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Federated learning allows clients to collaboratively learn statistical models while keeping their data local. Federated learning was originally used to train a unique global model to be served to all clients, but this approach might be…

Machine Learning · Computer Science 2022-06-20 Othmane Marfoq , Giovanni Neglia , Laetitia Kameni , Richard Vidal

Federated learning (FL) is an emerging machine learning paradigm that allows multiple parties to train a shared model collaboratively in a privacy-preserving manner. Existing horizontal FL methods generally assume that the FL server and…

Machine Learning · Computer Science 2023-08-02 Liping Yi , Gang Wang , Xiaoguang Liu , Zhuan Shi , Han Yu

Federated learning (FL) is a privacy-preserving collaboratively machine learning paradigm. Traditional FL requires all data owners (a.k.a. FL clients) to train the same local model. This design is not well-suited for scenarios involving…

Machine Learning · Computer Science 2024-04-22 Liping Yi , Han Yu , Zhuan Shi , Gang Wang , Xiaoguang Liu , Lizhen Cui , Xiaoxiao Li

Federated learning (FL) stands as a paradigmatic approach that facilitates model training across heterogeneous and diverse datasets originating from various data providers. However, conventional FLs fall short of achieving consistent…

Machine Learning · Computer Science 2024-08-28 Jiashi Gao , Xin Yao , Xuetao Wei

Federated learning (FL) is an appealing paradigm that allows a group of machines (a.k.a. clients) to learn collectively while keeping their data local. However, due to the heterogeneity between the clients' data distributions, the model…

Machine Learning · Computer Science 2024-10-01 Youssef Allouah , Abdellah El Mrini , Rachid Guerraoui , Nirupam Gupta , Rafael Pinot

Federated Learning (FL) enables collaborative training of distributed clients while protecting privacy. To enhance generalization capability in FL, prototype-based FL is in the spotlight, since shared global prototypes offer semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Huan Wang , Jun Shen , Haoran Li , Zhenyu Yang , Jun Yan , Ousman Manjang , Yanlong Zhai , Di Wu , Guansong Pang

Heterogeneous Federated Learning (HFL) has gained significant attention for its capacity to handle both model and data heterogeneity across clients. Prototype-based HFL methods emerge as a promising solution to address statistical and model…

Machine Learning · Computer Science 2025-12-22 Fatema Siddika , Md Anwar Hossen , Wensheng Zhang , Anuj Sharma , Juan Pablo Muñoz , Ali Jannesari

Federated learning offers a paradigm to the challenge of preserving privacy in distributed machine learning. However, datasets distributed across each client in the real world are inevitably heterogeneous, and if the datasets can be…

Machine Learning · Computer Science 2024-09-19 Xiuhua Lu , Peng Li , Xuefeng Jiang

Federated learning (FL) allows multiple clients to collectively train a high-performance global model without sharing their private data. However, the key challenge in federated learning is that the clients have significant statistical…

Machine Learning · Computer Science 2022-03-23 Liang Gao , Huazhu Fu , Li Li , Yingwen Chen , Ming Xu , Cheng-Zhong Xu

Federated learning allows multiple clients to collaboratively train a model without exchanging their data, thus preserving data privacy. Unfortunately, it suffers significant performance degradation due to heterogeneous data at clients.…

Machine Learning · Computer Science 2023-10-19 Tailin Zhou , Jun Zhang , Danny H. K. Tsang

Federated learning (FL) takes a first step towards privacy-preserving machine learning by training models while keeping client data local. Models trained using FL may still leak private client information through model updates during…

Machine Learning · Computer Science 2023-01-18 Nasser Aldaghri , Hessam Mahdavifar , Ahmad Beirami

Training ML models which are fair across different demographic groups is of critical importance due to the increased integration of ML in crucial decision-making scenarios such as healthcare and recruitment. Federated learning has been…

Machine Learning · Computer Science 2022-11-28 Yahya H. Ezzeldin , Shen Yan , Chaoyang He , Emilio Ferrara , Salman Avestimehr

Federated learning (FL) is a distributed machine learning technique in which multiple clients cooperate to train a shared model without exchanging their raw data. However, heterogeneity of data distribution among clients usually leads to…

Machine Learning · Computer Science 2023-03-23 Yu Qiao , Seong-Bae Park , Sun Moo Kang , Choong Seon Hong

Federated learning (FL) promises to enable collaborative machine learning across healthcare sites whilst preserving data privacy. Practical deployment remains limited by statistical heterogeneity arising from differences in patient…

Recently, Heterogeneous Federated Learning (HtFL) has attracted attention due to its ability to support heterogeneous models and data. To reduce the high communication cost of transmitting model parameters, a major challenge in HtFL,…

Machine Learning · Computer Science 2024-01-09 Jianqing Zhang , Yang Liu , Yang Hua , Jian Cao

Numerous research studies in the field of federated learning (FL) have attempted to use personalization to address the heterogeneity among clients, one of FL's most crucial and challenging problems. However, existing works predominantly…

Machine Learning · Computer Science 2023-04-12 Anda Cheng , Zhen Wang , Yaliang Li , Jian Cheng

Federated learning enables collaborative model training without sharing raw data, but its performance can degrade substantially under heterogeneous client data distributions. A single global model often cannot satisfy diverse client…

Machine Learning · Computer Science 2026-05-27 Yunseok Kang , Jaeyoung Song

Recent advances in Federated Learning (FL) have brought large-scale collaborative machine learning opportunities for massively distributed clients with performance and data privacy guarantees. However, most current works focus on the…

Machine Learning · Computer Science 2023-04-12 Yuxin Shi , Han Yu , Cyril Leung

The issue of fairness in recommendation is becoming increasingly essential as Recommender Systems touch and influence more and more people in their daily lives. In fairness-aware recommendation, most of the existing algorithmic approaches…

Information Retrieval · Computer Science 2022-01-04 Yingqiang Ge , Xiaoting Zhao , Lucia Yu , Saurabh Paul , Diane Hu , Chu-Cheng Hsieh , Yongfeng Zhang

Federated learning (FL) supports training models on geographically distributed devices. However, traditional FL systems adopt a centralized synchronous strategy, putting high communication pressure and model generalization challenge.…

Machine Learning · Computer Science 2021-11-17 Jing Cao , Zirui Lian , Weihong Liu , Zongwei Zhu , Cheng Ji