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Direct Preference Optimization (DPO) has emerged as a predominant alignment method for diffusion models, facilitating off-policy training without explicit reward modeling. However, its reliance on large-scale, high-quality human preference…

计算机视觉与模式识别 · 计算机科学 2026-02-09 Khiem Pham , Quang Nguyen , Tung Nguyen , Jingsen Zhu , Michele Santacatterina , Dimitris Metaxas , Ramin Zabih

Direct Preference Optimisation (DPO) has emerged as a powerful method for aligning Large Language Models (LLMs) with human preferences, offering a stable and efficient alternative to approaches that use Reinforcement learning via Human…

人工智能 · 计算机科学 2025-05-06 Sarvesh Shashidhar , Ritik , Nachiketa Patil , Suraj Racha , Ganesh Ramakrishnan

The field of preference optimization has made outstanding contributions to the alignment of language models with human preferences. Despite these advancements, recent methods still rely heavily on substantial paired (labeled) feedback data,…

机器学习 · 计算机科学 2026-02-20 Seonggyun Lee , Sungjun Lim , Seojin Park , Soeun Cheon , Kyungwoo Song

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

Learning from preference-based feedback has recently gained traction as a promising approach to align language models with human interests. While these aligned generative models have demonstrated impressive capabilities across various…

机器学习 · 计算机科学 2024-04-15 Sayak Ray Chowdhury , Anush Kini , Nagarajan Natarajan

Direct preference optimization (DPO) has shown success in aligning diffusion models with human preference. Previous approaches typically assume a consistent preference label between final generations and noisy samples at intermediate steps,…

机器学习 · 计算机科学 2025-02-05 Jie Ren , Yuhang Zhang , Dongrui Liu , Xiaopeng Zhang , Qi Tian

Modern alignment pipelines are increasingly replacing expensive human preference labels with evaluations from large language models (LLM-as-Judge). However, AI labels can be systematically biased compared to high-quality human feedback…

机器学习 · 统计学 2026-02-10 Xintao Xia , Zhiqiu Xia , Linjun Zhang , Zhanrui Cai

While preference optimization is crucial for improving visual generative models, how to effectively scale this paradigm remains largely unexplored. Current open-source preference datasets contain conflicting preference patterns, where…

计算机视觉与模式识别 · 计算机科学 2026-04-30 Ming Li , Jie Wu , Justin Cui , Xiaojie Li , Rui Wang , Chen Chen

Generative AI can now synthesize strikingly realistic images from text, yet output quality remains highly sensitive to how prompts are phrased. Direct Preference Optimization (DPO) offers a lightweight, off-policy alternative to RL for…

计算与语言 · 计算机科学 2025-07-30 Anas Mohamed , Azal Ahmad Khan , Xinran Wang , Ahmad Faraz Khan , Shuwen Ge , Saman Bahzad Khan , Ayaan Ahmad , Ali Anwar

Diffusion models have achieved impressive results in generative tasks such as text-to-image synthesis, yet they often struggle to fully align outputs with nuanced user intent and maintain consistent aesthetic quality. Existing…

计算机视觉与模式识别 · 计算机科学 2025-12-30 Dohyun Kim , Seungwoo Lyu , Seung Wook Kim , Paul Hongsuck Seo

Optimizing policies based on human preferences is key to aligning language models with human intent. This work focuses on reward modeling, a core component in reinforcement learning from human feedback (RLHF), and offline preference…

机器学习 · 计算机科学 2025-06-02 Soichiro Nishimori , Yu-Jie Zhang , Thanawat Lodkaew , Masashi Sugiyama

Direct Preference Optimization (DPO) has recently been applied as a post-training technique for text-to-video diffusion models. To obtain training data, annotators are asked to provide preferences between two videos generated from…

计算机视觉与模式识别 · 计算机科学 2025-10-13 Ziyi Wu , Anil Kag , Ivan Skorokhodov , Willi Menapace , Ashkan Mirzaei , Igor Gilitschenski , Sergey Tulyakov , Aliaksandr Siarohin

Semi-supervised learning aims to leverage a large amount of unlabeled data for performance boosting. Existing works primarily focus on image classification. In this paper, we delve into semi-supervised learning for object detection, where…

计算机视觉与模式识别 · 计算机科学 2021-11-02 Zhenyu Wang , Yali Li , Ye Guo , Shengjin Wang

Recent advancements in Direct Preference Optimization (DPO) have significantly enhanced the alignment of Large Language Models (LLMs) with human preferences, owing to its simplicity and effectiveness. However, existing methods typically…

计算与语言 · 计算机科学 2024-10-28 Shilong Li , Yancheng He , Hui Huang , Xingyuan Bu , Jiaheng Liu , Hangyu Guo , Weixun Wang , Jihao Gu , Wenbo Su , Bo Zheng

Direct Preference Optimization (DPO) has emerged as a prominent algorithm for the direct and robust alignment of Large Language Models (LLMs) with human preferences, offering a more straightforward alternative to the complex Reinforcement…

计算与语言 · 计算机科学 2024-12-10 Junru Lu , Jiazheng Li , Siyu An , Meng Zhao , Yulan He , Di Yin , Xing Sun

While dense pixel-wise annotations remain the gold standard for medical image segmentation, they are costly to obtain and limit scalability. In contrast, many deployed systems already produce inexpensive automatic quality-control (QC)…

计算机视觉与模式识别 · 计算机科学 2026-02-02 Hamza Kalisch , Constantin Seibold , Jens Kleesiek , Ken Herrmann , Frederic Jonske

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

The remarkable success of today's deep neural networks highly depends on a massive number of correctly labeled data. However, it is rather costly to obtain high-quality human-labeled data, leading to the active research area of training…

机器学习 · 计算机科学 2020-11-04 Jiacheng Wang , Yue Ma , Shuang Gao

Direct Preference Optimization (DPO) has become a popular method for fine-tuning large language models (LLMs) due to its stability and simplicity. However, it is also known to be sensitive to noise in the data and prone to overfitting.…

机器学习 · 计算机科学 2025-10-28 Cheol Woo Kim , Shresth Verma , Mauricio Tec , Milind Tambe

Large Language Models (LLMs) have made significant strides in generating human-like responses, largely due to preference alignment techniques. However, these methods often assume unbiased human feedback, which is rarely the case in…

机器学习 · 计算机科学 2025-09-16 Amirabbas Afzali , Amirhossein Afsharrad , Seyed Shahabeddin Mousavi , Sanjay Lall
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