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Federated learning has gained significant attention due to its groundbreaking ability to enable distributed learning while maintaining privacy constraints. However, as a consequence of data heterogeneity among decentralized devices, it…

Machine Learning · Computer Science 2024-01-02 Hangyu Zhu , Yuxiang Fan , Zhenping Xie

We propose clustered federated multitask learning to address statistical challenges in non-independent and identically distributed data across clients. Our approach tackles complexities in hierarchical wireless networks by clustering…

Networking and Internet Architecture · Computer Science 2024-07-15 Moqbel Hamood , Abdullatif Albaseer , Mohamed Abdallah , Ala Al-Fuqaha , Amr Mohamed

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

Federated learning (FL) is a powerful distributed machine learning framework where a server aggregates models trained by different clients without accessing their private data. Hierarchical FL, with a client-edge-cloud aggregation…

Machine Learning · Computer Science 2023-01-10 Lumin Liu , Jun Zhang , Shenghui Song , Khaled B. Letaief

Heterogeneity across clients in federated learning (FL) usually hinders the optimization convergence and generalization performance when the aggregation of clients' knowledge occurs in the gradient space. For example, clients may differ in…

Machine Learning · Computer Science 2022-03-08 Yue Tan , Guodong Long , Lu Liu , Tianyi Zhou , Qinghua Lu , Jing Jiang , Chengqi Zhang

Federated learning (FL) is a rapidly growing privacy-preserving collaborative machine learning paradigm. In practical FL applications, local data from each data silo reflect local usage patterns. Therefore, there exists heterogeneity of…

Machine Learning · Computer Science 2022-02-01 Shenglai Zeng , Zonghang Li , Hongfang Yu , Yihong He , Zenglin Xu , Dusit Niyato , Han Yu

Under the federated learning paradigm, a set of nodes can cooperatively train a machine learning model with the help of a centralized server. Such a server is also tasked with assigning a weight to the information received from each node,…

Networking and Internet Architecture · Computer Science 2021-02-04 Francesco Malandrino , Carla Fabiana Chiasserini

The uneven distribution of local data across different edge devices (clients) results in slow model training and accuracy reduction in federated learning. Naive federated learning (FL) strategy and most alternative solutions attempted to…

Federated learning enables edge devices to collaboratively train a global model while maintaining data privacy by keeping data localized. However, the Non-IID nature of data distribution across devices often hinders model convergence and…

Machine Learning · Computer Science 2025-11-25 Youngjoon Lee , Jinu Gong , Joonhyuk Kang

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

Statistical heterogeneity across clients in a Federated Learning (FL) system increases the algorithm convergence time and reduces the generalization performance, resulting in a large communication overhead in return for a poor model. To…

Machine Learning · Computer Science 2023-04-26 Mohamad Mestoukirdi , Matteo Zecchin , David Gesbert , Qianrui Li

Federated Learning (FL) has emerged as a powerful paradigm for leveraging diverse datasets from multiple sources while preserving data privacy by avoiding centralized storage. However, many existing approaches fail to account for the…

Machine Learning · Computer Science 2025-06-23 Liangyan Li , Yangyi Liu , Yimo Ning , Stefano Rini , Jun Chen

Federated learning (FL) is a decentralized machine learning paradigm in which multiple clients collaboratively train a shared model without sharing their local private data. However, real-world applications of FL frequently encounter…

Machine Learning · Computer Science 2025-08-14 Zhekai Zhou , Shudong Liu , Zhaokun Zhou , Yang Liu , Qiang Yang , Yuesheng Zhu , Guibo Luo

Federated learning is a promising framework to train neural networks with widely distributed data. However, performance degrades heavily with heterogeneously distributed data. Recent work has shown this is due to the final layer of the…

Machine Learning · Computer Science 2024-03-06 Ha Min Son , Moon-Hyun Kim , Tai-Myoung Chung , Chao Huang , Xin Liu

Federated learning enables distributed clients to collaborate on training while storing their data locally to protect client privacy. However, due to the heterogeneity of data, models, and devices, the final global model may need to perform…

Machine Learning · Computer Science 2024-06-25 Wolong Xing , Zhenkui Shi , Hongyan Peng , Xiantao Hu , Xianxian Li

Federated Learning (FL) has emerged as a promising solution in Edge Computing (EC) environments to process the proliferation of data generated by edge devices. By collaboratively optimizing the global machine learning models on distributed…

Machine Learning · Computer Science 2024-02-14 Yongzhe Jia , Xuyun Zhang , Amin Beheshti , Wanchun Dou

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) has emerged as a promising paradigm for privacy-preserving collaborative learning, yet data heterogeneity remains a critical challenge. While existing methods achieve progress in addressing data heterogeneity for…

Machine Learning · Computer Science 2025-08-19 Yuhao Zhou , Jindi Lv , Yuxin Tian , Dan Si , Qing Ye , Jiancheng Lv

Federated Learning (FL) is developed to learn a single global model across the decentralized data, while is susceptible when realizing client-specific personalization in the presence of statistical heterogeneity. However, studies focus on…

Machine Learning · Computer Science 2022-04-27 Changxing Jing , Yan Huang , Yihong Zhuang , Liyan Sun , Yue Huang , Zhenlong Xiao , Xinghao Ding

This paper investigates federated learning in a wireless communication system, where random device selection is employed with non-independent and identically distributed (non-IID) data. The analysis indicates that while training deep…

Signal Processing · Electrical Eng. & Systems 2024-05-28 Kaidi Wang , Zhiguo Ding , Daniel K. C. So , Zhi Ding