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Multimodal Large Language Models (MLLMs) are known to hallucinate, which limits their practical applications. Recent works have attempted to apply Direct Preference Optimization (DPO) to enhance the performance of MLLMs, but have shown…

Computation and Language · Computer Science 2024-11-18 Yuhan Fu , Ruobing Xie , Xingwu Sun , Zhanhui Kang , Xirong Li

Direct Preference Optimization (DPO) has been demonstrated to be highly effective in mitigating hallucinations in Large Vision Language Models (LVLMs) by aligning their outputs more closely with human preferences. Despite the recent…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Jihao Gu , Yingyao Wang , Meng Cao , Pi Bu , Jun Song , Yancheng He , Shilong Li , Bo Zheng

Direct Preference Optimization (DPO) has shown strong potential for mitigating hallucinations in Multimodal Large Language Models (MLLMs). However, existing multimodal DPO approaches often suffer from overfitting due to the difficulty…

Artificial Intelligence · Computer Science 2026-01-05 Longtian Qiu , Shan Ning , Chuyu Zhang , Jiaxuan Sun , Xuming He

Multimodal Large Language Models (MLLMs) emerge as a unified interface to address a multitude of tasks, ranging from NLP to computer vision. Despite showcasing state-of-the-art results in many benchmarks, a long-standing issue is the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Alberto Compagnoni , Davide Caffagni , Nicholas Moratelli , Lorenzo Baraldi , Marcella Cornia , Rita Cucchiara

Machine Translation (MT) is undergoing a paradigm shift, with systems based on fine-tuned large language models (LLM) becoming increasingly competitive with traditional encoder-decoder models trained specifically for translation tasks.…

Computation and Language · Computer Science 2025-01-30 Zilu Tang , Rajen Chatterjee , Sarthak Garg

Multimodal large language models have made significant advancements in recent years, yet they still suffer from a common issue known as the "hallucination problem", in which the models generate textual descriptions that inaccurately depict…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Zhiyuan Zhao , Bin Wang , Linke Ouyang , Xiaoyi Dong , Jiaqi Wang , Conghui He

Large Vision-Language Models (LVLMs) frequently suffer from hallucinations. Existing preference learning-based approaches largely rely on proprietary models to construct preference datasets. We identify that this reliance introduces a…

Artificial Intelligence · Computer Science 2026-04-28 Byeonggeuk Lim , JungMin Yun , Junehyoung Kwon , Kyeonghyun Kim , YoungBin Kim

Direct Preference Optimization (DPO) has emerged as an effective approach for mitigating hallucination in Multimodal Large Language Models (MLLMs). Although existing methods have achieved significant progress by utilizing vision-oriented…

Artificial Intelligence · Computer Science 2025-12-23 Wenqi Liu , Xuemeng Song , Jiaxi Li , Yinwei Wei , Na Zheng , Jianhua Yin , Liqiang Nie

Hallucination remains a fundamental challenge in vision-language models (VLMs), where autoregressive generation may produce linguistically plausible yet physically inconsistent or visually ungrounded responses due to likelihood maximization…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Qinwu Xu

Hallucination remains a major challenge for Large Vision-Language Models (LVLMs). Direct Preference Optimization (DPO) has gained increasing attention as a simple solution to hallucination issues. It directly learns from constructed…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Zhihe Yang , Xufang Luo , Dongqi Han , Yunjian Xu , Dongsheng Li

Recently, large vision-language models (LVLMs) have risen to be a promising approach for multimodal tasks. However, principled hallucination mitigation remains a critical challenge.In this work, we first analyze the data generation process…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Chengzhi Yu , Yifan Xu , Yifan Chen , Wenyi Zhang

The success of Direct Preference Optimization (DPO) in mitigating hallucinations in Vision Language Models (VLMs) critically hinges on the true reward gaps within preference pairs. However, current methods, typically relying on ranking or…

Computation and Language · Computer Science 2025-11-25 Lehan He , Zeren Chen , Zhelun Shi , Tianyu Yu , Jing Shao , Lu Sheng

Recent advances in audio-based generative language models have accelerated AI-driven lyric-to-song generation. However, these models frequently suffer from content hallucination, producing outputs misaligned with the input lyrics and…

Large vision-language models (LVLMs) suffer from hallucination, resulting in misalignment between the output textual response and the input visual content. Recent research indicates that the over-reliance on the Large Language Model (LLM)…

Computer Vision and Pattern Recognition · Computer Science 2024-11-06 Yuxi Xie , Guanzhen Li , Xiao Xu , Min-Yen Kan

Multimodal Large Reasoning Models introduce the reasoning paradigm, demonstrating strong capabilities on complex vision-language tasks. However, they still suffer from severe hallucinations. Existing training-based methods typically…

Artificial Intelligence · Computer Science 2026-05-28 Jiawei Kong , Hao Fang , Shunxiang Liao , Jinyu Li , Bin Chen , Hao Wu , Shu-Tao Xia , Min Zhang

Direct Preference Optimization (DPO) has proven to be an effective solution for mitigating hallucination in Multimodal Large Language Models (MLLMs) by learning from preference pairs. One of its key challenges lies in how to transfer the…

Machine Learning · Computer Science 2026-05-07 Huatian Zhang , Zhendong Mao , Lei Zhang , Yongdong Zhang

Hallucination remains a fundamental challenge for Multimodal Large Language Models (MLLMs). While Direct Preference Optimization (DPO) is a key alignment framework, existing approaches often rely heavily on costly external evaluators for…

Machine Learning · Computer Science 2026-02-04 Yuanshuai Li , Yuping Yan , Jirui Han , Fei Ming , Lingjuan Lv , Yaochu Jin

Large Language Models (LLMs) have become increasingly important in natural language processing, enabling advanced data analytics through natural language queries. However, these models often generate "hallucinations"-inaccurate or…

Computation and Language · Computer Science 2024-10-29 Mikhail Rumiantsau , Aliaksei Vertsel , Ilya Hrytsuk , Isaiah Ballah

Although Large Visual Language Models (LVLMs) have demonstrated exceptional abilities in understanding multimodal data, they invariably suffer from hallucinations, leading to a disconnect between the generated text and the corresponding…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Xinyu Lyu , Beitao Chen , Lianli Gao , Jingkuan Song , Heng Tao Shen

Hallucination has been a long-standing and inevitable problem that hinders the application of Large Vision-Language Models (LVLMs) in domains that require high reliability. Various methods focus on improvement depending on data annotations…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Chao Wang , Jianming Yang , Yang Zhou
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