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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

We introduce the System Hallucination Scale (SHS), a lightweight and human-centered measurement instrument for assessing hallucination-related behavior in large language models (LLMs). Inspired by established psychometric tools such as the…

Computation and Language · Computer Science 2026-03-12 Heimo Müller , Dominik Steiger , Markus Plass , Andreas Holzinger

Hallucinations in large language models remain a persistent challenge, particularly in multilingual and generative settings where factual consistency is difficult to maintain. While recent models show strong performance on English-centric…

Computation and Language · Computer Science 2026-02-09 Samir Abdaljalil , Parichit Sharma , Erchin Serpedin , Hasan Kurban

Multimodal large language models (MLLMs) have achieved strong performance on vision-language tasks but still struggle with fine-grained visual differences, leading to hallucinations or missed semantic shifts. We attribute this to…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Tianyi Bai , Yuxuan Fan , Jiantao Qiu , Fupeng Sun , Jiayi Song , Junlin Han , Zichen Liu , Conghui He , Wentao Zhang , Binhang Yuan

Detecting hallucinations in large language models (LLMs) is critical for enhancing their reliability and trustworthiness. Most research focuses on hallucinations as deviations from information seen during training. However, the opaque…

Computation and Language · Computer Science 2025-03-26 Fabian Ridder , Malte Schilling

Hallucinations in Large Language Models (LLMs), defined as the generation of content inconsistent with facts or context, represent a core obstacle to their reliable deployment in critical domains. Current research primarily focuses on…

Computation and Language · Computer Science 2026-03-20 Yanyi Liu , Qingwen Yang , Tiezheng Guo , Feiyu Qu , Jun Liu , Yingyou Wen

Large Language Models (LLMs) have significantly advanced communications fields, such as Telecom Q\&A, mathematical modeling, and coding. However, LLMs encounter an inherent issue known as hallucination, i.e., generating fact-conflicting or…

Networking and Internet Architecture · Computer Science 2024-12-10 Yinqiu Liu , Guangyuan Liu , Ruichen Zhang , Dusit Niyato , Zehui Xiong , Dong In Kim , Kaibin Huang , Hongyang Du

While multimodal large language models (MLLMs) have achieved rapid progress in vision-language understanding, they remain prone to multimodal hallucinations, producing responses that are inconsistent with the visual input. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Shizhe Zhou , Bohan Jia , Kai Wu , Yan Shen , Tongyun Li , Yuyang Wu , Shaohui Lin

Large Language Models (LLMs) have advanced machine translation but remain vulnerable to hallucinations. Unfortunately, existing MT benchmarks are not capable of exposing failures in multilingual LLMs. To disclose hallucination in…

Computation and Language · Computer Science 2025-10-29 Xinwei Wu , Heng Liu , Jiang Zhou , Xiaohu Zhao , Linlong Xu , Longyue Wang , Weihua Luo , Kaifu Zhang

Medical Large Multi-modal Models (LMMs) have demonstrated remarkable capabilities in medical data interpretation. However, these models frequently generate hallucinations contradicting source evidence, particularly due to inadequate…

Multimodal large language models (MLLMs) enable interaction over both text and images, but their safety behavior can be driven by unimodal shortcuts instead of true joint intent understanding. We introduce CSR-Bench, a benchmark for…

Artificial Intelligence · Computer Science 2026-02-04 Yuxuan Liu , Yuntian Shi , Kun Wang , Haoting Shen , Kun Yang

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

Multimodal Large Language Models (MLLMs) deliver detailed responses on vision-language tasks, yet remain susceptible to object hallucination (introducing objects not present in the image), undermining reliability in practice. Prior efforts…

Machine Learning · Computer Science 2026-02-26 Shiwei Tan , Hengyi Wang , Weiyi Qin , Qi Xu , Zhigang Hua , Hao Wang

Multimodal large language models (MLLMs) excel at generating highly detailed captions but often produce hallucinations. Our analysis reveals that existing hallucination detection methods struggle with detailed captions. We attribute this to…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Saehyung Lee , Seunghyun Yoon , Trung Bui , Jing Shi , Sungroh Yoon

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

The reliability of Large Language Models (LLMs) in high-stakes domains such as healthcare, law, and scientific discovery is often compromised by hallucinations. These failures typically stem from two sources: data-driven hallucinations and…

Machine Learning · Computer Science 2026-03-03 Xinyue Zeng , Junhong Lin , Yujun Yan , Feng Guo , Liang Shi , Jun Wu , Dawei Zhou

The issue of hallucinations is a prevalent concern in existing Large Vision-Language Models (LVLMs). Previous efforts have primarily focused on investigating object hallucinations, which can be easily alleviated by introducing object…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Mingrui Wu , Jiayi Ji , Oucheng Huang , Jiale Li , Yuhang Wu , Xiaoshuai Sun , Rongrong Ji

In the era of large language models (LLMs), hallucination (i.e., the tendency to generate factually incorrect content) poses great challenge to trustworthy and reliable deployment of LLMs in real-world applications. To tackle the LLM…

Computation and Language · Computer Science 2024-01-09 Junyi Li , Jie Chen , Ruiyang Ren , Xiaoxue Cheng , Wayne Xin Zhao , Jian-Yun Nie , Ji-Rong Wen

Emotion understanding is a critical yet challenging task. Recent advances in Multimodal Large Language Models (MLLMs) have significantly enhanced their capabilities in this area. However, MLLMs often suffer from hallucinations, generating…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 Bohao Xing , Xin Liu , Guoying Zhao , Chengyu Liu , Xiaolan Fu , Heikki Kälviäinen

Multi-modal large language models (MLLMs) have achieved remarkable success in image- and region-level remote sensing (RS) image understanding tasks, such as image captioning, visual question answering, and visual grounding. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Ruizhe Ou , Yuan Hu , Fan Zhang , Jiaxin Chen , Yu Liu