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Federated Learning (FL) facilitates collaborative model training across decentralized clients while preserving data privacy by avoiding raw data exchange. Despite its potential, FL performance is often compromised by data heterogeneity…

Machine Learning · Computer Science 2026-05-12 Qijun Hou , Yuchen Shi , Pingyi Fan , Khaled B. Letaief

Federated learning is essential for enabling collaborative model training across decentralized data sources while preserving data privacy and security. This approach mitigates the risks associated with centralized data collection and…

Machine Learning · Computer Science 2025-03-14 Daoyuan Li , Zuyuan Yang , Shengli Xie

Federated learning has emerged as an important paradigm for training machine learning models in different domains. For graph-level tasks such as graph classification, graphs can also be regarded as a special type of data samples, which can…

Machine Learning · Computer Science 2021-11-09 Han Xie , Jing Ma , Li Xiong , Carl Yang

Federated Learning (FL) is a distributed machine learning paradigm that enables collaboration among multiple clients to train a shared model without sharing raw data. However, a major challenge in FL is the label imbalance, where clients…

Machine Learning · Computer Science 2024-09-24 Ziyu Yao

Federated Learning (FL) enables a group of clients to collaboratively train a model without sharing individual data, but its performance drops when client data are heterogeneous. Clustered FL tackles this by grouping similar clients.…

Machine Learning · Computer Science 2026-03-02 Anik Pramanik , Murat Kantarcioglu , Vincent Oria , Shantanu Sharma

Federated learning allows clients to collaboratively train models on datasets that are acquired in different locations and that cannot be exchanged because of their size or regulations. Such collected data is increasingly non-independent…

Machine Learning · Computer Science 2022-04-26 Federico Lucchetti , Jérémie Decouchant , Maria Fernandes , Lydia Y. Chen , Marcus Völp

In the era of big data applications, Federated Graph Learning (FGL) has emerged as a prominent solution that reconcile the tradeoff between optimizing the collective intelligence between decentralized datasets holders and preserving…

Machine Learning · Computer Science 2025-07-23 Zhengyu Wu , Xunkai Li , Yinlin Zhu , Zekai Chen , Guochen Yan , Yanyu Yan , Hao Zhang , Yuming Ai , Xinmo Jin , Rong-Hua Li , Guoren Wang

Federated learning achieves joint training of deep models by connecting decentralized data sources, which can significantly mitigate the risk of privacy leakage. However, in a more general case, the distributions of labels among clients are…

Machine Learning · Computer Science 2022-12-20 Tao Sheng , Chengchao Shen , Yuan Liu , Yeyu Ou , Zhe Qu , Jianxin Wang

Federated Learning (FL) is a decentralized learning paradigm, in which multiple clients collaboratively train deep learning models without centralizing their local data, and hence preserve data privacy. Real-world applications usually…

Machine Learning · Computer Science 2023-08-23 Haokun Chen , Ahmed Frikha , Denis Krompass , Jindong Gu , Volker Tresp

Federated graph learning is an emerging field with significant practical challenges. While algorithms have been proposed to improve the accuracy of training graph neural networks, such as node classification on federated graphs, the system…

Machine Learning · Computer Science 2025-09-04 Yuhang Yao , Yuan Li , Xinyi Fan , Junhao Li , Kay Liu , Weizhao Jin , Yu Yang , Srivatsan Ravi , Philip S. Yu , Carlee Joe-Wong

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

Graphs are widely used to model relational data. As graphs are getting larger and larger in real-world scenarios, there is a trend to store and compute subgraphs in multiple local systems. For example, recently proposed \emph{subgraph…

Machine Learning · Computer Science 2024-01-30 Zaixi Zhang , Qingyong Hu , Yang Yu , Weibo Gao , Qi Liu

Federated Graph Learning (FGL) has emerged as a powerful paradigm for decentralized training of graph neural networks while preserving data privacy. However, existing FGL methods are predominantly designed for static graphs and rely on…

Machine Learning · Computer Science 2026-04-01 Yuxuan Liu , Wenchao Xu , Haozhao Wang , Zhiming He , Zhaofeng Shi , Chongyang Xu , Peichao Wang , Boyuan Zhang

Federated Graph Learning (FGL) is a distributed machine learning paradigm based on graph neural networks, enabling secure and collaborative modeling of local graph data among clients. However, label noise can degrade the global model's…

Machine Learning · Computer Science 2024-12-02 De Li , Haodong Qian , Qiyu Li , Zhou Tan , Zemin Gan , Jinyan Wang , Xianxian Li

Personalized Federated Graph Learning (pFGL) facilitates the decentralized training of Graph Neural Networks (GNNs) without compromising privacy while accommodating personalized requirements for non-IID participants. In cross-domain…

Machine Learning · Computer Science 2024-10-29 Zihan Tan , Guancheng Wan , Wenke Huang , Mang Ye

One of many impediments to applying graph neural networks (GNNs) to large-scale real-world graph data is the challenge of centralized training, which requires aggregating data from different organizations, raising privacy concerns.…

Machine Learning · Computer Science 2025-12-19 Ruiyu Li , Peige Zhao , Guangxia Li , Pengcheng Wu , Xingyu Gao , Zhiqiang Xu

Federated Graph Learning (FGL) is a distributed learning paradigm that enables collaborative training over large-scale subgraphs located on multiple local systems. However, most existing FGL approaches rely on synchronous communication,…

Machine Learning · Computer Science 2025-08-06 Zhongzheng Yuan , Lianshuai Guo , Xunkai Li , Yinlin Zhu , Wenyu Wang , Meixia Qu

Federated graph learning collaboratively learns a global graph neural network with distributed graphs, where the non-independent and identically distributed property is one of the major challenges. Most relative arts focus on traditional…

Machine Learning · Computer Science 2024-07-02 Wenke Huang , Guancheng Wan , Mang Ye , Bo Du

Graph neural networks (GNN) have been successful in many fields, and derived various researches and applications in real industries. However, in some privacy sensitive scenarios (like finance, healthcare), training a GNN model centrally…

Machine Learning · Computer Science 2021-05-25 Huanding Zhang , Tao Shen , Fei Wu , Mingyang Yin , Hongxia Yang , Chao Wu

Federated Learning (FL) on graphs enables collaborative model training to enhance performance without compromising the privacy of each client. However, existing methods often overlook the mutable nature of graph data, which frequently…

Machine Learning · Computer Science 2025-03-07 Sungwon Kim , Yoonho Lee , Yunhak Oh , Namkyeong Lee , Sukwon Yun , Junseok Lee , Sein Kim , Carl Yang , Chanyoung Park