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Graph Neural Networks (GNNs) often suffer from degree bias in node classification tasks, where prediction performance varies across nodes with different degrees. Several approaches, which adopt Graph Contrastive Learning (GCL), have been…

Machine Learning · Computer Science 2025-06-06 Jingyu Hu , Hongbo Bo , Jun Hong , Xiaowei Liu , Weiru Liu

Recent advances in unsupervised deep graph clustering have been significantly promoted by contrastive learning. Despite the strides, most graph contrastive learning models face challenges: 1) graph augmentation is used to improve learning…

Machine Learning · Computer Science 2024-08-23 Chusheng Zeng , Bocheng Wang , Jinghui Yuan , Rong Wang , Mulin Chen

Attributed graph clustering holds significant importance in modern data analysis. However, due to the complexity of graph data and the heterogeneity of node attributes, leveraging graph information for clustering remains challenging. To…

Machine Learning · Computer Science 2025-08-01 Binxiong Li , Xu Xiang , Xue Li , Quanzhou Lou , Binyu Zhao , Yujie Liu , Huijie Tang , Benhan Yang

Graph augmentation with contrastive learning has gained significant attention in the field of recommendation systems due to its ability to learn expressive user representations, even when labeled data is limited. However, directly applying…

Machine Learning · Computer Science 2024-03-26 Qianru Zhang , Lianghao Xia , Xuheng Cai , Siuming Yiu , Chao Huang , Christian S. Jensen

Graph Neural Networks (GNNs) have become popular in Graph Representation Learning (GRL). One fundamental application is few-shot node classification. Most existing methods follow the meta learning paradigm, showing the ability of fast…

Machine Learning · Computer Science 2023-09-20 Hao Liu , Jiarui Feng , Lecheng Kong , Dacheng Tao , Yixin Chen , Muhan Zhang

Knowledge Graphs (KGs) have been utilized as useful side information to improve recommendation quality. In those recommender systems, knowledge graph information often contains fruitful facts and inherent semantic relatedness among items.…

Information Retrieval · Computer Science 2022-08-19 Yuhao Yang , Chao Huang , Lianghao Xia , Chenliang Li

Graph Neural Networks (GNNs) have achieved remarkable success in learning node representations and have shown strong performance in tasks such as node classification. However, recent findings indicate that the presence of noise in…

Machine Learning · Computer Science 2025-07-01 Yancheng Wang , Yingzhen Yang

In traditional Graph Neural Networks (GNN), graph convolutional learning is carried out through topology-driven recursive node content aggregation for network representation learning. In reality, network topology and node content are not…

Social and Information Networks · Computer Science 2020-03-31 Min Shi , Yufei Tang , Xingquan Zhu

Dynamic graph modeling has recently attracted much attention due to its extensive applications in many real-world scenarios, such as recommendation systems, financial transactions, and social networks. Although many works have been proposed…

Machine Learning · Computer Science 2021-05-18 Lu Wang , Xiaofu Chang , Shuang Li , Yunfei Chu , Hui Li , Wei Zhang , Xiaofeng He , Le Song , Jingren Zhou , Hongxia Yang

This study introduces the Multi-Scale Weight-Based Pairwise Coarsening and Contrastive Learning (MPCCL) model, a novel approach for attributed graph clustering that effectively bridges critical gaps in existing methods, including long-range…

Machine Learning · Computer Science 2025-07-29 Binxiong Li , Yuefei Wang , Binyu Zhao , Heyang Gao , Benhan Yang , Quanzhou Luo , Xue Li , Xu Xiang , Yujie Liu , Huijie Tang

Self-supervised topological deep learning (TDL) represents a nascent but underexplored area with significant potential for modeling higher-order interactions in simplicial complexes and cellular complexes to derive representations of…

Machine Learning · Computer Science 2025-05-29 Bin Qin , Qirui Ji , Jiangmeng Li , Yupeng Wang , Xuesong Wu , Jianwen Cao , Fanjiang Xu

Graph Neural Networks (GNNs) have achieved promising performance in semi-supervised node classification in recent years. However, the problem of insufficient supervision, together with representation collapse, largely limits the performance…

Machine Learning · Computer Science 2025-03-07 Xihong Yang , Yiqi Wang , Yue Liu , Yi Wen , Lingyuan Meng , Sihang Zhou , Xinwang Liu , En Zhu

As one of the most effective self-supervised representation learning methods, contrastive learning (CL) relies on multiple negative pairs to contrast against each positive pair. In the standard practice of contrastive learning, data…

Machine Learning · Computer Science 2024-01-18 Lu Wang , Chao Du , Pu Zhao , Chuan Luo , Zhangchi Zhu , Bo Qiao , Wei Zhang , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang , Qi Zhang

Graph Collaborative Filtering (GCF), one of the most widely adopted recommendation system methods, effectively captures intricate relationships between user and item interactions. Graph Contrastive Learning (GCL) based GCF has gained…

Information Retrieval · Computer Science 2024-10-30 Yangxun Ou , Lei Chen , Fenglin Pan , Yupeng Wu

Since annotating medical images for segmentation tasks commonly incurs expensive costs, it is highly desirable to design an annotation-efficient method to alleviate the annotation burden. Recently, contrastive learning has exhibited a great…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Yixuan Wu , Jintai Chen , Jiahuan Yan , Yiheng Zhu , Danny Z. Chen , Jian Wu

Heterogeneous graph neural networks (HGNNs) have demonstrated their superiority in exploiting auxiliary information for recommendation tasks. However, graphs constructed using meta-paths in HGNNs are usually too dense and contain a large…

Information Retrieval · Computer Science 2025-06-02 Lei Sang , Yu Wang , Yiwen Zhang

Heterogeneous graph neural networks (HGNNs) have significantly propelled the information retrieval (IR) field. Still, the effectiveness of HGNNs heavily relies on high-quality labels, which are often expensive to acquire. This challenge has…

Machine Learning · Computer Science 2024-09-12 Siqing Li , Jin-Duk Park , Wei Huang , Xin Cao , Won-Yong Shin , Zhiqiang Xu

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…

Information Retrieval · Computer Science 2025-01-14 Jiayang Wu , Wensheng Gan , Huashen Lu , Philip S. Yu

Recent studies show that graph neural networks (GNNs) are prevalent to model high-order relationships for collaborative filtering (CF). Towards this research line, graph contrastive learning (GCL) has exhibited powerful performance in…

Information Retrieval · Computer Science 2024-02-27 Xubin Ren , Lianghao Xia , Jiashu Zhao , Dawei Yin , Chao Huang

Due to the power of learning representations from unlabeled graphs, graph contrastive learning (GCL) has shown excellent performance in community detection tasks. Existing GCL-based methods on the community detection usually focused on…

Social and Information Networks · Computer Science 2024-12-03 Qi Wen , Yiyang Zhang , Yutong Ye , Yingbo Zhou , Nan Zhang , Xiang Lian , Mingsong Chen
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