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As large language models (LLMs) evolve from conversational assistants into agents capable of handling complex tasks, they are increasingly deployed in high-risk domains. However, existing benchmarks largely rely on mixed queries and…

Computation and Language · Computer Science 2026-04-28 Yuhe Wu , Guangyu Wang , Yuran Chen , Jiatong Zhang , Yutong Zhang , Yujie Chen , Jiaming Shang , Guang Zhang , Zhuang Liu

Video multimodal large language models (Video-MLLMs) have achieved remarkable progress in video understanding. However, they remain vulnerable to hallucination-producing content inconsistent with or unrelated to video inputs. Previous video…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Hao Lu , Jiahao Wang , Yaolun Zhang , Ruohui Wang , Xuanyu Zheng , Yepeng Tang , Dahua Lin , Lewei Lu

Vision Language Models (VLMs) exhibit persistent hallucinations in counting tasks, with accuracy substantially lower than other visual reasoning tasks (excluding sentiment). This phenomenon persists even in state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Boyuan Chen , Minghao Shao , Siddharth Garg , Ramesh Karri , Muhammad Shafique

Segmentation based on language has been a popular topic in computer vision. While recent advances in multimodal large language models (MLLMs) have endowed segmentation systems with reasoning capabilities, these efforts remain confined by…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Tianming Liang , Qirui Du , Jian-Fang Hu , Haichao Jiang , Zicheng Lin , Wei-Shi Zheng

Deep learning-based methods have recently achieved significant success in image reconstruction problems. However, challenges have emerged, as these methods may generate unrealistic artifacts or hallucinations, which can interfere with…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Jianfei Li , Ines Rosellon-Inclan , Gitta Kutyniok , Jean-Luc Starck

Hallucinations in Large Language Models (LLMs) represent a critical barrier to their reliable deployment, a vulnerability heavily exacerbated in non-English and resource-constrained contexts. Existing detection approaches that rely on…

Computation and Language · Computer Science 2026-05-26 Riasad Alvi , Nurul Labib Sayeedi , Md. Faiyaz Abdullah Sayeedi

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 Language Models (LLMs) have gained widespread adoption in various natural language processing tasks, including question answering and dialogue systems. However, a major drawback of LLMs is the issue of hallucination, where they…

Computation and Language · Computer Science 2024-07-08 Yuyan Chen , Qiang Fu , Yichen Yuan , Zhihao Wen , Ge Fan , Dayiheng Liu , Dongmei Zhang , Zhixu Li , Yanghua Xiao

While Multimodal Large Language Models (MLLMs) have achieved remarkable success across diverse tasks, their practical deployment is severely hindered by hallucination issues, which become particularly acute during Reinforcement Learning…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Miao Pan , Wangjie Gan , Jintao Chen , Wenqi Zhang , Bing Sun , Jianwei Yin , Xuhong Zhang

Large language models (LLMs) offer transformative potential for clinical decision support in spine surgery but pose significant risks through hallucinations, which are factually inconsistent or contextually misaligned outputs that may…

Machine Learning · Computer Science 2025-11-21 Dong Chen , Yanzhe Wei , Zonglin He , Guan-Ming Kuang , Canhua Ye , Meiru An , Huili Peng , Yong Hu , Huiren Tao , Kenneth MC Cheung

Reasoning segmentation seeks pixel-accurate masks for targets referenced by complex, often implicit instructions, requiring context-dependent reasoning over the scene. Recent multimodal language models have advanced instruction following…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Prantik Howlader , Hoang Nguyen-Canh , Srijan Das , Jingyi Xu , Hieu Le , Dimitris Samaras

Vision-language models (VLMs) have recently shown remarkable capabilities in visual understanding and generation, but remain vulnerable to adversarial manipulations of visual content. Prior object-hiding attacks primarily rely on…

Cryptography and Security · Computer Science 2026-03-18 Amira Guesmi , Muhammad Shafique

Large Language Models (LLMs) are increasingly used in various contexts, yet remain prone to generating non-factual content, commonly referred to as "hallucinations". The literature categorizes hallucinations into several types, including…

Computation and Language · Computer Science 2025-03-12 Samir Abdaljalil , Hasan Kurban , Erchin Serpedin

The rapidly developing Large Vision Language Models (LVLMs) have shown notable capabilities on a range of multi-modal tasks, but still face the hallucination phenomena where the generated texts do not align with the given contexts,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Wenyi Xiao , Ziwei Huang , Leilei Gan , Wanggui He , Haoyuan Li , Zhelun Yu , Fangxun Shu , Hao Jiang , Linchao Zhu

Recently, Multimodal Large Language Models (MLLMs) have made significant progress in the video comprehension field. Despite remarkable content reasoning and instruction following capabilities they demonstrated, the hallucination problem of…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Jiacheng Zhang , Yang Jiao , Shaoxiang Chen , Na Zhao , Zhiyu Tan , Hao Li , Xingjun Ma , Jingjing Chen

Large Vision-Language Models (LVLMs) suffer from hallucination issues, wherein the models generate plausible-sounding but factually incorrect outputs, undermining their reliability. A comprehensive quantitative evaluation is necessary to…

Computation and Language · Computer Science 2024-10-07 Haoyi Qiu , Wenbo Hu , Zi-Yi Dou , Nanyun Peng

Recent advancements in Multimodal Large Language Models (MLLMs) have extended their capabilities to video understanding. Yet, these models are often plagued by "hallucinations", where irrelevant or nonsensical content is generated,…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Yuxuan Wang , Yueqian Wang , Dongyan Zhao , Cihang Xie , Zilong Zheng

Hallucinations in large language models (LLMs) pose significant challenges in tasks requiring complex multi-step reasoning, such as mathematical problem-solving. Existing approaches primarily detect the presence of hallucinations but lack a…

Computation and Language · Computer Science 2025-09-19 Ruosen Li , Ziming Luo , Xinya Du

Large vision-language models (LVLMs) have demonstrated remarkable capabilities in multimodal understanding and generation tasks. However, these models occasionally generate hallucinatory texts, resulting in descriptions that seem reasonable…

Computer Vision and Pattern Recognition · Computer Science 2024-12-11 Jiaqi Fan , Jianhua Wu , Hongqing Chu , Quanbo Ge , Bingzhao Gao

Despite the remarkable multimodal capabilities of Large Vision-Language Models (LVLMs), discrepancies often occur between visual inputs and textual outputs--a phenomenon we term visual hallucination. This critical reliability gap poses…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Tao Huang , Zhekun Liu , Rui Wang , Yang Zhang , Liping Jing