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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

Recent studies have examined attention dynamics in large vision-language models (LVLMs) to detect hallucinations. However, existing approaches remain limited in reliably distinguishing hallucinated from factually grounded outputs, as they…

计算机视觉与模式识别 · 计算机科学 2026-01-29 Xiaofeng Zhang , Yuanchao Zhu , Chaochen Gu , Xiaosong Yuan , Qiyan Zhao , Jiawei Cao , Feilong Tang , Sinan Fan , Yaomin Shen , Chen Shen , Hao Tang

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) 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

Large Language Models (LLMs) often generate hallucinations, producing outputs that are contextually inaccurate or factually incorrect. We introduce HICD, a novel method designed to induce hallucinations for contrastive decoding to mitigate…

计算与语言 · 计算机科学 2025-05-26 Xinyan Jiang , Hang Ye , Yongxin Zhu , Xiaoying Zheng , Zikang Chen , Jun Gong

Large Vision-Language Models (LVLMs) achieve strong performance on many multimodal tasks, but object hallucinations severely undermine their reliability. Most existing studies focus on the text modality, attributing hallucinations to overly…

计算机视觉与模式识别 · 计算机科学 2026-03-18 Jiale Song , Jiaxin Luo , Xue-song Tang , Kuangrong Hao , Mingbo Zhao

Large vision-language models (LVLMs) achieve strong performance on visual reasoning tasks but remain highly susceptible to hallucination. Existing detection methods predominantly rely on coarse, whole-image measures of how an object token…

Large Vision Language Models (LVLMs) have demonstrated remarkable capabilities in understanding and describing visual content, achieving state-of-the-art performance across various vision-language tasks. However, these models often generate…

计算机视觉与模式识别 · 计算机科学 2025-03-27 Kazi Hasan Ibn Arif , Sajib Acharjee Dip , Khizar Hussain , Lang Zhang , Chris Thomas

Multimodal Large Language Models (MLLMs) achieve strong performance on tasks like image captioning and visual question answering, but remain prone to hallucinations, where generated text conflicts with the visual input. Prior work links…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Tiancheng Yang , Lin Zhang , Jiaye Lin , Guimin Hu , Di Wang , Lijie Hu

Despite their impressive performance across a wide range of tasks, Large Vision-Language Models (LVLMs) remain prone to hallucination. In this study, we propose a comprehensive intervention framework aligned with the transformer's causal…

计算机视觉与模式识别 · 计算机科学 2026-01-07 Jiaye Qian , Ge Zheng , Yuchen Zhu , Sibei Yang

Large language models achieve impressive results but distinguishing factual reasoning from hallucinations remains challenging. We propose a spectral analysis framework that models transformer layers as dynamic graphs induced by attention,…

计算与语言 · 计算机科学 2025-10-23 Valentin Noël

Existing Large Vision-Language Models (LVLMs) primarily align image features of vision encoder with Large Language Models (LLMs) to leverage their superior text generation capabilities. However, the scale disparity between vision encoder…

计算机视觉与模式识别 · 计算机科学 2024-08-01 Shi Liu , Kecheng Zheng , Wei Chen

Hallucinations pose a significant challenge to the reliability and alignment of Large Language Models (LLMs), limiting their widespread acceptance beyond chatbot applications. Despite ongoing efforts, hallucinations remain a prevalent…

计算与语言 · 计算机科学 2024-02-27 Cem Uluoglakci , Tugba Taskaya Temizel

Hallucination has emerged as a significant barrier to the effective application of Large Language Models (LLMs). In this work, we introduce a novel Attention-Guided SElf-Reflection (AGSER) approach for zero-shot hallucination detection in…

计算与语言 · 计算机科学 2025-09-04 Qiang Liu , Xinlong Chen , Yue Ding , Bowen Song , Weiqiang Wang , Shu Wu , Liang Wang

Retrieval-Augmented Generation (RAG) aims to mitigate hallucinations in large language models (LLMs) by grounding responses in retrieved documents. Yet, RAG-based LLMs still hallucinate even when provided with correct and sufficient…

计算与语言 · 计算机科学 2026-02-04 Samuel Yeh , Sharon Li , Tanwi Mallick

Multi-modal large language models (MLLMs) have been shown to efficiently integrate natural language with visual information to handle multi-modal tasks. However, MLLMs still face a fundamental limitation of hallucinations, where they tend…

计算机视觉与模式识别 · 计算机科学 2024-02-27 Chaoya Jiang , Haiyang Xu , Mengfan Dong , Jiaxing Chen , Wei Ye , Ming Yan , Qinghao Ye , Ji Zhang , Fei Huang , Shikun Zhang

The adoption of Large Language Models (LLMs) is rapidly expanding across various tasks that involve inherent graphical structures. Graphs are integral to a wide range of applications, including motion planning for autonomous vehicles,…

人工智能 · 计算机科学 2025-03-17 Piyush Gupta , Sangjae Bae , David Isele

Large Vision-Language Models (LVLMs) exhibit impressive multimodal reasoning capabilities but remain highly susceptible to object hallucination, where models generate responses that are not factually aligned with the visual content. Recent…

计算机视觉与模式识别 · 计算机科学 2026-03-25 Younan Zhu , Linwei Tao , Minjing Dong , Chang Xu

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

Large Language Models (LLMs) demonstrate significant capabilities in processing natural language data, promising efficient knowledge extraction from diverse textual sources to enhance situational awareness and support decision-making.…

计算与语言 · 计算机科学 2024-06-04 Fatemeh Shiri , Van Nguyen , Farhad Moghimifar , John Yoo , Gholamreza Haffari , Yuan-Fang Li