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Graph neural networks (GNNs) achieve strong performance on relational data, but real-world graphs are often distributed across organizations that cannot share raw data due to privacy and policy constraints. Existing federated GNN methods…

Machine Learning · Computer Science 2026-05-27 Zhishuai Guo , Wenhan Wu , Chen Chen , Lei Zhang , Olivera Kotevska , Ravi K Madduri

Personal interaction data can be effectively modeled as individual graphs for each user in recommender systems.Graph Neural Networks (GNNs)-based recommendation techniques have become extremely popular since they can capture high-order…

Machine Learning · Computer Science 2024-12-31 Haiyan Wang , Ye Yuan

The increasing demand for deep learning-based foundation models has highlighted the importance of efficient data retrieval mechanisms. Neural graph databases (NGDBs) offer a compelling solution, leveraging neural spaces to store and query…

Machine Learning · Computer Science 2025-07-09 Qi Hu , Weifeng Jiang , Haoran Li , Zihao Wang , Jiaxin Bai , Qianren Mao , Yangqiu Song , Lixin Fan , Jianxin Li

Graph machine learning has gained great attention in both academia and industry recently. Most of the graph machine learning models, such as Graph Neural Networks (GNNs), are trained over massive graph data. However, in many real-world…

Machine Learning · Computer Science 2022-10-19 Xingbo Fu , Binchi Zhang , Yushun Dong , Chen Chen , Jundong Li

Federated graph learning (FGL) is a promising distributed training paradigm for graph neural networks across multiple local systems without direct data sharing. This approach inherently involves large-scale distributed graph processing,…

Machine Learning · Computer Science 2025-01-22 Xunkai Li , Yinlin Zhu , Boyang Pang , Guochen Yan , Yeyu Yan , Zening Li , Zhengyu Wu , Wentao Zhang , Rong-Hua Li , Guoren Wang

Federated recommendation systems (FedRecs) have gained significant attention for providing privacy-preserving recommendation services. However, existing FedRecs assume that all users have the same requirements for privacy protection, i.e.,…

Machine Learning · Computer Science 2025-08-11 Ce Na , Kai Yang , Dengzhao Fang , Yu Li , Jingtong Gao , Chengcheng Zhu , Jiale Zhang , Xiaobing Sun , Yi Chang

Recently, Graph Neural Network (GNN) has achieved remarkable progresses in various real-world tasks on graph data, consisting of node features and the adjacent information between different nodes. High-performance GNN models always depend…

Machine Learning · Computer Science 2022-04-26 Chaochao Chen , Jun Zhou , Longfei Zheng , Huiwen Wu , Lingjuan Lyu , Jia Wu , Bingzhe Wu , Ziqi Liu , Li Wang , Xiaolin Zheng

Federated graph learning (FGL) has recently emerged as a promising privacy-preserving paradigm that enables distributed graph learning across multiple data owners. A critical privacy concern in federated learning is whether an adversary can…

Machine Learning · Computer Science 2026-01-28 Shuyue Wei , Wantong Chen , Tongyu Wei , Chen Gong , Yongxin Tong , Lizhen Cui

Graph Neural Networks (GNNs) unlock new ways of learning from graph-structured data, proving highly effective in capturing complex relationships and patterns. Federated GNNs (FGNNs) have emerged as a prominent distributed learning paradigm…

Machine Learning · Computer Science 2026-01-23 Xiuling Wang , Xin Huang , Haibo Hu , Jianliang Xu

Graph Neural Networks (GNNs) have experienced rapid advancements in recent years due to their ability to learn meaningful representations from graph data structures. Federated Learning (FL) has emerged as a viable machine learning approach…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-06-17 Pranjal Naman , Yogesh Simmhan

Temporal graph clustering is a complex task that involves discovering meaningful structures in dynamic graphs where relationships and entities change over time. Existing methods typically require centralized data collection, which poses…

Machine Learning · Computer Science 2025-03-04 Zihao Zhou , Yang Liu , Xianghong Xu , Qian Li

The graph convolutional networks (GCN) recently proposed by Kipf and Welling are an effective graph model for semi-supervised learning. This model, however, was originally designed to be learned with the presence of both training and test…

Machine Learning · Computer Science 2018-02-01 Jie Chen , Tengfei Ma , Cao Xiao

Graph Convolutional Networks (GCNs) are extensively utilized for deep learning on graphs. The large data sizes of graphs and their vertex features make scalable training algorithms and distributed memory systems necessary. Since the…

Machine Learning · Computer Science 2022-12-14 Gunduz Vehbi Demirci , Aparajita Haldar , Hakan Ferhatosmanoglu

Graph-structured data is prevalent in many applications. In subgraph federated learning (FL), this data is distributed across clients, each with a local subgraph. Personalized subgraph FL aims to develop a customized model for each client…

Machine Learning · Computer Science 2025-08-20 Wenfei Liang , Yanan Zhao , Rui She , Yiming Li , Wee Peng Tay

Conventional recommender systems are required to train the recommendation model using a centralized database. However, due to data privacy concerns, this is often impractical when multi-parties are involved in recommender system training.…

Cryptography and Security · Computer Science 2024-08-28 Peihua Mai , Yan Pang

We present a novel federated multi-task learning method that leverages cross-client similarity to enable personalized learning for each client. To avoid transmitting the entire model to the parameter server, we propose a…

Machine Learning · Computer Science 2025-06-13 Ahmed Elbakary , Chaouki Ben Issaid , Mehdi Bennis

Federated graph learning (FGL) enables multiple clients to collaboratively train powerful graph neural networks without sharing their private, decentralized graph data. Inherited from generic federated learning, FGL is critically challenged…

Machine Learning · Computer Science 2025-08-15 Xinrui Li , Qilin Fan , Tianfu Wang , Kaiwen Wei , Ke Yu , Xu Zhang

While federated learning has shown strong results in optimizing a machine learning model without direct access to the original data, its performance may be hindered by intermittent client availability which slows down the convergence and…

Machine Learning · Computer Science 2022-12-08 Zheng Wang , Xiaoliang Fan , Jianzhong Qi , Haibing Jin , Peizhen Yang , Siqi Shen , Cheng Wang

Graph Convolutional Neural Networks (GCNs) are widely used for graph analysis. Specifically, in medical applications, GCNs can be used for disease prediction on a population graph, where graph nodes represent individuals and edges represent…

Machine Learning · Computer Science 2022-07-19 Liang Peng , Nan Wang , Nicha Dvornek , Xiaofeng Zhu , Xiaoxiao Li

Graph convolutional networks (GCNs) have been employed as a kind of significant tool on many graph-based applications recently. Inspired by convolutional neural networks (CNNs), GCNs generate the embeddings of nodes by aggregating the…

Machine Learning · Computer Science 2020-11-20 Tao Huang , Yihan Zhang , Jiajing Wu , Junyuan Fang , Zibin Zheng