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Although deep learning has revolutionized domains such as natural language processing and computer vision, its dependence on centralized datasets raises serious privacy concerns. Federated learning addresses this issue by enabling multiple…

Machine Learning · Computer Science 2025-11-19 Andreas Lutz , Gabriele Steidl , Karsten Müller , Wojciech Samek

We consider learning a multi-class classification model in the federated setting, where each user has access to the positive data associated with only a single class. As a result, during each federated learning round, the users need to…

Machine Learning · Computer Science 2020-04-23 Felix X. Yu , Ankit Singh Rawat , Aditya Krishna Menon , Sanjiv Kumar

Learning image representations on decentralized data can bring many benefits in cases where data cannot be aggregated across data silos. Softmax cross entropy loss is highly effective and commonly used for learning image representations.…

Machine Learning · Computer Science 2022-03-10 Sagar M. Waghmare , Hang Qi , Huizhong Chen , Mikhail Sirotenko , Tomer Meron

Federated Learning (FL) is a collaborative method for training models while preserving data privacy in decentralized settings. However, FL encounters challenges related to data heterogeneity, which can result in performance degradation. In…

Machine Learning · Computer Science 2023-11-23 Seongyoon Kim , Gihun Lee , Jaehoon Oh , Se-Young Yun

Federated learning (FL) is a promising technique that enables a large amount of edge computing devices to collaboratively train a global learning model. Due to privacy concerns, the raw data on devices could not be available for centralized…

Machine Learning · Computer Science 2020-11-24 Miao Yang , Akitanoshou Wong , Hongbin Zhu , Haifeng Wang , Hua Qian

Federated Learning (FL) is an emerging paradigm that enables multiple users to collaboratively train a robust model in a privacy-preserving manner without sharing their private data. Most existing approaches of FL only consider traditional…

Computer Vision and Pattern Recognition · Computer Science 2023-12-13 I-Jieh Liu , Ci-Siang Lin , Fu-En Yang , Yu-Chiang Frank Wang

The federated learning paradigm is wellsuited for the field of medical image analysis, as it can effectively cope with machine learning on isolated multicenter data while protecting the privacy of participating parties. However, current…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Zhekai Zhou , Guibo Luo , Mingzhi Chen , Zhenyu Weng , Yuesheng Zhu

Label skews, characterized by disparities in local label distribution across clients, pose a significant challenge in federated learning. As minority classes suffer from worse accuracy due to overfitting on local imbalanced data, prior…

Machine Learning · Computer Science 2024-12-17 Kuangpu Guo , Yuhe Ding , Jian Liang , Ran He , Zilei Wang , Tieniu Tan

Federated learning is a promising paradigm that utilizes distributed client resources while preserving data privacy. Most existing FL approaches assume clients possess labeled data, however, in real-world scenarios, client-side labels are…

Machine Learning · Computer Science 2025-11-20 Byoungjun Park , Pedro Porto Buarque de Gusmão , Dongjin Ji , Minhoe Kim

Heterogeneity arising from label distribution skew and data scarcity can cause inaccuracy and unfairness in intelligent communication applications that heavily rely on distributed computing. To deal with it, this paper proposes a novel…

Machine Learning · Computer Science 2025-09-18 Chenghao Huang , Xiaolu Chen , Yanru Zhang , Hao Wang

Federated learning (FL) enables multiple sites to collaboratively train powerful deep models without compromising data privacy and security. The statistical heterogeneity (e.g., non-IID data and domain shifts) is a primary obstacle in FL,…

Image and Video Processing · Electrical Eng. & Systems 2023-04-13 Li Lin , Jiewei Wu , Yixiang Liu , Kenneth K. Y. Wong , Xiaoying Tang

In privacy-preserving mobile network transmission scenarios with heterogeneous client data, personalized federated learning methods that decouple feature extractors and classifiers have demonstrated notable advantages in enhancing learning…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Ming Yang , Dongrun Li , Xin Wang , Feng Li , Lisheng Fan , Chunxiao Wang , Xiaoming Wu , Peng Cheng

Federated Semi-Supervised Learning (FedSSL) has gained rising attention from both academic and industrial researchers, due to its unique characteristics of co-training machine learning models with isolated yet unlabeled data. Most existing…

Machine Learning · Computer Science 2021-09-13 Zewei Long , Jiaqi Wang , Yaqing Wang , Houping Xiao , Fenglong Ma

Federated learning is an emerging paradigm for decentralized training of machine learning models on distributed clients, without revealing the data to the central server. Most existing works have focused on horizontal or vertical data…

Machine Learning · Computer Science 2024-04-16 Jaeyeon Jang , Diego Klabjan , Veena Mendiratta , Fanfei Meng

Medical image segmentation is challenging due to the diversity of medical images and the lack of labeled data, which motivates recent developments in federated semi-supervised learning (FSSL) to leverage a large amount of unlabeled data…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Zhipeng Deng , Zhe Xu , Tsuyoshi Isshiki , Yefeng Zheng

Federated Learning (FL) for face recognition aggregates locally optimized models from individual clients to construct a generalized face recognition model. However, previous studies present two major challenges: insufficient incorporation…

Computer Vision and Pattern Recognition · Computer Science 2024-07-24 Hansol Kim , Hoyeol Choi , Youngjun Kwak

Federated learning (FL) is a distributed learning method that offers medical institutes the prospect of collaboration in a global model while preserving the privacy of their patients. Although most medical centers conduct similar medical…

Machine Learning · Computer Science 2022-07-08 Yousef Yeganeh , Azade Farshad , Johann Boschmann , Richard Gaus , Maximilian Frantzen , Nassir Navab

Smartphones, wearables, and Internet of Things (IoT) devices produce a wealth of data that cannot be accumulated in a centralized repository for learning supervised models due to privacy, bandwidth limitations, and the prohibitive cost of…

Machine Learning · Computer Science 2020-07-28 Aaqib Saeed , Flora D. Salim , Tanir Ozcelebi , Johan Lukkien

Federated Learning aims at training a global model from multiple decentralized devices (i.e. clients) without exchanging their private local data. A key challenge is the handling of non-i.i.d. (independent identically distributed) data…

Machine Learning · Computer Science 2022-07-20 Xin Dong , Sai Qian Zhang , Ang Li , H. T. Kung

Federated Learning (FL) enables distributed Artificial Intelligence (AI) across cloud-edge environments by allowing collaborative model training without centralizing data. In cross-device deployments, FL systems face strict communication…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-03-11 Daniel M. Jimenez-Gutierrez , Giovanni Giunta , Mehrdad Hassanzadeh , Aris Anagnostopoulos , Ioannis Chatzigiannakis , Andrea Vitaletti