the image content occasionally. The key problem lies in its weak ability to comprehend detailed content in a…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Zhiyang Chen , Yousong Zhu , Yufei Zhan , Zhaowen Li , Chaoyang Zhao , Jinqiao Wang , Ming Tang