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Federated Learning (FL) trains deep models across edge devices without centralizing raw data, preserving user privacy. However, client heterogeneity slows down convergence and limits global model accuracy. Clustered FL (CFL) mitigates this…

Machine Learning · Computer Science 2026-02-10 Minghao Li , Dmitrii Avdiukhin , Rana Shahout , Nikita Ivkin , Vladimir Braverman , Minlan Yu

Federated learning (FL) allows edge devices to collaboratively train models without sharing local data. As FL gains popularity, clients may need to train multiple unrelated FL models, but communication constraints limit their ability to…

Machine Learning · Computer Science 2025-04-23 Haoran Zhang , Zejun Gong , Zekai Li , Marie Siew , Carlee Joe-Wong , Rachid El-Azouzi

As a promising paradigm federated Learning (FL) is widely used in privacy-preserving machine learning, which allows distributed devices to collaboratively train a model while avoiding data transmission among clients. Despite its immense…

Machine Learning · Computer Science 2023-08-29 Jinglong Shen , Xiucheng Wang , Nan Cheng , Longfei Ma , Conghao Zhou , Yuan Zhang

Federated learning (FL) is increasingly adopted in domains like healthcare, where data privacy is paramount. A fundamental challenge in these systems is statistical heterogeneity-the fact that data distributions vary significantly across…

Machine Learning · Computer Science 2026-02-12 Zijian Wang , Xiaofei Zhang , Xin Zhang , Yukun Liu , Qiong Zhang

Federated Learning (FL) enables a distributed client-server architecture where multiple clients collaboratively train a global Machine Learning (ML) model without sharing sensitive local data. However, FL often results in lower accuracy…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-02-25 Nihal Balivada , Shrey Gupta , Shashank Shreedhar Bhatt , Suyash Gupta

Federated learning enables different parties to collaboratively build a global model under the orchestration of a server while keeping the training data on clients' devices. However, performance is affected when clients have heterogeneous…

Machine Learning · Computer Science 2022-06-20 Fabiola Espinoza Castellon , Aurelien Mayoue , Jacques-Henri Sublemontier , Cedric Gouy-Pailler

Federated Learning (FL) has been considered as an appealing framework to tackle data privacy issues of mobile devices compared to conventional Machine Learning (ML). Using Edge Servers (ESs) as intermediaries to perform model aggregation in…

Machine Learning · Computer Science 2021-12-06 Zhe Qu , Rui Duan , Lixing Chen , Jie Xu , Zhuo Lu , Yao Liu

Federated Learning (FL) enables mobile edge devices, functioning as clients, to collaboratively train a decentralized model while ensuring local data privacy. However, the efficiency of FL in wireless networks is limited not only by…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-01 Yanbing Yang , Huiling Zhu , Wenchi Cheng , Jingqing Wang , Changrun Chen , Jiangzhou Wang

Federated Learning (FL) enables learning a shared model across many clients without violating the privacy requirements. One of the key attributes in FL is the heterogeneity that exists in both resource and data due to the differences in…

Machine Learning · Computer Science 2020-01-28 Zheng Chai , Ahsan Ali , Syed Zawad , Stacey Truex , Ali Anwar , Nathalie Baracaldo , Yi Zhou , Heiko Ludwig , Feng Yan , Yue Cheng

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

Federated learning provides the ability to learn over heterogeneous user data in a distributed manner while preserving user privacy. However, its current client selection technique is a source of bias as it discriminates against slow…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-09-28 Ammar Tahir , Yongzhou Chen , Prashanti Nilayam

Federated Learning (FL) is a distributed learning paradigm where clients collaboratively train a model while keeping their own data private. With an increasing scale of clients and models, FL encounters two key challenges, client drift due…

Machine Learning · Computer Science 2025-01-20 Jianhui Sun , Xidong Wu , Heng Huang , Aidong Zhang

The key premise of federated learning (FL) is to train ML models across a diverse set of data-owners (clients), without exchanging local data. An overarching challenge to this date is client heterogeneity, which may arise not only from…

Federated Learning (FL) allows several clients to construct a common global machine-learning model without having to share their data. FL, however, faces the challenge of statistical heterogeneity between the client's data, which degrades…

Machine Learning · Computer Science 2024-01-26 Zahra Taghiyarrenani , Abdallah Alabdallah , Slawomir Nowaczyk , Sepideh Pashami

High-altitude platform stations (HAPS) enable large-scale federated learning (FL) in non-terrestrial networks (NTN) by providing wide-area coverage and predominantly line-of-sight (LoS) connectivity to many ground users. However, practical…

Networking and Internet Architecture · Computer Science 2026-04-03 Amin Farajzadeh , Animesh Yadav , Halim Yanikomeroglu

Federated Learning (FL) is a promising technology that enables multiple actors to build a joint model without sharing their raw data. The distributed nature makes FL vulnerable to various poisoning attacks, including model poisoning attacks…

Cryptography and Security · Computer Science 2023-11-13 Yanli Li , Huaming Chen , Wei Bao , Zhengmeng Xu , Dong Yuan

Federated Learning (FL) enables edge devices to collaboratively learn a global model, but it may not perform well when clients have high data heterogeneity. In this paper, we propose a dynamic clustering algorithm for personalized federated…

Machine Learning · Computer Science 2025-08-05 Heting Liu , Junzhe Huang , Fang He , Guohong Cao

Federated learning (FL) allows multiple clients cooperatively train models without disclosing local data. However, the existing works fail to address all these practical concerns in FL: limited communication resources, dynamic network…

Distributed, Parallel, and Cluster Computing · Computer Science 2022-12-20 Zhida Jiang , Yang Xu , Hongli Xu , Zhiyuan Wang , Chen Qian

This paper proposes a cooperative mechanism for mitigating the performance degradation due to non-independent-and-identically-distributed (non-IID) data in collaborative machine learning (ML), namely federated learning (FL), which trains an…

Machine Learning · Computer Science 2020-03-06 Naoya Yoshida , Takayuki Nishio , Masahiro Morikura , Koji Yamamoto , Ryo Yonetani

This work addresses the problem of optimizing communications between server and clients in federated learning (FL). Current sampling approaches in FL are either biased, or non optimal in terms of server-clients communications and training…

Machine Learning · Computer Science 2021-05-24 Yann Fraboni , Richard Vidal , Laetitia Kameni , Marco Lorenzi