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Multimodal Large Language Models often suffer from object hallucination. While existing research utilizes attention enhancement and visual retracing, we find these works lack sufficient interpretability regarding attention drift in final…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Chengxu Yang , Jingling Yuan , Chuang Hu , Jiawei Jiang

Leveraging large-scale Text-to-Image (TTI) models have become a common technique for generating exemplar or training dataset in the fields of image synthesis, video editing, 3D reconstruction. However, semantic structural visual…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Bumsoo Kim , Wonseop Shin , Kyuchul Lee , Yonghoon Jung , Sanghyun Seo

Large language models (LLMs) can generate fluent natural language texts when given relevant documents as background context. This ability has attracted considerable interest in developing industry applications of LLMs. However, LLMs are…

Computation and Language · Computer Science 2023-10-11 Deren Lei , Yaxi Li , Mengya Hu , Mingyu Wang , Vincent Yun , Emily Ching , Eslam Kamal

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…

Computation and Language · Computer Science 2023-11-23 Tianhang Zhang , Lin Qiu , Qipeng Guo , Cheng Deng , Yue Zhang , Zheng Zhang , Chenghu Zhou , Xinbing Wang , Luoyi Fu

Detecting hallucinations in large language models is a critical open problem with significant implications for safety and reliability. While existing hallucination detection methods achieve strong performance in question-answering tasks,…

Artificial Intelligence · Computer Science 2026-02-10 Litian Liu , Reza Pourreza , Yubing Jian , Yao Qin , Roland Memisevic

Large language models (LLMs) hallucinate: they produce fluent outputs that are factually incorrect. We present a geometric dynamical systems framework in which hallucinations arise from task-dependent basin structure in latent space. Using…

Computation and Language · Computer Science 2026-04-07 Kalyan Cherukuri , Lav R. Varshney

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 language models (LLMs) achieve remarkable fluency across linguistic and reasoning tasks but remain systematically prone to hallucination. Prevailing accounts attribute hallucinations to data gaps, limited context, or optimization…

Computers and Society · Computer Science 2025-09-23 Richard Ackermann , Simeon Emanuilov

Recent Large Vision Language Models (LVLMs) present remarkable zero-shot conversational and reasoning capabilities given multimodal queries. Nevertheless, they suffer from object hallucination, a phenomenon where LVLMs are prone to generate…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Yun Xing , Yiheng Li , Ivan Laptev , Shijian Lu

Large Language Models (LLMs) have transformed natural language processing (NLP) tasks, but they suffer from hallucination, generating plausible yet factually incorrect content. This issue extends to Video-Language Models (VideoLLMs), where…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Ahmad Khalil , Mahmoud Khalil , Alioune Ngom

While large vision-language models (LVLMs) have demonstrated impressive capabilities in interpreting multi-modal contexts, they invariably suffer from object hallucinations (OH). We introduce HALC, a novel decoding algorithm designed to…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Zhaorun Chen , Zhuokai Zhao , Hongyin Luo , Huaxiu Yao , Bo Li , Jiawei Zhou

Vision language models (VLM) demonstrate sophisticated multimodal reasoning yet are prone to hallucination when confronted with knowledge conflicts, impeding their deployment in information-sensitive contexts. While existing research…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Peter Carragher , Nikitha Rao , Abhinand Jha , R Raghav , Kathleen M. Carley

Object hallucination critically undermines the reliability of Multimodal Large Language Models, often stemming from a fundamental failure in cognitive introspection, where models blindly trust linguistic priors over specific visual…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Shuliang Liu , Songbo Yang , Dong Fang , Sihang Jia , Yuqi Tang , Lingfeng Su , Ruoshui Peng , Yibo Yan , Xin Zou , Xuming Hu

Vision-language models (VLMs) excel in semantic tasks but falter at a core human capability: detecting hidden content in optical illusions or AI-generated images through perceptual adjustments like zooming. We introduce HC-Bench, a…

Computation and Language · Computer Science 2025-10-16 Sifan Li , Yujun Cai , Yiwei Wang

Large Vision Language Models (LVLMs) have achieved significant progress in integrating visual and textual inputs for multimodal reasoning. However, a recurring challenge is ensuring these models utilize visual information as effectively as…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Estelle Aflalo , Gabriela Ben Melech Stan , Tiep Le , Man Luo , Shachar Rosenman , Sayak Paul , Shao-Yen Tseng , Vasudev Lal

Hallucination is a long-standing problem that has been actively investigated in Vision-Language Models (VLMs). Existing research commonly attributes hallucinations to technical limitations or sycophancy bias, where the latter means the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Xiangrui Liu , Man Luo , Agneet Chatterjee , Hua Wei , Chitta Baral , Yezhou Yang

Multimodal large language models (MLLMs) have achieved remarkable success across diverse vision-language tasks, yet they remain highly susceptible to hallucinations, producing content that is fluent but inconsistent with visual evidence.…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Youxu Shi , Suorong Yang , Dong Liu

Although Multimodal Large Language Models (MLLMs) have advanced substantially, they remain vulnerable to object hallucination caused by language priors and visual information loss. To address this, we propose SAVE (Sparse Autoencoder-Driven…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Sangha Park , Seungryong Yoo , Jisoo Mok , Sungroh Yoon

Object hallucination remains a critical challenge in Large Vision-Language Models (LVLMs), where models generate content inconsistent with visual inputs. Existing language-decoder based mitigation approaches often regulate visual or textual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Liu Yu , Zhonghao Chen , Ping Kuang , Zhikun Feng , Fan Zhou , Lan Wang , Gillian Dobbie

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…

Computation and Language · Computer Science 2026-05-19 Khizar Hussain , Murat Kantarcioglu