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Through recognizing causal subgraphs, causal graph learning (CGL) has risen to be a promising approach for improving the generalizability of graph neural networks under out-of-distribution (OOD) scenarios. However, the empirical successes…

Machine Learning · Computer Science 2025-07-02 Yujia Yin , Tianyi Qu , Zihao Wang , Yifan Chen

Graph Self-Supervised Learning (GSSL) has emerged as a powerful paradigm for generating high-quality representations for graph-structured data. While multi-scale graph contrastive learning has received increasing attention, many existing…

Machine Learning · Computer Science 2026-05-14 Mohamed Mahmoud Amar , Nairouz Mrabah , Mohamed Bouguessa , Abdoulaye Baniré Diallo

Hypergraphs can model higher-order relationships among data objects that are found in applications such as social networks and bioinformatics. However, recent studies on hypergraph learning that extend graph convolutional networks to…

Machine Learning · Computer Science 2024-05-29 Yumeng Song , Yu Gu , Tianyi Li , Jianzhong Qi , Zhenghao Liu , Christian S. Jensen , Ge Yu

Dataset condensation has significantly improved model training efficiency, but its application on devices with different computing power brings new requirements for different data sizes. Thus, condensing multiple scale graphs simultaneously…

Machine Learning · Computer Science 2024-12-24 Xingcheng Fu , Yisen Gao , Beining Yang , Yuxuan Wu , Haodong Qian , Qingyun Sun , Xianxian Li

Graph contrastive learning algorithms have demonstrated remarkable success in various applications such as node classification, link prediction, and graph clustering. However, in unsupervised graph contrastive learning, some contrastive…

Machine Learning · Computer Science 2023-08-23 Kaili Ma , Haochen Yang , Han Yang , Yongqiang Chen , James Cheng

Graph-based anomaly detection has been widely used for detecting malicious activities in real-world applications. Existing attempts to address this problem have thus far focused on structural feature engineering or learning in the binary…

Machine Learning · Computer Science 2022-08-31 Bo Chen , Jing Zhang , Xiaokang Zhang , Yuxiao Dong , Jian Song , Peng Zhang , Kaibo Xu , Evgeny Kharlamov , Jie Tang

Self-supervised learning of graph neural networks (GNNs) aims to learn an accurate representation of the graphs in an unsupervised manner, to obtain transferable representations of them for diverse downstream tasks. Predictive learning and…

Machine Learning · Computer Science 2022-10-11 Dongki Kim , Jinheon Baek , Sung Ju Hwang

Graph Neural Networks (GNNs) have received increasing attention in many fields. However, due to the lack of prior graphs, their use for semantic labeling has been limited. Here, we propose a novel architecture called the Self-Constructing…

Computer Vision and Pattern Recognition · Computer Science 2020-04-24 Qinghui Liu , Michael Kampffmeyer , Robert Jenssen , Arnt-Børre Salberg

Distributed Graph Neural Network (GNN) training suffers from substantial communication overhead due to the inherent neighborhood dependency in graph-structured data. This neighbor explosion problem requires workers to frequently exchange…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-01-27 Zizhao Zhang , Yihan Xue , Haotian Zhu , Sijia Li , Zhijun Wang , Yujie Xiao

A recent focal area in the space of graph neural networks (GNNs) is graph self-supervised learning (SSL), which aims to derive useful node representations without labeled data. Notably, many state-of-the-art graph SSL methods are…

Machine Learning · Computer Science 2023-03-30 William Shiao , Zhichun Guo , Tong Zhao , Evangelos E. Papalexakis , Yozen Liu , Neil Shah

Among different existing graph self-supervised learning strategies, graph contrastive learning (GCL) has been one of the most prevalent approaches to this problem. Despite the remarkable performance those GCL methods have achieved, existing…

Machine Learning · Computer Science 2022-10-27 Qianlong Wen , Zhongyu Ouyang , Chunhui Zhang , Yiyue Qian , Yanfang Ye , Chuxu Zhang

Graph-based models and contrastive learning have emerged as prominent methods in Collaborative Filtering (CF). While many existing models in CF incorporate these methods in their design, there seems to be a limited depth of analysis…

Information Retrieval · Computer Science 2024-06-24 Yihong Wu , Le Zhang , Fengran Mo , Tianyu Zhu , Weizhi Ma , Jian-Yun Nie

Graph contrastive learning (GCL) alleviates the heavy reliance on label information for graph representation learning (GRL) via self-supervised learning schemes. The core idea is to learn by maximising mutual information for similar…

Machine Learning · Computer Science 2022-10-18 Yizhen Zheng , Shirui Pan , Vincent Cs Lee , Yu Zheng , Philip S. Yu

Unsupervised graph representation learning is critical to a wide range of applications where labels may be scarce or expensive to procure. Contrastive learning (CL) is an increasingly popular paradigm for such settings and the…

Machine Learning · Computer Science 2022-03-15 Puja Trivedi , Ekdeep Singh Lubana , Yujun Yan , Yaoqing Yang , Danai Koutra

Graph condensation has emerged as an intriguing technique to save the expensive training costs of Graph Neural Networks (GNNs) by substituting a condensed small graph with the original graph. Despite the promising results achieved, previous…

Social and Information Networks · Computer Science 2025-01-27 Zhenbang Xiao , Yu Wang , Shunyu Liu , Bingde Hu , Huiqiong Wang , Mingli Song , Tongya Zheng

Graph Representation Learning (GRL) is a fundamental task in machine learning, aiming to encode high-dimensional graph-structured data into low-dimensional vectors. Self-Supervised Learning (SSL) methods are widely used in GRL because they…

Machine Learning · Computer Science 2025-06-13 Shifeng Xie , Aref Einizade , Jhony H. Giraldo

Graph neural networks (GNNs) encounter significant computational challenges when handling large-scale graphs, which severely restricts their efficacy across diverse applications. To address this limitation, graph condensation has emerged as…

Machine Learning · Computer Science 2023-12-12 Xinyi Gao , Tong Chen , Yilong Zang , Wentao Zhang , Quoc Viet Hung Nguyen , Kai Zheng , Hongzhi Yin

Node classification is an essential problem in graph learning. However, many models typically obtain unsatisfactory performance when applied to few-shot scenarios. Some studies have attempted to combine meta-learning with graph neural…

Machine Learning · Computer Science 2024-07-23 Yonghao Liu , Mengyu Li , Ximing Li , Lan Huang , Fausto Giunchiglia , Yanchun Liang , Xiaoyue Feng , Renchu Guan

Recently, some contrastive learning methods have been proposed to simultaneously learn representations and clustering assignments, achieving significant improvements. However, these methods do not take the category information and…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Huasong Zhong , Jianlong Wu , Chong Chen , Jianqiang Huang , Minghua Deng , Liqiang Nie , Zhouchen Lin , Xian-Sheng Hua

When handling streaming graphs, existing graph representation learning models encounter a catastrophic forgetting problem, where previously learned knowledge of these models is easily overwritten when learning with newly incoming graphs. In…

Machine Learning · Computer Science 2024-07-11 Yilun Liu , Ruihong Qiu , Yanran Tang , Hongzhi Yin , Zi Huang