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Different from deep neural networks for non-graph data classification, graph neural networks (GNNs) leverage the information exchange between nodes (or samples) when representing nodes. The category distribution shows an imbalance or even a…

机器学习 · 计算机科学 2021-10-19 Rui Wang , Weixuan Xiong , Qinghu Hou , Ou Wu

Graph matching is one of the most significant graph analytic tasks, which aims to find the node correspondence across different graphs. Most existing graph matching approaches mainly rely on topological information, whose performances are…

人工智能 · 计算机科学 2024-10-15 Haoran Cheng , Dixin Luo , Hongteng Xu

The problem of node-similarity in networks has motivated a plethora of such measures between node-pairs, which make use of the underlying graph structure. However, higher-order relations cannot be losslessly captured by mere graphs and…

社会与信息网络 · 计算机科学 2021-11-02 Govind Sharma , Paarth Gupta , M. Narasihma Murty

Structuring latent representations in a hierarchical manner enables models to learn patterns at multiple levels of abstraction. However, most prevalent image understanding models focus on visual similarity, and learning visual hierarchies…

计算机视觉与模式识别 · 计算机科学 2026-01-07 Ziwei Wang , Sameera Ramasinghe , Chenchen Xu , Julien Monteil , Loris Bazzani , Thalaiyasingam Ajanthan

Hypergraphs are characterized by complex topological structure, representing higher-order interactions among multiple entities through hyperedges. Lately, hypergraph-based deep learning methods to learn informative data representations for…

机器学习 · 计算机科学 2024-09-30 Adrián Bazaga , Pietro Liò , Gos Micklem

Graph neural networks (GNNs) have emerged as a powerful tool for graph classification and representation learning. However, GNNs tend to suffer from over-smoothing problems and are vulnerable to graph perturbations. To address these…

机器学习 · 计算机科学 2021-11-01 Yuzhou Chen , Baris Coskunuzer , Yulia R. Gel

Network embedding is a fervid topic in current networks science and observes that most real complex systems can be embedded in hidden metrics space and emerge as the geometrical property, where the geometric distance between nodes…

物理与社会 · 物理学 2020-04-28 Zongning Wu , Zengru Di , Ying Fan

Graph-level anomaly detection (GLAD) has already gained significant importance and has become a popular field of study, attracting considerable attention across numerous downstream works. The core focus of this domain is to capture and…

机器学习 · 计算机科学 2024-07-17 Zitong Wang , Xuexiong Luo , Enfeng Song , Qiuqing Bai , Fu Lin

Graph Neural Networks (GNNs) have shown remarkable success in graph classification tasks by capturing both structural and feature-based representations. However, real-world graphs often exhibit two critical forms of imbalance: class…

机器学习 · 计算机科学 2025-07-21 Shangyou Wang , Zezhong Ding , Xike Xie

Hyperbolic rotation is commonly used to effectively model knowledge graphs and their inherent hierarchies. However, existing hyperbolic rotation models rely on logarithmic and exponential mappings for feature transformation. These models…

人工智能 · 计算机科学 2024-11-08 Qiuyu Liang , Weihua Wang , Feilong Bao , Guanglai Gao

Learning in hyperbolic spaces has attracted increasing attention due to its superior ability to model hierarchical structures of data. Most existing hyperbolic learning methods use fixed distance measures for all data, assuming a uniform…

计算机视觉与模式识别 · 计算机科学 2025-06-24 Pengxiang Li , Yuwei Wu , Zhi Gao , Xiaomeng Fan , Wei Wu , Zhipeng Lu , Yunde Jia , Mehrtash Harandi

In this work, we address semi-supervised classification of graph data, where the categories of those unlabeled nodes are inferred from labeled nodes as well as graph structures. Recent works often solve this problem via advanced graph…

机器学习 · 计算机科学 2020-01-20 Chunyan Xu , Zhen Cui , Xiaobin Hong , Tong Zhang , Jian Yang , Wei Liu

Recent advances in representation learning on graphs, mainly leveraging graph convolutional networks, have brought a substantial improvement on many graph-based benchmark tasks. While novel approaches to learning node embeddings are highly…

机器学习 · 统计学 2018-11-06 Cătălina Cangea , Petar Veličković , Nikola Jovanović , Thomas Kipf , Pietro Liò

Most of the existing literature regarding hyperbolic embedding concentrate upon supervised learning, whereas the use of unsupervised hyperbolic embedding is less well explored. In this paper, we analyze how unsupervised tasks can benefit…

机器学习 · 计算机科学 2021-03-31 Jiwoong Park , Junho Cho , Hyung Jin Chang , Jin Young Choi

Knowledge graph embeddings (KGE) have been validated as powerful methods for inferring missing links in knowledge graphs (KGs) that they typically map entities into Euclidean space and treat relations as transformations of entities.…

机器学习 · 计算机科学 2024-02-26 Wenjie Zheng , Wenxue Wang , Shu Zhao , Fulan Qian

As a kind of semantic representation of visual object descriptions, attributes are widely used in various computer vision tasks. In most of existing attribute-based research, class-specific attributes (CSA), which are class-level…

计算机视觉与模式识别 · 计算机科学 2019-05-28 Xiaofeng Xu , Ivor W. Tsang , Xiaofeng Cao , Ruiheng Zhang , Chuancai Liu

Graph representation learning has become a mainstream method for fraud detection due to its strong expressive power, which focuses on enhancing node representations through improved neighborhood knowledge capture. However, the focus on…

机器学习 · 计算机科学 2025-09-05 Yudan Song , Yuecen Wei , Yuhang Lu , Qingyun Sun , Minglai Shao , Li-e Wang , Chunming Hu , Xianxian Li , Xingcheng Fu

Predicating macroscopic influences of drugs on human body, like efficacy and toxicity, is a central problem of small-molecule based drug discovery. Molecules can be represented as an undirected graph, and we can utilize graph convolution…

机器学习 · 计算机科学 2017-09-19 Junying Li , Deng Cai , Xiaofei He

Graphical models have been popularly used for capturing conditional independence structure in multivariate data, which are often built upon independent and identically distributed observations, limiting their applicability to complex…

统计方法学 · 统计学 2025-07-03 Yuwen Wang , Changyu Liu , Xin He , Junhui Wang

Graph pooling is an essential ingredient of Graph Neural Networks (GNNs) in graph classification and regression tasks. For these tasks, different pooling strategies have been proposed to generate a graph-level representation by downsampling…

机器学习 · 计算机科学 2021-04-28 Kashob Kumar Roy , Amit Roy , A K M Mahbubur Rahman , M Ashraful Amin , Amin Ahsan Ali