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Radiology report generation (RRG) has shown great potential in assisting radiologists by automating the labor-intensive task of report writing. While recent advancements have improved the quality and coherence of generated reports, ensuring…

Artificial Intelligence · Computer Science 2025-03-18 Chenyu Wang , Weichao Zhou , Shantanu Ghosh , Kayhan Batmanghelich , Wenchao Li

Recent advancements in Large Vision-Language Models (LVLMs) have significantly expanded their utility in tasks like image captioning and visual question answering. However, they still struggle with object hallucination, where models…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Yeongjae Cho , Keonwoo Kim , Taebaek Hwang , Sungzoon Cho

Recent progress in multimodal large language models (MLLMs) has demonstrated promising performance on medical benchmarks and in preliminary trials as clinical assistants. Yet, our pilot audit of diagnostic cases uncovers a critical failure…

Artificial Intelligence · Computer Science 2025-09-30 Hongjun Liu , Yinghao Zhu , Yuhui Wang , Yitao Long , Zeyu Lai , Lequan Yu , Chen Zhao

Representation learning offers a conduit to elucidate distinctive features within the latent space and interpret the deep models. However, the randomness of lesion distribution and the complexity of low-quality factors in medical images…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Qingshan Hou , Shuai Cheng , Peng Cao , Jinzhu Yang , Xiaoli Liu , Osmar R. Zaiane , Yih Chung Tham

The increasing use of vision-language models (VLMs) in healthcare applications presents great challenges related to hallucinations, in which the models may generate seemingly plausible results that are in fact incorrect. Such hallucinations…

Artificial Intelligence · Computer Science 2025-03-03 Qiao Yan , Yuchen Yuan , Xiaowei Hu , Yihan Wang , Jiaqi Xu , Jinpeng Li , Chi-Wing Fu , Pheng-Ann Heng

Hallucination remains a critical barrier for deploying large language models (LLMs) in reliability-sensitive applications. Existing detection methods largely fall into two categories: factuality checking, which is fundamentally constrained…

Computation and Language · Computer Science 2025-09-17 Jinxin Li , Gang Tu , ShengYu Cheng , Junjie Hu , Jinting Wang , Rui Chen , Zhilong Zhou , Dongbo Shan

Despite the groundbreaking advancements made by large language models (LLMs), hallucination remains a critical bottleneck for their deployment in high-stakes domains. Existing classification-based methods mainly rely on static and passive…

Machine Learning · Computer Science 2026-05-12 Linggang Kong , Lei Wu , Yunlong Zhang , Xiaofeng Zhong , Zhen Wang , Yongjie Wang , Yao Pan

Large language models (LLMs) can suffer from hallucinations when generating text. These hallucinations impede various applications in society and industry by making LLMs untrustworthy. Current LLMs generate text in an autoregressive fashion…

Machine Learning · Computer Science 2025-11-05 Lukas Aichberger , Kajetan Schweighofer , Mykyta Ielanskyi , Sepp Hochreiter

When using large language models (LLMs) in knowledge-intensive tasks, such as open-domain question answering, external context can bridge the gap between external knowledge and the LLMs' parametric knowledge. Recent research has been…

Computation and Language · Computer Science 2024-10-08 Youna Kim , Hyuhng Joon Kim , Cheonbok Park , Choonghyun Park , Hyunsoo Cho , Junyeob Kim , Kang Min Yoo , Sang-goo Lee , Taeuk Kim

Given a language model (LM), maximum probability is a poor decoding objective for open-ended generation, because it produces short and repetitive text. On the other hand, sampling can often produce incoherent text that drifts from the…

Computation and Language · Computer Science 2023-07-13 Xiang Lisa Li , Ari Holtzman , Daniel Fried , Percy Liang , Jason Eisner , Tatsunori Hashimoto , Luke Zettlemoyer , Mike Lewis

Large Vision-Language Models (LVLMs) have achieved significant success in recent years, and they have been extended to the medical domain. Although demonstrating satisfactory performance on medical Visual Question Answering (VQA) tasks,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Danfeng Guo , Demetri Terzopoulos

Large Vision-Language Models (LVLMs) have achieved impressive performance, yet research has pointed out a serious issue with object hallucinations within these models. However, there is no clear conclusion as to which part of the model…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Yufang Liu , Tao Ji , Changzhi Sun , Yuanbin Wu , Aimin Zhou

The integration of deep learning-based glaucoma detection with large language models (LLMs) presents an automated strategy to mitigate ophthalmologist shortages and improve clinical reporting efficiency. However, applying general LLMs to…

Multiagent Systems · Computer Science 2025-12-18 Philip R. Liu , Sparsh Bansal , Jimmy Dinh , Aditya Pawar , Ramani Satishkumar , Shail Desai , Neeraj Gupta , Xin Wang , Shu Hu

Cognitive Diagnosis Models (CDMs) are designed to assess students' cognitive states by analyzing their performance across a series of exercises. However, existing CDMs often struggle with diagnosing infrequent students and exercises due to…

Artificial Intelligence · Computer Science 2025-02-11 Zhiang Dong , Jingyuan Chen , Fei Wu

Multimodal Large Language Models (MLLMs) have recently demonstrated impressive capabilities in multimodal understanding, reasoning, and interaction. However, existing MLLMs prevalently suffer from serious hallucination problems, generating…

Computation and Language · Computer Science 2024-03-11 Tianyu Yu , Yuan Yao , Haoye Zhang , Taiwen He , Yifeng Han , Ganqu Cui , Jinyi Hu , Zhiyuan Liu , Hai-Tao Zheng , Maosong Sun , Tat-Seng Chua

Medical Multi-modal Large Language Models (MLLMs) have shown promising clinical performance. However, their sensitivity to real-world input perturbations, such as imaging artifacts and textual errors, critically undermines their clinical…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Dunyuan XU , Xikai Yang , Yaoqian Li , Juzheng Miao , Jinpeng Li , Pheng-Ann Heng

In recent years, large language models (LLMs) have made remarkable advancements, yet hallucination, where models produce inaccurate or non-factual statements, remains a significant challenge for real-world deployment. Although current…

Computation and Language · Computer Science 2025-06-03 Qing Li , Jiahui Geng , Zongxiong Chen , Derui Zhu , Yuxia Wang , Congbo Ma , Chenyang Lyu , Fakhri Karray

Large language models accumulate extensive parametric knowledge through pre-training. However, knowledge conflicts occur when outdated or incorrect parametric knowledge conflicts with external knowledge in the context. Existing methods…

Computation and Language · Computer Science 2026-05-13 Yigeng Zhou , Wu Li , Yifan Lu , Yequan Wang , Xuebo Liu , Wenya Wang , Jun Yu , Min Zhang , Jing Li

Generative Vision-Language Models (VLMs) are prone to generate plausible-sounding textual answers that, however, are not always grounded in the input image. We investigate this phenomenon, usually referred to as "hallucination" and show…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Alessandro Favero , Luca Zancato , Matthew Trager , Siddharth Choudhary , Pramuditha Perera , Alessandro Achille , Ashwin Swaminathan , Stefano Soatto

Large Vision-Language Models (LVLMs) have demonstrated impressive multimodal abilities but remain prone to multilingual object hallucination, with a higher likelihood of generating responses inconsistent with the visual input when utilizing…

Computation and Language · Computer Science 2025-06-16 Zekai Ye , Qiming Li , Xiaocheng Feng , Libo Qin , Yichong Huang , Baohang Li , Kui Jiang , Yang Xiang , Zhirui Zhang , Yunfei Lu , Duyu Tang , Dandan Tu , Bing Qin