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Fine-grained video captioning aims to generate detailed, temporally coherent descriptions of video content. However, existing methods struggle to capture subtle video dynamics and rich detailed information. In this paper, we leverage…

人工智能 · 计算机科学 2026-03-24 Jisheng Dang , Yizhou Zhang , Hao Ye , Teng Wang , Siming Chen , Huicheng Zheng , Yulan Guo , Jianhuang Lai , Bin Hu

Direct Preference Optimization (DPO) and its variants have become increasingly popular for aligning language models with human preferences. These methods aim to teach models to better distinguish between chosen (or preferred) and rejected…

计算与语言 · 计算机科学 2025-06-09 Xiliang Yang , Feng Jiang , Qianen Zhang , Lei Zhao , Xiao Li

Current emotional text-to-speech (TTS) models predominantly conduct supervised training to learn the conversion from text and desired emotion to its emotional speech, focusing on a single emotion per text-speech pair. These models only…

音频与语音处理 · 电气工程与系统科学 2024-09-17 Xiaoxue Gao , Chen Zhang , Yiming Chen , Huayun Zhang , Nancy F. Chen

With the rapid advancement of large language models (LLMs), aligning policy models with human preferences has become increasingly critical. Direct Preference Optimization (DPO) has emerged as a promising approach for alignment, acting as an…

人工智能 · 计算机科学 2025-07-15 Wenyi Xiao , Zechuan Wang , Leilei Gan , Shuai Zhao , Zongrui Li , Ruirui Lei , Wanggui He , Luu Anh Tuan , Long Chen , Hao Jiang , Zhou Zhao , Fei Wu

Large language models (LLMs) demonstrate impressive performance but lack the flexibility to adapt to human preferences quickly without retraining. In this work, we introduce Test-time Preference Optimization (TPO), a framework that aligns…

计算与语言 · 计算机科学 2025-01-23 Yafu Li , Xuyang Hu , Xiaoye Qu , Linjie Li , Yu Cheng

Direct Preference Optimization (DPO) is widely used after supervised fine-tuning (SFT) to align language models, yet empirical behavior under small backbones and modest data is under-specified. We systematically compare SFT-only, DPO-only,…

计算与语言 · 计算机科学 2026-03-23 Yuming Feng , Christy Yang

Is the Text to Motion model robust? Recent advancements in Text to Motion models primarily stem from more accurate predictions of specific actions. However, the text modality typically relies solely on pre-trained Contrastive Language-Image…

计算机视觉与模式识别 · 计算机科学 2024-08-19 Wenshuo Chen , Hongru Xiao , Erhang Zhang , Lijie Hu , Lei Wang , Mengyuan Liu , Chen Chen

Direct Preference Optimization (DPO) trains a language model using human preference data, bypassing the explicit reward modeling phase of Reinforcement Learning from Human Feedback (RLHF). By iterating over sentence pairs in a preference…

机器学习 · 计算机科学 2024-10-31 Jae Hyeon Cho , Minkyung Park , Byung-Jun Lee

Direct Preference Optimization (DPO) guides large language models (LLMs) to generate recommendations aligned with user historical behavior distributions by minimizing preference alignment loss. However, our systematic empirical research and…

信息检索 · 计算机科学 2026-05-28 Chu Zhao , Enneng Yang , Jianzhe Zhao , Guibing Guo

This paper presents an exploration of preference learning in text-to-motion generation. We find that current improvements in text-to-motion generation still rely on datasets requiring expert labelers with motion capture systems. Instead,…

机器学习 · 计算机科学 2024-04-16 Jenny Sheng , Matthieu Lin , Andrew Zhao , Kevin Pruvost , Yu-Hui Wen , Yangguang Li , Gao Huang , Yong-Jin Liu

Direct preference optimization (DPO) has shown to be an effective method for large language model (LLM) alignment. Recent works have attempted to apply DPO to multimodal scenarios but have found it challenging to achieve consistent…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Fei Wang , Wenxuan Zhou , James Y. Huang , Nan Xu , Sheng Zhang , Hoifung Poon , Muhao Chen

While reinforcement learning methods such as Group Relative Preference Optimization (GRPO) have significantly enhanced Large Language Models, adapting them to diffusion models remains challenging. In particular, GRPO demands a stochastic…

机器学习 · 计算机科学 2025-10-10 Yihong Luo , Tianyang Hu , Jing Tang

As development of large language models (LLM) progresses, aligning them with human preferences has become increasingly important. We propose stepwise DPO (sDPO), an extension of the recently popularized direct preference optimization (DPO)…

计算与语言 · 计算机科学 2024-10-08 Dahyun Kim , Yungi Kim , Wonho Song , Hyeonwoo Kim , Yunsu Kim , Sanghoon Kim , Chanjun Park

Text-to-image (T2I) diffusion models have made remarkable strides in generating and editing high-fidelity images from text. Yet, these models remain fundamentally generic, failing to adapt to the nuanced aesthetic preferences of individual…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Connor Dunlop , Matthew Zheng , Kavana Venkatesh , Pinar Yanardag

We present SignDPO, a novel multi-level Direct Preference Optimisation (DPO) framework designed to enhance the alignment of skeleton-based Sign Language Translation. While current skeleton-based models have made significant progress using…

计算与语言 · 计算机科学 2026-04-21 Muxin Pu , Xiao-Ming Wu , Mei Kuan Lim , Chun Yong Chong , Wei Li , Chen Change Loy

Direct preference optimization (DPO) methods have shown strong potential in aligning text-to-image diffusion models with human preferences by training on paired comparisons. These methods improve training stability by avoiding the REINFORCE…

计算机视觉与模式识别 · 计算机科学 2025-10-22 Yi-Lun Wu , Bo-Kai Ruan , Chiang Tseng , Hong-Han Shuai

Direct Preference Optimization (DPO) is a widely adopted offline algorithm for preference-based reinforcement learning from human feedback (RLHF), designed to improve training simplicity and stability by redefining reward functions.…

计算与语言 · 计算机科学 2025-05-30 Gengxu Li , Tingyu Xia , Yi Chang , Yuan Wu

Large Vision-Language Models (LVLMs) hold immense potential for complex multimodal instruction following, yet their development is often hindered by the high cost and inconsistency of human annotation required for effective fine-tuning and…

计算与语言 · 计算机科学 2025-08-19 Ruirui Gao , Emily Johnson , Bowen Tan , Yanfei Qian

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

Direct Preference Optimization (DPO) has shown promising results in aligning generative outputs with human preferences by distinguishing between chosen and rejected samples. However, a critical limitation of DPO is likelihood displacement,…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Ruojun Xu , Yu Kai , Xuhua Ren , Jiaxiang Cheng , Bing Ma , Tianxiang Zheng , Qinhlin Lu