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Radiography Report Generation (RRG) has gained significant attention in medical image analysis as a promising tool for alleviating the growing workload of radiologists. However, despite numerous advancements, existing methods have yet to…

计算机视觉与模式识别 · 计算机科学 2025-09-29 Valentin Samokhin , Boris Shirokikh , Mikhail Goncharov , Dmitriy Umerenkov , Maksim Bobrin , Ivan Oseledets , Dmitry Dylov , Mikhail Belyaev

Most Video Large Language Models (Video-LLMs) adopt preference alignment techniques, e.g., DPO~\citep{rafailov2024dpo}, to optimize the reward margin between a winning response ($y_w$) and a losing response ($y_l$). However, the likelihood…

计算机视觉与模式识别 · 计算机科学 2025-06-06 Xiaodong Wang , Jinfa Huang , Li Yuan , Peixi Peng

Direct Preference Optimization (DPO) has emerged as a compelling approach for training Large Language Models (LLMs) to adhere to human preferences. However, the performance of DPO is sensitive to the fine-tuning of its trade-off parameter…

人工智能 · 计算机科学 2024-10-15 Junkang Wu , Yuexiang Xie , Zhengyi Yang , Jiancan Wu , Jinyang Gao , Bolin Ding , Xiang Wang , Xiangnan He

Matching job descriptions (JDs) with suitable talent requires models capable of understanding not only textual similarities between JDs and candidate resumes but also contextual factors such as geographical location and academic seniority.…

计算与语言 · 计算机科学 2025-03-17 Yafei Zhang , Murray Wang , Yu Wang , Xiaohui Wang

Large Language Models (LLMs) have demonstrated remarkable potential in automating software development tasks. While recent advances leverage Supervised Fine-Tuning (SFT) and Direct Preference Optimization (DPO) to align models with human…

软件工程 · 计算机科学 2025-12-09 Xin Yin , Chao Ni , Xiaohu Yang

Offline paired preference optimization algorithms have become a popular approach for fine-tuning on preference data, outperforming traditional supervised fine-tuning in various tasks. However, traditional implementations often involve…

机器学习 · 计算机科学 2024-11-01 Franklin Wang , Sumanth Hegde

Large Vision-Language Models (LVLMs) or multimodal large language models represent a significant advancement in artificial intelligence, enabling systems to understand and generate content across both visual and textual modalities. While…

机器学习 · 计算机科学 2025-09-09 Thanh Thi Nguyen , Campbell Wilson , Janis Dalins

Direct Preference Optimization (DPO) has become a popular approach for aligning language models using pairwise preferences. However, in practical post-training pipelines, on-policy generation typically yields multiple candidate responses…

机器学习 · 计算机科学 2025-06-23 Taneesh Gupta , Rahul Madhavan , Xuchao Zhang , Nagarajan Natarajan , Chetan Bansal , Saravan Rajmohan

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…

人工智能 · 计算机科学 2025-12-23 Wenqi Liu , Xuemeng Song , Jiaxi Li , Yinwei Wei , Na Zheng , Jianhua Yin , Liqiang Nie

Aligning large language models (LLMs) with human preferences has gained significant attention, with Proximal Policy Optimization (PPO) as a standard yet computationally expensive method and Direct Preference Optimization (DPO) as a more…

人工智能 · 计算机科学 2025-02-10 Yuzi Yan , Yibo Miao , Jialian Li , Yipin Zhang , Jian Xie , Zhijie Deng , Dong Yan

The integration of preference alignment with diffusion models (DMs) has emerged as a transformative approach to enhance image generation and editing capabilities. Although integrating diffusion models with preference alignment strategies…

计算机视觉与模式识别 · 计算机科学 2025-02-13 Sihao Wu , Xiaonan Si , Chi Xing , Jianhong Wang , Gaojie Jin , Guangliang Cheng , Lijun Zhang , Xiaowei Huang

Despite the recent progress in news summarization made by large language models (LLMs), they often generate summaries that are factually inconsistent with original articles, known as "hallucinations" in text generation. Unlike previous…

计算与语言 · 计算机科学 2025-02-17 Huawen Feng , Yan Fan , Xiong Liu , Ting-En Lin , Zekun Yao , Yuchuan Wu , Fei Huang , Yongbin Li , Qianli Ma

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

Recent advances in audio-driven portrait animation have demonstrated impressive capabilities. However, existing methods struggle to align with fine-grained human preferences across multiple dimensions, such as motion naturalness, lip-sync…

计算机视觉与模式识别 · 计算机科学 2025-08-18 MengChao Wang , Qiang Wang , Fan Jiang , Mu Xu

Recently, preference optimization methods such as DPO have significantly enhanced large language models (LLMs) in wide tasks including dialogue and question-answering. However, current methods fail to account for the varying difficulty…

计算与语言 · 计算机科学 2024-12-31 Jingyuan Ma , Rui Li , Zheng Li , Lei Sha , Zhifang Sui

Multi-preference optimization enriches language-model alignment beyond pairwise preferences by contrasting entire sets of helpful and undesired responses, thereby enabling richer training signals for large language models. During self-play…

机器学习 · 计算机科学 2025-06-10 Taneesh Gupta , Rahul Madhavan , Xuchao Zhang , Chetan Bansal , Saravan Rajmohan

Fine-tuning pre-trained Large Language Models (LLMs) is essential to align them with human values and intentions. This process often utilizes methods like pairwise comparisons and KL divergence against a reference LLM, focusing on the…

计算与语言 · 计算机科学 2024-09-02 Yongcheng Zeng , Guoqing Liu , Weiyu Ma , Ning Yang , Haifeng Zhang , Jun Wang

Iterative data generation and model retraining are widely used to align large language models (LLMs). It typically involves a policy model to generate on-policy responses and a reward model to guide training data selection. Direct…

计算与语言 · 计算机科学 2025-07-01 Yao Xiao , Hai Ye , Linyao Chen , Hwee Tou Ng , Lidong Bing , Xiaoli Li , Roy Ka-wei Lee

Large Language Models (LLMs) have demonstrated remarkable performance across various domains, motivating researchers to investigate their potential use in recommendation systems. However, directly applying LLMs to recommendation tasks has…

信息检索 · 计算机科学 2024-06-21 Zhuoxi Bai , Ning Wu , Fengyu Cai , Xinyi Zhu , Yun Xiong

The next token prediction loss is the dominant self-supervised training objective for large language models and has achieved promising results in a variety of downstream tasks. However, upon closer investigation of this objective, we find…

计算与语言 · 计算机科学 2025-02-25 Zhili Feng , Dhananjay Ram , Cole Hawkins , Aditya Rawal , Jinman Zhao , Sheng Zha