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Image restoration (IR) models are typically trained to recover high-quality images using L1 or LPIPS loss. To handle diverse unknown degradations, zero-shot IR methods have also been introduced. However, existing pre-trained and zero-shot…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Bingchen Li , Xin Li , Jiaqi Xu , Jiaming Guo , Wenbo Li , Renjing Pei , Zhibo Chen

ICP algorithms typically involve a fixed choice of data association method and a fixed choice of error metric. In this paper, we propose Hybrid ICP, a novel and flexible ICP variant which dynamically optimises both the data association…

计算机视觉与模式识别 · 计算机科学 2021-09-17 Kamil Dreczkowski , Edward Johns

Current visual text generation models struggle with the trade-off between text accuracy and overall image coherence. We find that achieving high text accuracy can reduce aesthetic quality and instruction-following capability. Although…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Yaohou Fan , Qingzhong Wang , Yongsong Huang , Junyi Liu , Tomo Miyazaki , Shinichiro Omachi

We present a new method for generating controllable, dynamically responsive, and photorealistic human animations. Given an image of a person, our system allows the user to generate Physically plausible Upper Body Animation (PUBA) using…

计算机视觉与模式识别 · 计算机科学 2022-12-12 Ziyuan Huang , Zhengping Zhou , Yung-Yu Chuang , Jiajun Wu , C. Karen Liu

To design rewards that align with human goals, Reinforcement Learning from Human Feedback (RLHF) has emerged as a prominent technique for learning reward functions from human preferences and optimizing policies via reinforcement learning…

机器学习 · 计算机科学 2025-05-14 Taehyun Cho , Seokhun Ju , Seungyub Han , Dohyeong Kim , Kyungjae Lee , Jungwoo Lee

Human preference alignment is critical in building powerful and reliable large language models (LLMs). However, current methods either ignore the multi-dimensionality of human preferences (e.g. helpfulness and harmlessness) or struggle with…

机器学习 · 计算机科学 2024-10-14 Xingzhou Lou , Junge Zhang , Jian Xie , Lifeng Liu , Dong Yan , Kaiqi Huang

Generally speaking, the model training for recommender systems can be based on two types of data, namely explicit feedback and implicit feedback. Moreover, because of its general availability, we see wide adoption of implicit feedback data,…

信息检索 · 计算机科学 2023-04-17 Yi Ren , Hongyan Tang , Jiangpeng Rong , Siwen Zhu

Aligning language models (LMs) with curated human feedback is critical to control their behaviors in real-world applications. Several recent policy optimization methods, such as DPO and SLiC, serve as promising alternatives to the…

Aligning Large Language Models (LLMs) with human feedback is crucial for their development. Existing preference optimization methods such as DPO and KTO, while improved based on Reinforcement Learning from Human Feedback (RLHF), are…

计算与语言 · 计算机科学 2024-12-23 Shuo Xie , Fangzhi Zhu , Jiahui Wang , Lulu Wen , Wei Dai , Xiaowei Chen , Junxiong Zhu , Kai Zhou , Bo Zheng

Hyperparameter optimization (HPO) is important to leverage the full potential of machine learning (ML). In practice, users are often interested in multi-objective (MO) problems, i.e., optimizing potentially conflicting objectives, like…

机器学习 · 计算机科学 2024-01-12 Joseph Giovanelli , Alexander Tornede , Tanja Tornede , Marius Lindauer

Aligning large language models (LLMs) with human preferences has become essential for safe and beneficial AI deployment. While Reinforcement Learning from Human Feedback (RLHF) established the dominant paradigm, a proliferation of…

人工智能 · 计算机科学 2026-01-13 Tarun Raheja , Nilay Pochhi

Artificial Intelligence Generated Content (AIGC) has grown rapidly in recent years, among which AI-based image generation has gained widespread attention due to its efficient and imaginative image creation ability. However, AI-generated…

计算机视觉与模式识别 · 计算机科学 2025-02-04 Jiarui Wang , Huiyu Duan , Guangtao Zhai , Xiongkuo Min

Preference learning is critical for aligning large language models (LLMs) with human values, with the quality of preference datasets playing a crucial role in this process. While existing metrics primarily assess data quality based on…

机器学习 · 计算机科学 2025-03-05 Kexin Huang , Junkang Wu , Ziqian Chen , Xue Wang , Jinyang Gao , Bolin Ding , Jiancan Wu , Xiangnan He , Xiang Wang

Aligning large language models with multiple human expectations and values is crucial for ensuring that they adequately serve a variety of user needs. To this end, offline multiobjective alignment algorithms such as the Rewards-in-Context…

机器学习 · 计算机科学 2026-01-01 Haoran Gu , Handing Wang , Yi Mei , Mengjie Zhang , Yaochu Jin

In this work, we introduce PIPER: Primitive-Informed Preference-based Hierarchical reinforcement learning via Hindsight Relabeling, a novel approach that leverages preference-based learning to learn a reward model, and subsequently uses…

机器学习 · 计算机科学 2024-06-18 Utsav Singh , Wesley A. Suttle , Brian M. Sadler , Vinay P. Namboodiri , Amrit Singh Bedi

This paper addresses the problem of preference learning, which aims to align robot behaviors through learning user specific preferences (e.g. "good pull-over location") from visual demonstrations. Despite its similarity to learning factual…

机器人学 · 计算机科学 2025-01-16 Sadanand Modak , Noah Patton , Isil Dillig , Joydeep Biswas

Large Visual Language Models (LVLMs) increasingly rely on preference alignment to ensure reliability, which steers the model behavior via preference fine-tuning on preference data structured as ``image - winner text - loser text'' triplets.…

计算机视觉与模式识别 · 计算机科学 2025-03-10 Kejia Chen , Jiawen Zhang , Jiacong Hu , Jiazhen Yang , Jian Lou , Zunlei Feng , Mingli Song

Aligning Large Language Models (LLMs) with human preferences is crucial in ensuring desirable and controllable model behaviors. Current methods, such as Reinforcement Learning from Human Feedback (RLHF) and Direct Preference Optimization…

计算与语言 · 计算机科学 2025-10-24 Yang Zhao , Yixin Wang , Mingzhang Yin

Text attribute person search aims to find specific pedestrians through given textual attributes, which is very meaningful in the scene of searching for designated pedestrians through witness descriptions. The key challenge is the…

计算机视觉与模式识别 · 计算机科学 2024-06-07 Xin Wang , Fangfang Liu , Zheng Li , Caili Guo

Reinforcement learning from human feedback (RLHF) effectively promotes preference alignment of text-to-image (T2I) diffusion models. To improve computational efficiency, direct preference optimization (DPO), which avoids explicit reward…

计算机视觉与模式识别 · 计算机科学 2026-05-08 Zhikai Li , Yue Zhao , Edward Zhongwei Zhang , Xuewen Liu , Jing Zhang , Qingyi Gu , Zhen Dong