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Current video-to-audio (V2A) methods struggle in complex multi-event scenarios (video scenarios involving multiple sound sources, sound events, or transitions) due to two critical limitations. First, existing methods face challenges in…

多媒体 · 计算机科学 2025-11-05 Jianxuan Yang , Xiaoran Yang , Lipan Zhang , Xinyue Guo , Zhao Wang , Gongping Huang

Direct Preference Optimization (DPO) has been successfully used to align large language models (LLMs) according to human preferences, and more recently it has also been applied to improving the quality of text-to-image diffusion models.…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Shivanshu Shekhar , Shreyas Singh , Tong Zhang

Multimodal Large Language Models (MLLMs) have significantly improved the performance of various tasks, but continue to suffer from visual hallucinations, a critical issue where generated responses contradict visual evidence. While Direct…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Yuanshuai Li , Yuping Yan , Junfeng Tang , Yunxuan Li , Zeqi Zheng , Yaochu Jin

This study demonstrates that a Multimodal Large Language Model (MLLM) adapted via Low-Rank Adaptation (LoRA) can perform both Automatic Pronunciation Assessment (APA) and Mispronunciation Detection and Diagnosis (MDD) simultaneously.…

计算与语言 · 计算机科学 2025-09-04 Taekyung Ahn , Hosung Nam

Direct Preference Optimization (DPO) controls the trade-off between fitting preference labels and staying close to a reference model using a single global temperature beta, implicitly treating all preference pairs as equally informative.…

计算与语言 · 计算机科学 2026-02-02 Chaoyue He , Xin Zhou , Di Wang , Hong Xu , Wei Liu , Chunyan Miao

Recent advances in large vision-language models (LVLMs) have shown promise for embodied task planning, yet they struggle with fundamental challenges like dependency constraints and efficiency. Existing approaches either solely optimize…

计算与语言 · 计算机科学 2025-03-14 Siyin Wang , Zhaoye Fei , Qinyuan Cheng , Shiduo Zhang , Panpan Cai , Jinlan Fu , Xipeng Qiu

Aligning large language models with human preferences is crucial for their safe deployment. While Direct Preference Optimization (DPO) offers an efficient alternative to reinforcement learning from human feedback, traditional DPO methods…

人工智能 · 计算机科学 2025-07-30 Mengyang Li , Zhong Zhang

This study addresses the challenge of noise in training datasets for Direct Preference Optimization (DPO), a method for aligning Large Language Models (LLMs) with human preferences. We categorize noise into pointwise noise, which includes…

机器学习 · 计算机科学 2025-04-21 Junkang Wu , Yuexiang Xie , Zhengyi Yang , Jiancan Wu , Jiawei Chen , Jinyang Gao , Bolin Ding , Xiang Wang , Xiangnan He

Multimodal large language models (MLLMs) have achieved remarkable success across various tasks. However, separate training of visual and textual encoders often results in a misalignment of the modality. Such misalignment may lead models to…

计算机视觉与模式识别 · 计算机科学 2025-06-09 Songtao Jiang , Yan Zhang , Ruizhe Chen , Tianxiang Hu , Yeying Jin , Qinglin He , Yang Feng , Jian Wu , Zuozhu Liu

Enhancing the conformity of large language models (LLMs) to human preferences remains an ongoing research challenge. Recently, offline approaches such as Direct Preference Optimization (DPO) have gained prominence as attractive options due…

机器学习 · 计算机科学 2024-09-05 Kaihui Chen , Hao Yi , Qingyang Li , Tianyu Qi , Yulan Hu , Fuzheng Zhang , Yong Liu

While Masked Diffusion Models (MDMs), such as LLaDA, present a promising paradigm for language modeling, there has been relatively little effort in aligning these models with human preferences via reinforcement learning. The challenge…

机器学习 · 计算机科学 2025-10-14 Fengqi Zhu , Rongzhen Wang , Shen Nie , Xiaolu Zhang , Chunwei Wu , Jun Hu , Jun Zhou , Jianfei Chen , Yankai Lin , Ji-Rong Wen , Chongxuan Li

Aviation training is a core link in ensuring flight safety, improving industry efficiency and promoting sustainable development. It not only involves flight simulation but also requires the learning of a great deal of professional aviation…

人工智能 · 计算机科学 2025-06-18 Jia'ang Wan , Feng Shen , Fujuan Li , Yanjin Sun , Yan Li , Shiwen Zhang

Group Relative Policy Optimization(GRPO) has become a cornerstone of modern reinforcement learning alignment, prized for its efficacy in foregoing an explicit value-critic by leveraging reward normalization across sampled trajectory…

计算与语言 · 计算机科学 2026-05-29 Redacted by arXiv

In recent years, we have witnessed significant performance boost in the image captioning task based on vision-language pre-training (VLP). Scale is believed to be an important factor for this advance. However, most existing work only…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Xiaowei Hu , Zhe Gan , Jianfeng Wang , Zhengyuan Yang , Zicheng Liu , Yumao Lu , Lijuan Wang

Existing open-source multimodal large language models (MLLMs) generally follow a training process involving pre-training and supervised fine-tuning. However, these models suffer from distribution shifts, which limit their multimodal…

计算与语言 · 计算机科学 2025-04-08 Weiyun Wang , Zhe Chen , Wenhai Wang , Yue Cao , Yangzhou Liu , Zhangwei Gao , Jinguo Zhu , Xizhou Zhu , Lewei Lu , Yu Qiao , Jifeng Dai

Large Language Models (LLMs) have demonstrated exceptional proficiency in text understanding and embedding tasks. However, their potential in multimodal representation, particularly for item-to-item (I2I) recommendations, remains…

信息检索 · 计算机科学 2025-01-22 Chao Zhang , Haoxin Zhang , Shiwei Wu , Di Wu , Tong Xu , Xiangyu Zhao , Yan Gao , Yao Hu , Enhong Chen

Large Reasoning Models (LRMs) have shown exceptional reasoning capabilities, but they also suffer from the issue of overthinking, often generating excessively long and redundant answers. For problems that exceed the model's capabilities,…

机器学习 · 计算机科学 2026-03-23 Yinan Xia , Haotian Zhang , Huiming Wang

Large language models (LLMs) are fine-tuned using human comparison data with Reinforcement Learning from Human Feedback (RLHF) methods to make them better aligned with users' preferences. In contrast to LLMs, human preference learning has…

计算机视觉与模式识别 · 计算机科学 2023-11-23 Bram Wallace , Meihua Dang , Rafael Rafailov , Linqi Zhou , Aaron Lou , Senthil Purushwalkam , Stefano Ermon , Caiming Xiong , Shafiq Joty , Nikhil Naik

Although LLMs have achieved significant success, their reliance on large volumes of human-annotated data has limited their potential for further scaling. In this situation, utilizing self-generated synthetic data has become crucial for…

计算与语言 · 计算机科学 2026-03-17 Haoyan Yang , Khiem Le , Ting Hua , Shangqian Gao , Binfeng Xu , Zheng Tang , Jie Xu , Nitesh V. Chawla , Hongxia Jin , Vijay Srinivasan

Long videos contain a vast amount of information, making video-text retrieval an essential and challenging task in multimodal learning. However, existing benchmarks suffer from limited video duration, low-quality captions, and coarse…

计算机视觉与模式识别 · 计算机科学 2026-02-05 Qifeng Cai , Hao Liang , Zhaoyang Han , Hejun Dong , Meiyi Qiang , Ruichuan An , Quanqing Xu , Bin Cui , Wentao Zhang