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Anomaly detection from graph data has drawn much attention due to its practical significance in many critical applications including cybersecurity, finance, and social networks. Existing data mining and machine learning methods are either…

机器学习 · 计算机科学 2022-01-25 Yu Zheng , Ming Jin , Yixin Liu , Lianhua Chi , Khoa T. Phan , Yi-Ping Phoebe Chen

This paper introduces a novel approach that integrates graph theory into self-supervised representation learning. Traditional methods focus on intra-instance variations generated by applying augmentations. However, they often overlook…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Ali Javidani , Babak Nadjar Araabi , Mohammad Amin Sadeghi

Graph neural networks, a powerful deep learning tool to model graph-structured data, have demonstrated remarkable performance on numerous graph learning tasks. To address the data noise and data scarcity issues in deep graph learning, the…

机器学习 · 计算机科学 2022-11-22 Kaize Ding , Zhe Xu , Hanghang Tong , Huan Liu

Unsupervised Multiplex Graph Learning (UMGL) aims to learn node representations on various edge types without manual labeling. However, existing research overlooks a key factor: the reliability of the graph structure. Real-world data often…

机器学习 · 计算机科学 2024-09-27 Zhixiang Shen , Shuo Wang , Zhao Kang

Self-supervised learning (SSL) of graph neural networks is emerging as a promising way of leveraging unlabeled data. Currently, most methods are based on contrastive learning adapted from the image domain, which requires view generation and…

机器学习 · 计算机科学 2022-07-12 Yaochen Xie , Zhao Xu , Shuiwang Ji

Recently deep learning has been successfully applied to unsupervised active learning. However, current method attempts to learn a nonlinear transformation via an auto-encoder while ignoring the sample relation, leaving huge room to design…

机器学习 · 计算机科学 2021-11-09 Handong Ma , Changsheng Li , Xinchu Shi , Ye Yuan , Guoren Wang

Advanced graph neural networks have shown great potentials in graph classification tasks recently. Different from node classification where node embeddings aggregated from local neighbors can be directly used to learn node labels, graph…

机器学习 · 计算机科学 2022-03-16 Hao Jia , Junzhong Ji , Minglong Lei

We propose $\textbf{MGCL}$, a model-driven graph contrastive learning (GCL) framework that leverages graphons (probabilistic generative models for graphs) to guide contrastive learning by accounting for the data's underlying generative…

机器学习 · 计算机科学 2025-06-09 Ali Azizpour , Nicolas Zilberstein , Santiago Segarra

Self-Supervised learning aims to eliminate the need for expensive annotation in graph representation learning, where graph contrastive learning (GCL) is trained with the self-supervision signals containing data-data pairs. These data-data…

机器学习 · 计算机科学 2022-07-06 Adnan Ali , Jinlong Li

Self-supervised learning is gaining considerable attention as a solution to avoid the requirement of extensive annotations in representation learning on graphs. Current algorithms are based on contrastive learning, which is computation an…

机器学习 · 计算机科学 2023-09-06 Oscar Pina , Verónica Vilaplana

The self-supervised learning (SSL) paradigm is an essential exploration area, which tries to eliminate the need for expensive data labeling. Despite the great success of SSL methods in computer vision and natural language processing, most…

机器学习 · 计算机科学 2023-09-13 Piotr Bielak , Tomasz Kajdanowicz , Nitesh V. Chawla

Graph matching has important applications in pattern recognition and beyond. Current approaches predominantly adopt supervised learning, demanding extensive labeled data which can be limited or costly. Meanwhile, self-supervised learning…

机器学习 · 计算机科学 2024-06-26 Jianyuan Bo , Yuan Fang

Graph Neural Networks (GNNs) have achieved great success in learning graph representations and thus facilitating various graph-related tasks. However, most GNN methods adopt a supervised learning setting, which is not always feasible in…

机器学习 · 计算机科学 2022-08-16 Hongliang Chi , Yao Ma

Data augmentation has been widely used to improve generalizability of machine learning models. However, comparatively little work studies data augmentation for graphs. This is largely due to the complex, non-Euclidean structure of graphs,…

机器学习 · 计算机科学 2020-12-03 Tong Zhao , Yozen Liu , Leonardo Neves , Oliver Woodford , Meng Jiang , Neil Shah

In the literature, most existing graph-based semi-supervised learning (SSL) methods only use the label information of observed samples in the label propagation stage, while ignoring such valuable information when learning the graph. In this…

计算机视觉与模式识别 · 计算机科学 2017-02-14 Liansheng Zhuang , Zihan Zhou , Jingwen Yin , Shenghua Gao , Zhouchen Lin , Yi Ma , Nenghai Yu

Self-supervised representation learning~(SSRL) has advanced considerably by exploiting the transformation invariance assumption under artificially designed data augmentations. While augmentation-based SSRL algorithms push the boundaries of…

机器学习 · 计算机科学 2024-03-22 Yi Sui , Tongzi Wu , Jesse C. Cresswell , Ga Wu , George Stein , Xiao Shi Huang , Xiaochen Zhang , Maksims Volkovs

Self-supervised representation learning on text-attributed graphs, which aims to create expressive and generalizable representations for various downstream tasks, has received increasing research attention lately. However, existing methods…

计算与语言 · 计算机科学 2023-10-24 Yichuan Li , Kaize Ding , Kyumin Lee

Data-efficient learning on graphs (GEL) is essential in real-world applications. Existing GEL methods focus on learning useful representations for nodes, edges, or entire graphs with ``small'' labeled data. But the problem of data-efficient…

机器学习 · 计算机科学 2023-02-24 Chang Liu , Yuwen Yang , Zhe Xie , Hongtao Lu , Yue Ding

The interconnectedness and interdependence of modern graphs are growing ever more complex, causing enormous resources for processing, storage, communication, and decision-making of these graphs. In this work, we focus on the task graph…

机器学习 · 计算机科学 2023-01-16 Ryan Wickman , Xiaofei Zhang , Weizi Li

We present a framework of Training Free Graph Matching (TFGM) to boost the performance of Graph Neural Networks (GNNs) based graph matching, providing a fast promising solution without training (training-free). TFGM provides four widely…

机器学习 · 计算机科学 2022-02-15 Zhiyuan Liu , Yixin Cao , Fuli Feng , Xiang Wang , Jie Tang , Kenji Kawaguchi , Tat-Seng Chua