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When asked to summarize articles or answer questions given a passage, large language models (LLMs) can hallucinate details and respond with unsubstantiated answers that are inaccurate with respect to the input context. This paper describes…

Computation and Language · Computer Science 2024-10-04 Yung-Sung Chuang , Linlu Qiu , Cheng-Yu Hsieh , Ranjay Krishna , Yoon Kim , James Glass

Multimodal Large Language Models (MLLMs) have achieved impressive advances, yet object hallucination remains a persistent challenge. Existing methods, based on the flawed assumption that omission and fabrication hallucinations share a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Guangzong Si , Hao Yin , Xianfei Li , Qing Ding , Wenlong Liao , Tao He , Pai Peng

Multimodal Large Language Models (MLLMs) have shown remarkable capability in assisting disease diagnosis in medical visual question answering (VQA). However, their outputs remain vulnerable to hallucinations (i.e., responses that contradict…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Mengyuan Jin , Zehui Liao , Yong Xia

Large Vision-Language Models (LVLMs) increasingly rely on retrieval to answer knowledge-intensive multimodal questions. Existing benchmarks overlook conflicts between visual and textual evidence and the importance of generating deflections…

Computation and Language · Computer Science 2026-04-15 Nicholas Moratelli , Christopher Davis , Leonardo F. R. Ribeiro , Bill Byrne , Gonzalo Iglesias

Large Vision-Language Models (VLMs) often answer classic visual illusions "correctly" on original images, yet persist with the same responses when illusion factors are inverted, even though the visual change is obvious to humans. This…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Xiaoxiao Sun , Mingyang Li , Kun Yuan , Min Woo Sun , Mark Endo , Shengguang Wu , Changlin Li , Yuhui Zhang , Zeyu Wang , Serena Yeung-Levy

In recent years, multimodal large language models (MLLMs) have shown remarkable capabilities in tasks like visual question answering and common sense reasoning, while visual perception models have made significant strides in perception…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Guanqun Wang , Xinyu Wei , Jiaming Liu , Ray Zhang , Yichi Zhang , Kevin Zhang , Maurice Chong , Shanghang Zhang

Multi-Modal Large Language Models (MLLMs) stand out in various tasks but still struggle with hallucinations. While recent training-free mitigation methods mostly introduce additional inference overhead via retrospection strategy and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Chongjun Tu , Peng Ye , Dongzhan Zhou , Lei Bai , Gang Yu , Tao Chen , Wanli Ouyang

Multimodal large language models (MLLMs) have revolutionized the landscape of AI, demonstrating impressive capabilities in tackling complex vision and audio-language tasks. However, a critical challenge remains: these models often suffer…

Machine Learning · Computer Science 2026-05-05 Itai Allouche , Joseph Keshet

Multimodal Diffusion Large Language Models (MDLLMs) achieve high-concurrency generation through parallel masked decoding, yet the architectures remain prone to multimodal hallucinations. This structural vulnerability stems from an…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Vishal Narnaware , Animesh Gupta , Kevin Zhai , Zhenyi Wang , Mubarak Shah

Large Language Models (LLMs) are powerful linguistic engines but remain susceptible to hallucinations: plausible-sounding outputs that are factually incorrect or unsupported. In this work, we present a mathematically grounded framework to…

Computation and Language · Computer Science 2025-11-20 Moses Kiprono

Although Visual-Language Models (VLMs) have shown impressive capabilities in tasks like visual question answering and image captioning, they still struggle with hallucinations. Analysis of attention distribution in these models shows that…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Xiaoyu Liang , Jiayuan Yu , Lianrui Mu , Jiedong Zhuang , Jiaqi Hu , Yuchen Yang , Jiangnan Ye , Lu Lu , Jian Chen , Haoji Hu

Large Vision-Language Models (LVLMs) have demonstrated remarkable capabilities in visual understanding and multimodal reasoning. However, LVLMs frequently exhibit hallucination phenomena, manifesting as the generated textual responses that…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Ziyun Dai , Xiaoqiang Li , Shaohua Zhang , Yuanchen Wu , Jide Li

Large Vision-Language Models (LVLMs) have demonstrated remarkable performance in complex multimodal tasks. However, these models still suffer from hallucinations, particularly when required to implicitly recognize or infer diverse visual…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Ashish Seth , Dinesh Manocha , Chirag Agarwal

Multimodal Large Language Models (MLLMs) have shown impressive perception and reasoning capabilities, yet they often suffer from hallucinations -- generating outputs that are linguistically coherent but inconsistent with the context of the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Bingkui Tong , Jiaer Xia , Kaiyang Zhou

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…

Computation and Language · Computer Science 2025-02-19 Adi Simhi , Jonathan Herzig , Idan Szpektor , Yonatan Belinkov

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

Large Vision-Language Models (LVLMs) have shown impressive performance in various tasks. However, LVLMs suffer from hallucination, which hinders their adoption in the real world. Existing studies emphasized that the strong language priors…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Zongyu Wu , Yuwei Niu , Hongcheng Gao , Minhua Lin , Zhiwei Zhang , Zhifang Zhang , Qi Shi , Yilong Wang , Sike Fu , Junjie Xu , Junjie Ao , Enyan Dai , Lei Feng , Xiang Zhang , Suhang Wang

Large vision-language models (LVLMs) have made significant progress in recent years. While LVLMs exhibit excellent ability in language understanding, question answering, and conversations of visual inputs, they are prone to producing…

Computation and Language · Computer Science 2024-11-20 Qing Li , Jiahui Geng , Chenyang Lyu , Derui Zhu , Maxim Panov , Fakhri Karray

Multimodal large language models (MLLMs) often suffer from perceptual impairments under extended reasoning modes, particularly in visual question answering (VQA) tasks. We identify attention dispersion as the underlying cause: during…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Ruiying Peng , Xueyu Wu , Jing Lei , Lu Hou , Yuanzheng Ma , Xiaohui Li

Large vision-language models (LVLMs) exhibit impressive ability to jointly reason over visual and textual inputs. However, they often produce outputs that are linguistically fluent but factually inconsistent with the visual evidence, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Zihu Wang , Boxun Xu , Yuxuan Xia , Peng Li