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Graph contrastive learning (GCL), as an emerging self-supervised learning technique on graphs, aims to learn representations via instance discrimination. Its performance heavily relies on graph augmentation to reflect invariant patterns…

机器学习 · 计算机科学 2023-06-22 Lu Lin , Jinghui Chen , Hongning Wang

The decoupled Graph Convolutional Network (GCN), a recent development of GCN that decouples the neighborhood aggregation and feature transformation in each convolutional layer, has shown promising performance for graph representation…

机器学习 · 计算机科学 2022-11-16 Jinsong Chen , Boyu Li , Kun He

Graph Neural Networks (GNNs) are powerful tools for recommendation systems, but they often struggle under data sparsity and noise. To address these issues, we implemented LightGCL, a graph contrastive learning model that uses Singular Value…

信息检索 · 计算机科学 2025-06-03 Aravinda Jatavallabha , Prabhanjan Bharadwaj , Ashish Chander

Link prediction tasks focus on predicting possible future connections. Most existing researches measure the likelihood of links by different similarity scores on node pairs and predict links between nodes. However, the similarity-based…

机器学习 · 计算机科学 2023-03-09 Zehua Zhang , Shilin Sun , Guixiang Ma , Caiming Zhong

Graph Transformer (GT), as a special type of Graph Neural Networks (GNNs), utilizes multi-head attention to facilitate high-order message passing. However, this also imposes several limitations in node classification applications: 1) nodes…

机器学习 · 计算机科学 2024-10-16 Jiajun Zhou , Xuanze Chen , Chenxuan Xie , Yu Shanqing , Qi Xuan , Xiaoniu Yang

Learning graph convolutional networks (GCNs) is an emerging field which aims at generalizing convolutional operations to arbitrary non-regular domains. In particular, GCNs operating on spatial domains show superior performances compared to…

计算机视觉与模式识别 · 计算机科学 2021-12-08 Hichem Sahbi

Online continual learning for image classification is crucial for models to adapt to new data while retaining knowledge of previously learned tasks. This capability is essential to address real-world challenges involving dynamic…

计算机视觉与模式识别 · 计算机科学 2025-02-14 Adjovi Sim , Zhengkui Wang , Aik Beng Ng , Shalini De Mello , Simon See , Wonmin Byeon

Graph Transformer shows remarkable potential in brain network analysis due to its ability to model graph structures and complex node relationships. Most existing methods typically model the brain as a flat network, ignoring its modular…

机器学习 · 计算机科学 2025-11-25 Jiajun Ma , Yongchao Zhang , Chao Zhang , Zhao Lv , Shengbing Pei

Sleep stage classification is essential for sleep assessment and disease diagnosis. Although previous attempts to classify sleep stages have achieved high classification performance, several challenges remain open: 1) How to effectively…

信号处理 · 电气工程与系统科学 2021-09-07 Ziyu Jia , Youfang Lin , Jing Wang , Xiaojun Ning , Yuanlai He , Ronghao Zhou , Yuhan Zhou , Li-wei H. Lehman

Graph contrastive learning (GCL) has emerged as a pivotal technique in the domain of graph representation learning. A crucial aspect of effective GCL is the caliber of generated positive and negative samples, which is intrinsically dictated…

机器学习 · 计算机科学 2024-02-19 Xinjian Zhao , Liang Zhang , Yang Liu , Ruocheng Guo , Xiangyu Zhao

Graph neural networks (GNNs) are often trained on individual datasets, requiring specialized models and significant hyperparameter tuning due to the unique structures and features of each dataset. This approach limits the scalability and…

机器学习 · 计算机科学 2026-02-17 Divyansha Lachi , Mehdi Azabou , Vinam Arora , Eva Dyer

Graph convolutional networks (GCNs) are \emph{discriminative models} that directly model the class posterior $p(y|\mathbf{x})$ for semi-supervised classification of graph data. While being effective, as a representation learning approach,…

机器学习 · 计算机科学 2023-05-30 Tianchun Wang , Farzaneh Mirzazadeh , Xiang Zhang , Jie Chen

Multi-view data containing complementary and consensus information can facilitate representation learning by exploiting the intact integration of multi-view features. Because most objects in real world often have underlying connections,…

机器学习 · 计算机科学 2023-08-15 Zhaoliang Chen , Lele Fu , Shunxin Xiao , Shiping Wang , Claudia Plant , Wenzhong Guo

Graph convolutional networks (GCNs) have emerged as dominant methods for skeleton-based action recognition. However, they still suffer from two problems, namely, neighborhood constraints and entangled spatiotemporal feature representations.…

计算机视觉与模式识别 · 计算机科学 2022-01-11 Ruwen Bai , Min Li , Bo Meng , Fengfa Li , Miao Jiang , Junxing Ren , Degang Sun

Graph neural networks (GNNs) have recently emerged as an effective approach to model neighborhood signals in collaborative filtering. Towards this research line, graph contrastive learning (GCL) demonstrates robust capabilities to address…

信息检索 · 计算机科学 2024-07-22 Xinzhou Jin , Jintang Li , Liang Chen , Chenyun Yu , Yuanzhen Xie , Tao Xie , Chengxiang Zhuo , Zang Li , Zibin Zheng

In business analysis, providing effective recommendations is essential for enhancing company profits. The utilization of graph-based structures, such as bipartite graphs, has gained popularity for their ability to analyze complex data…

信息检索 · 计算机科学 2025-01-14 Jiayang Wu , Wensheng Gan , Huashen Lu , Philip S. Yu

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…

机器学习 · 计算机科学 2026-05-14 Mohamed Mahmoud Amar , Nairouz Mrabah , Mohamed Bouguessa , Abdoulaye Baniré Diallo

Convolutional Neural Networks (CNN) outperform traditional classification methods in many domains. Recently these methods have gained attention in neuroscience and particularly in brain-computer interface (BCI) community. Here, we introduce…

机器学习 · 计算机科学 2019-02-12 Ivan Zubarev , Rasmus Zetter , Hanna-Leena Halme , Lauri Parkkonen

We focus on graph-to-sequence learning, which can be framed as transducing graph structures to sequences for text generation. To capture structural information associated with graphs, we investigate the problem of encoding graphs using…

计算与语言 · 计算机科学 2019-09-10 Zhijiang Guo , Yan Zhang , Zhiyang Teng , Wei Lu

Graph Neural Networks (GNNs) have demonstrated promising results on exploiting node representations for many downstream tasks through supervised end-to-end training. To deal with the widespread label scarcity issue in real-world…

机器学习 · 计算机科学 2023-08-02 Cheng Wu , Chaokun Wang , Jingcao Xu , Ziyang Liu , Kai Zheng , Xiaowei Wang , Yang Song , Kun Gai