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Vision-Language Models (VLMs) frequently "hallucinate" - generate plausible yet factually incorrect statements - posing a critical barrier to their trustworthy deployment. In this work, we propose a new paradigm for diagnosing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Lexiang Xiong , Qi Li , Jingwen Ye , Xinchao Wang

Given the higher information load processed by large vision-language models (LVLMs) compared to single-modal LLMs, detecting LVLM hallucinations requires more human and time expense, and thus rise a wider safety concerns. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Ruiyang Zhang , Hu Zhang , Zhedong Zheng

Recent advancements in large multimodal models (LMMs) have significantly enhanced performance across diverse tasks, with ongoing efforts to further integrate additional modalities such as video and audio. However, most existing LMMs remain…

Computer Vision and Pattern Recognition · Computer Science 2024-10-17 Sicong Leng , Yun Xing , Zesen Cheng , Yang Zhou , Hang Zhang , Xin Li , Deli Zhao , Shijian Lu , Chunyan Miao , Lidong Bing

Vision-Language Models (VLMs) are increasingly deployed in autonomous driving and embodied AI systems, where reliable perception is critical for safe semantic reasoning and decision-making. While recent VLMs demonstrate strong performance…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Guo Cheng

Large Vision-Language Models (LVLMs) have achieved impressive performance in multimodal tasks, but they still suffer from hallucinations, i.e., generating content that is grammatically accurate but inconsistent with visual inputs. In this…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Chenxi Li , Yichen Guo , Benfang Qian , Jinhao You , Kai Tang , Yaosong Du , Zonghao Zhang , Xiande Huang

Multi-modal Large Language Models (MLLMs) tuned on machine-generated instruction-following data have demonstrated remarkable performance in various multi-modal understanding and generation tasks. However, the hallucinations inherent in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Qifan Yu , Juncheng Li , Longhui Wei , Liang Pang , Wentao Ye , Bosheng Qin , Siliang Tang , Qi Tian , Yueting Zhuang

Large vision-language models (LVLMs) have made substantial progress in integrating large language models (LLMs) with visual inputs, enabling advanced multimodal reasoning. Despite their success, a persistent challenge is hallucination-where…

Computation and Language · Computer Science 2025-06-11 Jinghan He , Kuan Zhu , Haiyun Guo , Junfeng Fang , Zhenglin Hua , Yuheng Jia , Ming Tang , Tat-Seng Chua , Jinqiao Wang

Large Vision-Language Models (LVLMs) often suffer from hallucinations, generating descriptions that include visual details absent from the input image. Recent preference alignment methods typically rely on supervision distilled from…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Minghui Chen , Chenxu Yang , Hengjie Zhu , Dayan Wu , Zheng Lin , Qingyi Si

While many capabilities of language models (LMs) improve with increased training budget, the influence of scale on hallucinations is not yet fully understood. Hallucinations come in many forms, and there is no universally accepted…

Large language models are successful in answering factoid questions but are also prone to hallucination. We investigate the phenomenon of LLMs possessing correct answer knowledge yet still hallucinating from the perspective of inference…

Computation and Language · Computer Science 2024-10-29 Che Jiang , Biqing Qi , Xiangyu Hong , Dayuan Fu , Yang Cheng , Fandong Meng , Mo Yu , Bowen Zhou , Jie Zhou

Is automated hallucination detection possible? In this work, we introduce a theoretical framework to analyze the feasibility of automatically detecting hallucinations produced by large language models (LLMs). Inspired by the classical…

Machine Learning · Computer Science 2025-06-03 Amin Karbasi , Omar Montasser , John Sous , Grigoris Velegkas

Multimodal large reasoning models (MLRMs) often suffer from hallucinations that stem not only from insufficient visual grounding but also from imbalanced allocation between perception and reasoning processes. Building upon recent…

Artificial Intelligence · Computer Science 2026-03-10 Haolang Lu , Bolun Chu , WeiYe Fu , Guoshun Nan , Junning Liu , Minghui Pan , Qiankun Li , Yi Yu , Hua Wang , Kun Wang

Large Vision-Language Models (LVLMs) usually generate texts which satisfy context coherence but don't match the visual input. Such a hallucination issue hinders LVLMs' applicability in the real world. The key to solving hallucination in…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Nanxing Hu , Xiaoyue Duan , Jinchao Zhang , Guoliang Kang

Multimodal large language models (MLLMs) have achieved remarkable progress, yet the object hallucination remains a critical challenge for reliable deployment. In this paper, we present an in-depth analysis of instruction token embeddings…

Machine Learning · Computer Science 2026-05-13 Runhe Lai , Xinhua Lu , Yanqi Wu , Jinlun Ye , Weijiang Yu , Ruixuan Wang

The emergence of large language models (LLMs) is a milestone in generative artificial intelligence, achieving significant success in text comprehension and generation tasks. Despite the tremendous success of LLMs in many downstream tasks,…

Computation and Language · Computer Science 2024-07-16 He Li , Haoang Chi , Mingyu Liu , Wenjing Yang

Despite the many advances of Large Language Models (LLMs) and their unprecedented rapid evolution, their impact and integration into every facet of our daily lives is limited due to various reasons. One critical factor hindering their…

Computation and Language · Computer Science 2024-08-20 Yakir Yehuda , Itzik Malkiel , Oren Barkan , Jonathan Weill , Royi Ronen , Noam Koenigstein

We show that object detectors can hallucinate and detect missing objects; potentially even accurately localized at their expected, but non-existing, position. This is particularly problematic for applications that rely on visual part…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Osman Semih Kayhan , Bart Vredebregt , Jan C. van Gemert

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 Visual Language Models (LVLMs) have demonstrated impressive capabilities across multiple tasks. However, their trustworthiness is often challenged by hallucinations, which can be attributed to the modality misalignment and the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Jiulong Wu , Zhengliang Shi , Shuaiqiang Wang , Jizhou Huang , Dawei Yin , Lingyong Yan , Min Cao , Min Zhang

Recent advancements in large vision-language models (LVLM) have significantly enhanced their ability to comprehend visual inputs alongside natural language. However, a major challenge in their real-world application is hallucination, where…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Po-Hsuan Huang , Jeng-Lin Li , Chin-Po Chen , Ming-Ching Chang , Wei-Chao Chen