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Modern graph neural networks (GNNs) learn node embeddings through multilayer local aggregation and achieve great success in applications on assortative graphs. However, tasks on disassortative graphs usually require non-local aggregation.…

机器学习 · 计算机科学 2021-12-14 Meng Liu , Zhengyang Wang , Shuiwang Ji

The pre-training on the graph neural network model can learn the general features of large-scale networks or networks of the same type by self-supervised methods, which allows the model to work even when node labels are missing. However,…

机器学习 · 计算机科学 2022-04-19 Ke-jia Chen , Jiajun Zhang , Linpu Jiang , Yunyun Wang , Yuxuan Dai

Recommender systems are able to learn user preferences based on user and item representations via their historical behaviors. To improve representation learning, recent recommendation models start leveraging information from various…

信息检索 · 计算机科学 2023-05-31 Cheng Wu , Chaokun Wang , Jingcao Xu , Ziwei Fang , Tiankai Gu , Changping Wang , Yang Song , Kai Zheng , Xiaowei Wang , Guorui Zhou

Graph embedding techniques have led to significant progress in recent years. However, present techniques are not effective enough to capture the patterns of networks. This paper propose neighbor2vec, a neighbor-based sampling strategy used…

社会与信息网络 · 计算机科学 2022-01-11 Zhiming Lin

Nearest neighbour graphs are widely used to capture the geometry or topology of a dataset. One of the most common strategies to construct such a graph is based on selecting a fixed number k of nearest neighbours (kNN) for each point.…

机器学习 · 统计学 2022-08-02 Tetsuya Matsumoto , Stephen Zhang , Geoffrey Schiebinger

Graph representation learning has drawn increasing attention in recent years, especially for learning the low dimensional embedding at both node and graph level for classification and recommendations tasks. To enable learning the…

机器学习 · 计算机科学 2022-01-20 Tiehua Zhang , Yuze Liu , Xin Chen , Xiaowei Huang , Feng Zhu , Xi Zheng

Representation learning on graphs that evolve has recently received significant attention due to its wide application scenarios, such as bioinformatics, knowledge graphs, and social networks. The propagation of information in graphs is…

机器学习 · 计算机科学 2021-06-04 Mingyi Liu , Zhiying Tu , Xiaofei Xu , Zhongjie Wang

Graph Nerual Networks (GNNs) are effective models in graph embedding. It extracts shallow features and neighborhood information by aggregating neighbor information to learn the embedding representation of different nodes. However, the local…

社会与信息网络 · 计算机科学 2023-12-14 Kejia Zhang

This paper presents a methodology for image classification using Graph Neural Network (GNN) models. We transform the input images into region adjacency graphs (RAGs), in which regions are superpixels and edges connect neighboring…

Visual recognition requires rich representations that span levels from low to high, scales from small to large, and resolutions from fine to coarse. Even with the depth of features in a convolutional network, a layer in isolation is not…

计算机视觉与模式识别 · 计算机科学 2019-01-07 Fisher Yu , Dequan Wang , Evan Shelhamer , Trevor Darrell

Graph matching is a commonly used technique in computer vision and pattern recognition. Recent data-driven approaches have improved the graph matching accuracy remarkably, whereas some traditional algorithm-based methods are more robust to…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Haoru Tan , Chuang Wang , Sitong Wu , Xu-Yao Zhang , Fei Yin , Cheng-Lin Liu

Graph neural networks (GNNs) have achieved impressive impressions for graph-related tasks. However, most GNNs are primarily studied under the cases of signal domain with supervised training, which requires abundant task-specific labels and…

机器学习 · 计算机科学 2025-07-16 Jinhui Pang , Zixuan Wang , Jiliang Tang , Mingyan Xiao , Nan Yin

Graph Convolutional Neural Networks (Graph CNNs) are generalizations of classical CNNs to handle graph data such as molecular data, point could and social networks. Current filters in graph CNNs are built for fixed and shared graph…

机器学习 · 计算机科学 2018-01-11 Ruoyu Li , Sheng Wang , Feiyun Zhu , Junzhou Huang

Graph Neural Networks (GNNs) have achieved remarkable performance on graph-based tasks. The key idea for GNNs is to obtain informative representation through aggregating information from local neighborhoods. However, it remains an open…

机器学习 · 计算机科学 2022-06-29 Songtao Liu , Rex Ying , Hanze Dong , Lanqing Li , Tingyang Xu , Yu Rong , Peilin Zhao , Junzhou Huang , Dinghao Wu

Graph Neural Networks (GNNs) for prediction tasks like node classification or edge prediction have received increasing attention in recent machine learning from graphically structured data. However, a large quantity of labeled graphs is…

机器学习 · 计算机科学 2021-11-22 Yuexin Wu , Yichong Xu , Aarti Singh , Yiming Yang , Artur Dubrawski

In this paper, we propose an end-to-end graph learning framework, namely Deep Iterative and Adaptive Learning for Graph Neural Networks (DIAL-GNN), for jointly learning the graph structure and graph embeddings simultaneously. We first cast…

机器学习 · 计算机科学 2019-12-18 Yu Chen , Lingfei Wu , Mohammed J. Zaki

Modelling long-range dependencies is critical for scene understanding tasks in computer vision. Although convolution neural networks (CNNs) have excelled in many vision tasks, they are still limited in capturing long-range structured…

计算机视觉与模式识别 · 计算机科学 2022-09-21 Li Zhang , Mohan Chen , Anurag Arnab , Xiangyang Xue , Philip H. S. Torr

It is not until recently that graph neural networks (GNNs) are adopted to perform graph representation learning, among which, those based on the aggregation of features within the neighborhood of a node achieved great success. However,…

机器学习 · 计算机科学 2019-12-10 Yilun Jin , Guojie Song , Chuan Shi

Graph neural networks (GNNs) manifest pathologies including over-smoothing and limited discriminating power as a result of suboptimally expressive aggregating mechanisms. We herein present a unifying framework for stochastic aggregation…

机器学习 · 统计学 2021-03-01 Yuanqing Wang , Theofanis Karaletsos

Existing approaches for graph neural networks commonly suffer from the oversmoothing issue, regardless of how neighborhoods are aggregated. Most methods also focus on transductive scenarios for fixed graphs, leading to poor generalization…

机器学习 · 计算机科学 2020-06-25 Kyuyong Shin , Wonyoung Shin , Jung-Woo Ha , Sunyoung Kwon