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Dynamic recommendation is essential for modern recommender systems to provide real-time predictions based on sequential data. In real-world scenarios, the popularity of items and interests of users change over time. Based on this…

信息检索 · 计算机科学 2021-01-11 Xiaohan Li , Mengqi Zhang , Shu Wu , Zheng Liu , Liang Wang , Philip S. Yu

Contrastive Learning (CL) has shown promising performance in collaborative filtering. The key idea is to generate augmentation-invariant embeddings by maximizing the Mutual Information between different augmented views of the same instance.…

信息检索 · 计算机科学 2024-01-01 Huiyuan Chen , Vivian Lai , Hongye Jin , Zhimeng Jiang , Mahashweta Das , Xia Hu

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…

机器学习 · 计算机科学 2023-09-20 Hao Liu , Jiarui Feng , Lecheng Kong , Dacheng Tao , Yixin Chen , Muhan Zhang

Collaborative Filtering (CF) has emerged as fundamental paradigms for parameterizing users and items into latent representation space, with their correlative patterns from interaction data. Among various CF techniques, the development of…

信息检索 · 计算机科学 2022-04-29 Lianghao Xia , Chao Huang , Yong Xu , Jiashu Zhao , Dawei Yin , Jimmy Xiangji Huang

Graph contrastive learning (GCL) has recently emerged as a new concept which allows for capitalizing on the strengths of graph neural networks (GNNs) to learn rich representations in a wide variety of applications which involve abundant…

机器学习 · 计算机科学 2024-06-26 Yuzhou Chen , Jose Frias , Yulia R. Gel

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…

机器学习 · 计算机科学 2025-08-01 Binxiong Li , Xu Xiang , Xue Li , Quanzhou Lou , Binyu Zhao , Yujie Liu , Huijie Tang , Benhan Yang

Unsupervised graph representation learning is a non-trivial topic. The success of contrastive methods in the unsupervised representation learning on structured data inspires similar attempts on the graph. Existing graph contrastive learning…

机器学习 · 计算机科学 2024-04-02 Tianyu Zhang , Yuxiang Ren , Wenzheng Feng , Weitao Du , Xuecang Zhang

The interactions of users and items in recommender system could be naturally modeled as a user-item bipartite graph. In recent years, we have witnessed an emerging research effort in exploring user-item graph for collaborative filtering…

机器学习 · 计算机科学 2019-11-26 Xiao Wang , Ruijia Wang , Chuan Shi , Guojie Song , Qingyong Li

Graph collaborative filtering (GCF) has gained considerable attention in recommendation systems by leveraging graph learning techniques to enhance collaborative filtering (CF). One classical approach in GCF is to learn user and item…

信息检索 · 计算机科学 2024-04-09 Xiangmeng Wang , Qian Li , Dianer Yu , Wei Huang , Guandong Xu

Graph Contrastive Learning (GCL) is a widely adopted approach in self-supervised graph representation learning, applying contrastive objectives to produce effective representations. However, current GCL methods primarily focus on capturing…

机器学习 · 计算机科学 2025-07-11 Dongxiao He , Yongqi Huang , Jitao Zhao , Xiaobao Wang , Zhen Wang

Contrastive Learning (CL) has emerged as a dominant technique for unsupervised representation learning which embeds augmented versions of the anchor close to each other (positive samples) and pushes the embeddings of other samples…

人工智能 · 计算机科学 2022-06-15 Jun Xia , Lirong Wu , Ge Wang , Jintao Chen , Stan Z. Li

Graph contrastive learning (GCL) has been widely applied to text classification tasks due to its ability to generate self-supervised signals from unlabeled data, thus facilitating model training. However, existing GCL-based text…

机器学习 · 计算机科学 2024-10-25 Wei Ai , Jianbin Li , Ze Wang , Jiayi Du , Tao Meng , Yuntao Shou , Keqin Li

Graph Convolution Network (GCN) has attracted significant attention and become the most popular method for learning graph representations. In recent years, many efforts have been focused on integrating GCN into the recommender tasks and…

机器学习 · 计算机科学 2020-07-14 Kang Liu , Feng Xue , Richang Hong

knowledge graph-based recommendation methods have achieved great success in the field of recommender systems. However, over-reliance on high-quality knowledge graphs is a bottleneck for such methods. Specifically, the long-tailed…

信息检索 · 计算机科学 2023-10-03 Yubo Gao , Haotian Wu

Graph Contrastive Learning (GCL) has recently emerged as a promising graph self-supervised learning framework for learning discriminative node representations without labels. The widely adopted objective function of GCL benefits from two…

机器学习 · 计算机科学 2024-11-05 Yunhui Liu , Tieke He , Tao Zheng , Jianhua Zhao

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…

机器学习 · 计算机科学 2025-07-01 Yancheng Wang , Yingzhen Yang

Bundle Recommendation (BR) aims at recommending bundled items on online content or e-commerce platform, such as song lists on a music platform or book lists on a reading website. Several graph based models have achieved state-of-the-art…

信息检索 · 计算机科学 2022-12-22 Shixuan Zhu , Qi Shen , Yiming Zhang , Zhenwei Dong , Zhihua Wei

The graph contrastive learning (GCL) framework has gained remarkable achievements in graph representation learning. However, similar to graph neural networks (GNNs), GCL models are susceptible to graph structural attacks. As an unsupervised…

机器学习 · 计算机科学 2025-08-25 Yulin Zhu , Xing Ai , Yevgeniy Vorobeychik , Kai Zhou

Rating is a typical user explicit feedback that visually reflects how much a user likes a related item. The (rating) matrix completion is essentially a rating prediction process, which is also a significant problem in recommender systems.…

机器学习 · 计算机科学 2025-07-09 Xiang Li , Changsheng Shui , Zhongying Zhao , Junyu Dong , Yanwei Yu

Sequential recommendation (SR) aims to predict the subsequent behaviors of users by understanding their successive historical behaviors. Recently, some methods for SR are devoted to alleviating the data sparsity problem (i.e., limited…

信息检索 · 计算机科学 2022-08-30 Ziyang Wang , Huoyu Liu , Wei Wei , Yue Hu , Xian-Ling Mao , Shaojian He , Rui Fang , Dangyang chen