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In diverse fields ranging from finance to omics, it is increasingly common that data is distributed and with multiple individual sources (referred to as ``clients'' in some studies). Integrating raw data, although powerful, is often not…

Methodology · Statistics 2022-11-08 Yuanxing Chen , Qingzhao Zhang , Shuangge Ma , Kuangnan Fang

Federated Learning (FL) enables decentralized model training across clients without sharing raw data, but its performance degrades under real-world data heterogeneity. Existing methods often fail to address distribution shift across clients…

Machine Learning · Computer Science 2026-02-10 Mohan Li , Dario Fenoglio , Martin Gjoreski , Marc Langheinrich

Statistical heterogeneity of data present at client devices in a federated learning (FL) system renders the training of a global model in such systems difficult. Particularly challenging are the settings where due to communication resource…

Machine Learning · Computer Science 2024-10-07 Huancheng Chen , Haris Vikalo

Federated Learning (FL) has recently emerged as a possible way to tackle the domain shift in real-world Semantic Segmentation (SS) without compromising the private nature of the collected data. However, most of the existing works on FL…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Donald Shenaj , Eros Fanì , Marco Toldo , Debora Caldarola , Antonio Tavera , Umberto Michieli , Marco Ciccone , Pietro Zanuttigh , Barbara Caputo

Federated Learning (FL) has emerged to allow multiple clients to collaboratively train machine learning models on their private data at the network edge. However, training and deploying large-scale models on resource-constrained devices is…

Machine Learning · Computer Science 2024-08-05 Yang Xu , Yunming Liao , Hongli Xu , Zhipeng Sun , Liusheng Huang , Chunming Qiao

We present a federated learning approach for learning a client adaptable, robust model when data is non-identically and non-independently distributed (non-IID) across clients. By simulating heterogeneous clients, we show that adding learned…

Machine Learning · Computer Science 2020-07-10 Laura Rieger , Rasmus M. Th. Høegh , Lars K. Hansen

Federated Learning (FL) is a distributed machine learning paradigm that achieves a globally robust model through decentralized computation and periodic model synthesis, primarily focusing on the global model's accuracy over aggregated…

Machine Learning · Computer Science 2024-11-27 Han Liang , Ziwei Zhan , Weijie Liu , Xiaoxi Zhang , Chee Wei Tan , Xu Chen

Federated Learning (FL) presents an innovative approach to privacy-preserving distributed machine learning and enables efficient crowd intelligence on a large scale. However, a significant challenge arises when coordinating FL with crowd…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-09-06 Yuhao Zhou , Minjia Shi , Yuxin Tian , Yuanxi Li , Qing Ye , Jiancheng Lv

Federated learning is a decentralized learning paradigm wherein a central server trains a global model iteratively by utilizing clients who possess a certain amount of private datasets. The challenge lies in the fact that the client side…

Machine Learning · Computer Science 2023-12-25 Shaohan Sha , YaFeng Sun

Federated Learning (FL) is a privacy-preserving machine learning framework facilitating collaborative training across distributed clients. However, its performance is often compromised by data heterogeneity among participants, which can…

Machine Learning · Computer Science 2026-02-16 Ziru Niu , Hai Dong , A. K. Qin

Clustered federated learning (FL) has been shown to produce promising results by grouping clients into clusters. This is especially effective in scenarios where separate groups of clients have significant differences in the distributions of…

Machine Learning · Computer Science 2022-09-22 Saeed Vahidian , Mahdi Morafah , Weijia Wang , Vyacheslav Kungurtsev , Chen Chen , Mubarak Shah , Bill Lin

Federated Learning (FL) enables distributed learning across multiple clients without sharing raw data. When statistical heterogeneity across clients is severe, Clustered Federated Learning (CFL) can improve performance by grouping similar…

Machine Learning · Computer Science 2026-01-15 Sota Sugawara , Yuji Kawamata , Akihiro Toyoda , Tomoru Nakayama , Yukihiko Okada

Federated learning has recently gained popularity as a framework for distributed clients to collaboratively train a machine learning model using local data. While traditional federated learning relies on a central server for model…

Machine Learning · Computer Science 2025-09-03 I-Cheng Lin , Osman Yagan , Carlee Joe-Wong

Federated learning (FL) has recently emerged as a popular privacy-preserving collaborative learning paradigm. However, it suffers from the non-independent and identically distributed (non-IID) data among clients. In this paper, we propose a…

Machine Learning · Computer Science 2022-06-14 Zijian Li , Jiawei Shao , Yuyi Mao , Jessie Hui Wang , Jun Zhang

Federated learning (FL) enables massive distributed Information and Communication Technology (ICT) devices to learn a global consensus model without any participants revealing their own data to the central server. However, the practicality,…

Machine Learning · Computer Science 2020-03-31 Zhikun Chen , Daofeng Li , Ming Zhao , Sihai Zhang , Jinkang Zhu

Classical federated learning approaches incur significant performance degradation in the presence of non-IID client data. A possible direction to address this issue is forming clusters of clients with roughly IID data. Most solutions…

Machine Learning · Computer Science 2021-10-11 Hadi Jamali-Rad , Mohammad Abdizadeh , Anuj Singh

Existing incentive solutions for traditional Federated Learning (FL) focus on individual contributions to a single global objective, neglecting the nuances of clustered personalization with multiple cluster-level models and the non-monetary…

Machine Learning · Computer Science 2024-10-14 Ahmad Faraz Khan , Xinran Wang , Qi Le , Zain ul Abdeen , Azal Ahmad Khan , Haider Ali , Ming Jin , Jie Ding , Ali R. Butt , Ali Anwar

Federated learning (FL) is a distributed machine learning approach involving multiple clients collaboratively training a shared model. Such a system has the advantage of more training data from multiple clients, but data can be…

Machine Learning · Computer Science 2021-08-24 Sone Kyaw Pye , Han Yu

Federated learning (FL) facilitates a privacy-preserving neural network training paradigm through collaboration between edge clients and a central server. One significant challenge is that the distributed data is not independently and…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Yu Qiao , Huy Q. Le , Mengchun Zhang , Apurba Adhikary , Chaoning Zhang , Choong Seon Hong

Federated Learning (FL) enables a group of clients to collaboratively train a model without sharing individual data, but its performance drops when client data are heterogeneous. Clustered FL tackles this by grouping similar clients.…

Machine Learning · Computer Science 2026-03-02 Anik Pramanik , Murat Kantarcioglu , Vincent Oria , Shantanu Sharma