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Vision Language models (VLMs) often hallucinate non-existent objects. Detecting hallucination is analogous to detecting deception: a single final statement is insufficient, one must examine the underlying reasoning process. Yet existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Abin Shoby , Ta Duc Huy , Tuan Dung Nguyen , Minh Khoi Ho , Qi Chen , Anton van den Hengel , Phi Le Nguyen , Johan W. Verjans , Vu Minh Hieu Phan

Large Vision-Language Models (LVLMs) bridge the gap between visual and linguistic modalities, demonstrating strong potential across a variety of domains. However, despite significant progress, LVLMs still suffer from severe hallucination…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Ruiqi Ma , Yu Yan , Chunhong Zhang , Minghao Yin , XinChao Liu , Zhihong Jin , Zheng Hu

Large Vision-Language Models have demonstrated exceptional performance in multimodal reasoning and complex scene understanding. However, these models still face significant hallucination issues, where outputs contradict visual facts. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Wei Suo , Hanzu Zhang , Lijun Zhang , Ji Ma , Peng Wang , Yanning Zhang

Large Language Models (LLMs) exhibit remarkable capabilities in natural language understanding and reasoning, but suffer from hallucination: the generation of factually incorrect content. While numerous methods have been developed to reduce…

Computation and Language · Computer Science 2026-01-22 Mohor Banerjee , Nadya Yuki Wangsajaya , Syed Ali Redha Alsagoff , Min Sen Tan , Zachary Choy Kit Chun , Alvin Chan Guo Wei

Large language models (LLMs) have demonstrated remarkable performance on various natural language processing tasks. However, they are prone to generating fluent yet untruthful responses, known as "hallucinations". Hallucinations can lead to…

Computation and Language · Computer Science 2024-06-18 Minda Hu , Bowei He , Yufei Wang , Liangyou Li , Chen Ma , Irwin King

Despite the promising progress in multi-modal tasks, current large multi-modal models (LMMs) are prone to hallucinating inconsistent descriptions with respect to the associated image and human instructions. This paper addresses this issue…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Fuxiao Liu , Kevin Lin , Linjie Li , Jianfeng Wang , Yaser Yacoob , Lijuan Wang

Recently, Omni-modal large language models (OLLMs) have sparked a new wave of research, achieving impressive results in tasks such as audio-video understanding and real-time environment perception. However, hallucination issues still…

Artificial Intelligence · Computer Science 2025-09-03 Junzhe Chen , Tianshu Zhang , Shiyu Huang , Yuwei Niu , Chao Sun , Rongzhou Zhang , Guanyu Zhou , Lijie Wen , Xuming Hu

This research work delves into the manifestation of hallucination within Large Language Models (LLMs) and its consequential impacts on applications within the domain of mental health. The primary objective is to discern effective strategies…

Computation and Language · Computer Science 2024-10-16 Abdul Muqtadir , Hafiz Syed Muhammad Bilal , Ayesha Yousaf , Hafiz Farooq Ahmed , Jamil Hussain

Large language models (LLMs) frequently generate confident yet inaccurate responses, introducing significant risks for deployment in safety-critical domains. We present a novel, test-time approach to detecting model hallucination through…

Machine Learning · Computer Science 2025-10-07 Hazel Kim , Tom A. Lamb , Adel Bibi , Philip Torr , Yarin Gal

Hallucinations in large language models (LLMs) refer to the phenomenon of LLMs producing responses that are coherent yet factually inaccurate. This issue undermines the effectiveness of LLMs in practical applications, necessitating research…

Computation and Language · Computer Science 2024-06-11 Weihang Su , Changyue Wang , Qingyao Ai , Yiran HU , Zhijing Wu , Yujia Zhou , Yiqun Liu

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

Large-scale vision-language models have demonstrated impressive skill in handling tasks that involve both areas. Nevertheless, these models frequently experience significant issues with generating inaccurate information, which is…

Computation and Language · Computer Science 2024-05-07 Huixuan Zhang , Junzhe Zhang , Xiaojun Wan

Difficult decision-making problems abound in various disciplines and domains. The proliferation of generative techniques, especially large language models (LLMs), has excited interest in using them for decision support. However, LLMs cannot…

Artificial Intelligence · Computer Science 2025-09-16 Boris Kovalerchuk , Brent D. Fegley

Uncertainty estimation is a necessary component when implementing AI in high-risk settings, such as autonomous cars, medicine, or insurances. Large Language Models (LLMs) have seen a surge in popularity in recent years, but they are subject…

Machine Learning · Computer Science 2024-12-09 Gabriel Y. Arteaga , Thomas B. Schön , Nicolas Pielawski

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

Due to the unidirectional masking mechanism, Decoder-Only models propagate information from left to right. LVLMs (Large Vision-Language Models) follow the same architecture, with visual information gradually integrated into semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Jianfei Zhao , Feng Zhang , Xin Sun , Chong Feng

Recently, multimodal large language models (MLLMs) have demonstrated remarkable performance in visual-language tasks. However, the authenticity of the responses generated by MLLMs is often compromised by object hallucinations. We identify…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Shuo Li , Jiajun Sun , Guodong Zheng , Xiaoran Fan , Yujiong Shen , Yi Lu , Zhiheng Xi , Yuming Yang , Wenming Tan , Tao Ji , Tao Gui , Qi Zhang , Xuanjing Huang

Object hallucination remains a primary obstacle to the reliable deployment of Multimodal Large Language Models (MLLMs). Current inference-time mitigation methods mainly assume hallucinations stem from visual neglect, steering models to…

Computation and Language · Computer Science 2026-05-28 Jingwen Wu , Xijun Zhang , Ge Song

Hallucinations in Large Language Model (LLM) outputs for Question Answering (QA) tasks can critically undermine their real-world reliability. This paper introduces a methodology for robust, one-shot hallucination detection, specifically…

Computation and Language · Computer Science 2026-01-21 Charles Moslonka , Hicham Randrianarivo , Arthur Garnier , Emmanuel Malherbe

Reducing and detecting hallucinations in large language models is an open research problem. In this project, we attempt to leverage recent advances in the field of uncertainty estimation to reduce hallucinations in frozen large language…

Computation and Language · Computer Science 2023-12-27 Shreyas Verma , Kien Tran , Yusuf Ali , Guangyu Min