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Personalized subgraph Federated Learning (FL) is a task that customizes Graph Neural Networks (GNNs) to individual client needs, accommodating diverse data distributions. However, applying hypernetworks in FL, while aiming to facilitate…

Machine Learning · Computer Science 2024-06-03 Wenfei Liang , Yanan Zhao , Rui She , Yiming Li , Wee Peng Tay

Graph Federated Learning (GFL) enables distributed graph representation learning while protecting the privacy of graph data. However, GFL suffers from heterogeneity arising from diverse node features and structural topologies across…

Machine Learning · Computer Science 2026-01-30 Wentao Yu , Sheng Wan , Shuo Chen , Bo Han , Chen Gong

Standard Federated Learning (FL) techniques are limited to clients with identical network architectures. This restricts potential use-cases like cross-platform training or inter-organizational collaboration when both data privacy and…

Machine Learning · Computer Science 2022-01-24 Or Litany , Haggai Maron , David Acuna , Jan Kautz , Gal Chechik , Sanja Fidler

Recently, Federated Graph Learning (FGL) has attracted significant attention as a distributed framework based on graph neural networks, primarily due to its capability to break data silos. Existing FGL studies employ community split on the…

Machine Learning · Computer Science 2024-01-23 Xunkai Li , Zhengyu Wu , Wentao Zhang , Henan Sun , Rong-Hua Li , Guoren Wang

This paper focuses on addressing the practical yet challenging problem of model heterogeneity in federated learning, where clients possess models with different network structures. To track this problem, we propose a novel framework called…

Machine Learning · Computer Science 2023-10-30 Jiaqi Wang , Xingyi Yang , Suhan Cui , Liwei Che , Lingjuan Lyu , Dongkuan Xu , Fenglong Ma

Graph learning has a wide range of applications in many scenarios, which require more need for data privacy. Federated learning is an emerging distributed machine learning approach that leverages data from individual devices or data centers…

Machine Learning · Computer Science 2023-07-20 Peilin Liu , Yanni Tang , Mingyue Zhang , Wu Chen

Federated Learning (FL) has emerged as a prominent distributed machine learning framework that enables geographically discrete clients to train a global model collaboratively while preserving their privacy-sensitive data. However, due to…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-04-15 Shensheng Zheng , Wenhao Yuan , Xuehe Wang , Lingjie Duan

Federated learning (FL) is a privacy-preserving paradigm for collaboratively training a global model from decentralized clients. However, the performance of FL is hindered by non-independent and identically distributed (non-IID) data and…

Machine Learning · Computer Science 2024-03-08 Xinyu Zhang , Weiyu Sun , Ying Chen

Graphs have been widely used in data mining and machine learning due to their unique representation of real-world objects and their interactions. As graphs are getting bigger and bigger nowadays, it is common to see their subgraphs…

Machine Learning · Computer Science 2021-11-09 Ke Zhang , Carl Yang , Xiaoxiao Li , Lichao Sun , Siu Ming Yiu

Federated Graph Learning (FGL) has demonstrated the advantage of training a global Graph Neural Network (GNN) model across distributed clients using their local graph data. Unlike Euclidean data (\eg, images), graph data is composed of…

Machine Learning · Computer Science 2024-12-30 Xianjun Gao , Jianchun Liu , Hongli Xu , Shilong Wang , Liusheng Huang

Data heterogeneity across clients in federated learning (FL) settings is a widely acknowledged challenge. In response, personalized federated learning (PFL) emerged as a framework to curate local models for clients' tasks. In PFL, a common…

Machine Learning · Computer Science 2023-12-27 Yutong Dai , Zeyuan Chen , Junnan Li , Shelby Heinecke , Lichao Sun , Ran Xu

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

Graph data are ubiquitous in the real world. Graph learning (GL) tries to mine and analyze graph data so that valuable information can be discovered. Existing GL methods are designed for centralized scenarios. However, in practical…

Machine Learning · Computer Science 2021-05-10 Chuan Chen , Weibo Hu , Ziyue Xu , Zibin Zheng

Federated Learning is a novel framework that allows multiple devices or institutions to train a machine learning model collaboratively while preserving their data private. This decentralized approach is prone to suffer the consequences of…

Machine Learning · Computer Science 2021-11-29 Marcos F. Criado , Fernando E. Casado , Roberto Iglesias , Carlos V. Regueiro , Senén Barro

Federated learning is an emerging distributed machine learning framework aiming at protecting data privacy. Data heterogeneity is one of the core challenges in federated learning, which could severely degrade the convergence rate and…

Machine Learning · Statistics 2025-11-27 Feifei Wang , Huiyun Tang , Yang Li

Federated learning learns from scattered data by fusing collaborative models from local nodes. However, due to chaotic information distribution, the model fusion may suffer from structural misalignment with regard to unmatched parameters.…

Machine Learning · Computer Science 2022-03-22 Fuxun Yu , Weishan Zhang , Zhuwei Qin , Zirui Xu , Di Wang , Chenchen Liu , Zhi Tian , Xiang Chen

Federated Learning (FL) enables collaborative training across decentralized clients, but most methods assume aligned feature schemas, an assumption that rarely holds in tabular settings where clients observe only partially overlapping…

Machine Learning · Computer Science 2026-05-18 Imane Hocine , Chaimaa Medjadji , Sylvain Kubler , Gregoire Danoy , Yves Le Traon

Federated Graph Learning (FGL) aims to collaboratively and privately optimize graph models on divergent data for different tasks. A critical challenge in FGL is to enable effective yet efficient federated optimization against multifaceted…

Machine Learning · Computer Science 2024-11-05 Zhuoning Guo , Ruiqian Han , Hao Liu

Federated graph learning is a widely recognized technique that promotes collaborative training of graph neural networks (GNNs) by multi-client graphs.However, existing approaches heavily rely on the communication of model parameters or…

Machine Learning · Computer Science 2025-05-06 Hao Zhang , Xunkai Li , Yinlin Zhu , Lianglin Hu

Though successful, federated learning presents new challenges for machine learning, especially when the issue of data heterogeneity, also known as Non-IID data, arises. To cope with the statistical heterogeneity, previous works incorporated…

Machine Learning · Computer Science 2022-10-03 Mahdi Morafah , Saeed Vahidian , Chen Chen , Mubarak Shah , Bill Lin