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Federated Learning (FL) faces major challenges in real-world deployments due to statistical heterogeneity across clients and system heterogeneity arising from resource-constrained devices. While clustering-based approaches mitigate…

Machine Learning · Computer Science 2026-03-03 Om Govind Jha , Harsh Shukla , Haroon R. Lone

Large-scale text-to-image foundation models have achieved remarkable visual realism, yet generating human images with correct anatomical structures remains challenging. Existing approaches enforce anatomical constraints through…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Bao Li , Yuliang Xiu , Zhen Liu

Person Re-IDentification (ReID) aims at re-identifying persons from different viewpoints across multiple cameras. Capturing the fine-grained appearance differences is often the key to accurate person ReID, because many identities can be…

Computer Vision and Pattern Recognition · Computer Science 2020-09-23 Cheng Yan , Guansong Pang , Xiao Bai , Jun Zhou , Lin Gu

Deployment of machine learning algorithms into real-world practice is still a difficult task. One of the challenges lies in the unpredictable variability of input data, which may differ significantly among individual users, institutions,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Roman Stoklasa

We have proposed a novel method for Synthetic High Range Resolution (HRR) profiling, under the condition of missing frequency domain samples. This new approach estimates the autocovariance function (ACF) of the signal by valid sample pairs.…

Information Theory · Computer Science 2014-11-04 Yang Hu , Huadong Meng , Yimin Liu , Xiqin Wang

When discussing the Aerial-Ground Person Re-identification (AGPReID) task, we face the main challenge of the significant appearance variations caused by different viewpoints, making identity matching difficult. To address this issue,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Shining Wang , Yunlong Wang , Ruiqi Wu , Bingliang Jiao , Wenxuan Wang , Peng Wang

Despite significant progress, controlled generation of complex images with interacting people remains difficult. Existing layout generation methods fall short of synthesizing realistic person instances; while pose-guided generation…

Computer Vision and Pattern Recognition · Computer Science 2020-08-31 Weidong Yin , Ziwei Liu , Leonid Sigal

Person re-identification (re-ID) aims to accurately re- trieve a person from a large-scale database of images cap- tured across multiple cameras. Existing works learn deep representations using a large training subset of unique per- sons.…

Computer Vision and Pattern Recognition · Computer Science 2018-03-29 Jubin Johnson , Shunsuke Yasugi , Yoichi Sugino , Sugiri Pranata , Shengmei Shen

AI systems rely on extensive training on large datasets to address various tasks. However, image-based systems, particularly those used for demographic attribute prediction, face significant challenges. Many current face image datasets…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Georgia Baltsou , Ioannis Sarridis , Christos Koutlis , Symeon Papadopoulos

Due to the rising concern of data privacy, it's reasonable to assume the local client data can't be transferred to a centralized server, nor their associated identity label is provided. To support continuous learning and fill the last-mile…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Wenbin Zhu , Chien-Yi Wang , Kuan-Lun Tseng , Shang-Hong Lai , Baoyuan Wang

Facial recognition has become a widely used method for authentication and identification, with applications for secure access and locating missing persons. Its success is largely attributed to deep learning, which leverages large datasets…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Pedro Vidal , Bernardo Biesseck , Luiz E. L. Coelho , Roger Granada , David Menotti

Paired image-text data with subtle variations in-between (e.g., people holding surfboards vs. people holding shovels) hold the promise of producing Vision-Language Models with proper compositional understanding. Synthesizing such training…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Haoxin Li , Boyang Li

Continual fine-tuning aims to adapt a pre-trained backbone to new tasks sequentially while preserving performance on earlier tasks whose data are no longer available. Existing approaches fall into two categories which include input- and…

Machine Learning · Computer Science 2026-03-17 Hang Thi-Thuy Le , Long Minh Bui , Minh Hoang , Trong Nghia Hoang

This paper aims at a newly raising task in visual surveillance: re-identifying people at a distance by matching body information, given several reference examples. Most of existing works solve this task by matching a reference template with…

Computer Vision and Pattern Recognition · Computer Science 2015-02-03 Yuanlu Xu , Liang Lin , Wei-Shi Zheng , Xiaobai Liu

Click-Through Rate (CTR) prediction, a core task in recommendation systems, aims to estimate the probability of users clicking on items. Existing models predominantly follow a discriminative paradigm, which relies heavily on explicit…

Information Retrieval · Computer Science 2025-12-17 Mingjia Yin , Junwei Pan , Hao Wang , Ximei Wang , Shangyu Zhang , Jie Jiang , Defu Lian , Enhong Chen

The main difficulty of person re-identification (ReID) lies in collecting annotated data and transferring the model across different domains. This paper presents UnrealPerson, a novel pipeline that makes full use of unreal image data to…

Computer Vision and Pattern Recognition · Computer Science 2020-12-10 Tianyu Zhang , Lingxi Xie , Longhui Wei , Zijie Zhuang , Yongfei Zhang , Bo Li , Qi Tian

Generative diffusion models show promise for data augmentation. However, applying them to fine-grained tasks presents a significant challenge: ensuring synthetic images accurately capture the subtle, category-defining features critical for…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Zhiguang Lu , Qianqian Xu , Peisong Wen , Siran Dai , Qingming Huang

Representation Fine-tuning (ReFT), a recently proposed Parameter-Efficient Fine-Tuning (PEFT) method, has attracted widespread attention for significantly improving parameter efficiency by editing representation space alone. In this work,…

Computation and Language · Computer Science 2025-07-15 Chenxi Huang , Shaotian Yan , Liang Xie , Binbin Lin , Sinan Fan , Yue Xin , Deng Cai , Chen Shen , Jieping Ye

Personalized Retrieval-Augmented Generation (RAG) relies on accurately selecting user-relevant documents. In practice, existing RAG approaches often suffer from high retrieval costs and overlook that collaborative signals from similar users…

Information Retrieval · Computer Science 2026-05-20 Gibson Nkhata , Uttamasha Anjally Oyshi , Quan Mai , Susan Gauch