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Federated Learning (FL) marks a transformative approach to distributed model training by combining locally optimized models from various clients into a unified global model. While FL preserves data privacy by eliminating centralized…

Machine Learning · Computer Science 2026-01-08 Pranab Sahoo , Ashutosh Tripathi , Sriparna Saha , Samrat Mondal

The emerging paradigm of federated learning strives to enable collaborative training of machine learning models on the network edge without centrally aggregating raw data and hence, improving data privacy. This sharply deviates from…

Machine Learning · Computer Science 2019-12-03 Manoj Ghuhan Arivazhagan , Vinay Aggarwal , Aaditya Kumar Singh , Sunav Choudhary

Federated Learning (FL) has emerged as a means of distributed learning using local data stored at clients with a coordinating server. Recent studies showed that FL can suffer from poor performance and slower convergence when training data…

Machine Learning · Computer Science 2023-08-17 Van Sy Mai , Richard J. La , Tao Zhang

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) has shown great potential as a privacy-preserving solution to learning from decentralized data that are only accessible to end devices (i.e., clients). In many scenarios, however, a large proportion of the clients…

Machine Learning · Computer Science 2022-01-31 Wentai Wu , Ligang He , Weiwei Lin , Carsten Maple

Collaborative fairness is a crucial challenge in federated learning. However, existing approaches often overlook a practical yet complex form of heterogeneity: imbalanced covariate shift. We provide a theoretical analysis of this setting,…

Machine Learning · Computer Science 2025-07-14 Tianrun Yu , Jiaqi Wang , Haoyu Wang , Mingquan Lin , Han Liu , Nelson S. Yee , Fenglong Ma

Federated learning (FL) is able to manage edge devices to cooperatively train a model while maintaining the training data local and private. One common assumption in FL is that all edge devices share the same machine learning model in…

Machine Learning · Computer Science 2022-07-07 Chan Yun Hin , Ngai Edith

Federated learning (FL) enables leveraging distributed private data for model training in a privacy-preserving way. However, data heterogeneity significantly limits the performance of current FL methods. In this paper, we propose a novel FL…

Machine Learning · Computer Science 2023-12-12 Rui Ye , Xinyu Zhu , Jingyi Chai , Siheng Chen , Yanfeng Wang

Data heterogeneity presents significant challenges for federated learning (FL). Recently, dataset distillation techniques have been introduced, and performed at the client level, to attempt to mitigate some of these challenges. In this…

Machine Learning · Computer Science 2023-12-05 Yuqi Jia , Saeed Vahidian , Jingwei Sun , Jianyi Zhang , Vyacheslav Kungurtsev , Neil Zhenqiang Gong , Yiran Chen

Federated learning (FL) is an emerging technique used to collaboratively train a global machine learning model while keeping the data localized on the user devices. The main obstacle to FL's practical implementation is the Non-Independent…

Machine Learning · Computer Science 2022-08-01 Hiep Nguyen , Lam Phan , Harikrishna Warrier , Yogesh Gupta

We consider a federated learning (FL) system consisting of multiple clients and a server, where the clients aim to collaboratively learn a common decision model from their distributed data. Unlike the conventional FL framework that assumes…

Machine Learning · Computer Science 2023-05-10 Kun Jin , Tongxin Yin , Zhongzhu Chen , Zeyu Sun , Xueru Zhang , Yang Liu , Mingyan Liu

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

This paper addresses the challenge of mitigating data heterogeneity among clients within a Federated Learning (FL) framework. The model-drift issue, arising from the noniid nature of client data, often results in suboptimal personalization…

Machine Learning · Computer Science 2024-02-19 Kawa Atapour , S. Jamal Seyedmohammadi , Jamshid Abouei , Arash Mohammadi , Konstantinos N. Plataniotis

Federated learning (FL) offers a promising framework for collaborative digital pathology by enabling model training across institutions. However, real-world deployments face heterogeneity arising from diverse multiple instance learning…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Luru Jing , Cong Cong , Yanyuan Chen , Yongzhi Cao

Federated Learning (FL) enables collaborative model training without centralizing data. However, real-world deployments must simultaneously address statistical heterogeneity across client data (non-IID), system heterogeneity in device…

Machine Learning · Computer Science 2026-05-21 Chaimaa Medjadji , Sylvain Kubler , Yves Le Traon , Guilain Leduc , Sadi Alawadi , Feras M. Awaysheh

Federated Learning (FL) is gaining popularity as a distributed learning framework that only shares model parameters or gradient updates and keeps private data locally. However, FL is at risk of privacy leakage caused by privacy inference…

Machine Learning · Computer Science 2024-09-17 Kangyang Luo , Shuai Wang , Xiang Li , Yunshi Lan , Ming Gao , Jinlong Shu

Many application scenarios call for training a machine learning model among multiple participants. Federated learning (FL) was proposed to enable joint training of a deep learning model using the local data in each party without revealing…

Machine Learning · Computer Science 2021-02-12 Kai-Fung Chu , Lintao Zhang

Federated learning (FL) is a distributed training technology that enhances data privacy in mobile edge networks by allowing data owners to collaborate without transmitting raw data to the edge server. However, data heterogeneity and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Yu Qiao , Apurba Adhikary , Kitae Kim , Eui-Nam Huh , Zhu Han , Choong Seon Hong

Federated learning (FL) has shown success in collaboratively training a model among decentralized data resources without directly sharing privacy-sensitive training data. Despite recent advances, non-IID (non-independent and identically…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Cheng-Chang Tsai , Kai-Wen Cheng , Chun-Shien Lu

Federated learning (FL) provides a privacy-preserving solution for distributed machine learning tasks. One challenging problem that severely damages the performance of FL models is the co-occurrence of data heterogeneity and long-tail…

Machine Learning · Computer Science 2022-04-29 Xinyi Shang , Yang Lu , Gang Huang , Hanzi Wang