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In recent years, the use of edge information provided by knowledge graphs together with the advantages of higher-order connectivity in graph neural networks for recommendation systems has become an important research direction. However,…

Information Retrieval · Computer Science 2026-05-12 Zhifei Hu , Feng Xia

Recommender systems are pivotal in enhancing user experiences across various web applications by analyzing the complicated relationships between users and items. Knowledge graphs(KGs) have been widely used to enhance the performance of…

Information Retrieval · Computer Science 2024-07-02 Guangsi Shi , Xiaofeng Deng , Linhao Luo , Lijuan Xia , Lei Bao , Bei Ye , Fei Du , Shirui Pan , Yuxiao Li

Graph representation learning has emerged as a powerful tool for preserving graph topology when mapping nodes to vector representations, enabling various downstream tasks such as node classification and community detection. However, most…

Machine Learning · Computer Science 2025-03-21 Kaizhe Fan , Quanjun Li

Knowledge graph (KG) plays an increasingly important role in recommender systems. Recently, graph neural networks (GNNs) based model has gradually become the theme of knowledge-aware recommendation (KGR). However, there is a natural…

Information Retrieval · Computer Science 2022-04-20 Ding Zou , Wei Wei , Xian-Ling Mao , Ziyang Wang , Minghui Qiu , Feida Zhu , Xin Cao

This paper focuses on learning representation on the whole graph level in an unsupervised manner. Learning graph-level representation plays an important role in a variety of real-world issues such as molecule property prediction, protein…

Machine Learning · Computer Science 2024-01-08 Ge Wang , Zelin Zang , Jiangbin Zheng , Jun Xia , Stan Z. Li

Graph Neural Networks (GNNs) have recently gained widespread attention as a successful tool for analyzing graph-structured data. However, imperfect graph structure with noisy links lacks enough robustness and may damage graph…

Machine Learning · Computer Science 2025-03-25 Xianlin Zeng , Yufeng Wang , Yuqi Sun , Guodong Guo , Wenrui Ding , Baochang Zhang

Graph Contrastive Learning (GCL) has emerged as a promising approach in the realm of graph self-supervised learning. Prevailing GCL methods mainly derive from the principles of contrastive learning in the field of computer vision: modeling…

Machine Learning · Computer Science 2023-08-03 Zhiyuan Ning , Pengfei Wang , Pengyang Wang , Ziyue Qiao , Wei Fan , Denghui Zhang , Yi Du , Yuanchun Zhou

Optimizing communication topology is fundamental to the efficiency and effectiveness of Large Language Model (LLM)-based Multi-Agent Systems (MAS). While recent approaches utilize reinforcement learning to dynamically construct…

Computation and Language · Computer Science 2026-03-04 Yueyang Cang , Xiaoteng Zhang , Erlu Zhao , Zehua Ji , Yuhang Liu , Yuchen He , Zhiyuan Ning , Chen Yijun , Wenge Que , Li Shi

Recommender systems (RS) have become essential tools for helping users efficiently navigate the overwhelming amount of information on e-commerce and social platforms. However, traditional RS relying on Collaborative Filtering (CF) struggles…

Information Retrieval · Computer Science 2025-02-27 Mingdai Yang , Zhiwei Liu , Liangwei Yang , Xiaolong Liu , Chen Wang , Hao Peng , Philip S. Yu

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…

Information Retrieval · Computer Science 2024-07-22 Xinzhou Jin , Jintang Li , Liang Chen , Chenyun Yu , Yuanzhen Xie , Tao Xie , Chengxiang Zhuo , Zang Li , Zibin Zheng

Conversational Recommender Systems (CRSs) have emerged as a transformative paradigm for offering personalized recommendations through natural language dialogue. However, they face challenges with knowledge sparsity, as users often provide…

Computation and Language · Computer Science 2025-03-11 Zhangchi Qiu , Linhao Luo , Zicheng Zhao , Shirui Pan , Alan Wee-Chung Liew

Contrastive learning methods based on InfoNCE loss are popular in node representation learning tasks on graph-structured data. However, its reliance on data augmentation and its quadratic computational complexity might lead to inconsistency…

Machine Learning · Computer Science 2022-12-12 Hengrui Zhang , Qitian Wu , Yu Wang , Shaofeng Zhang , Junchi Yan , Philip S. Yu

Multi-modal recommender system focuses on utilizing rich modal information ( i.e., images and textual descriptions) of items to improve recommendation performance. The current methods have achieved remarkable success with the powerful…

Information Retrieval · Computer Science 2025-08-20 Shouxing Ma , Yawen Zeng , Shiqing Wu , Guandong Xu

Large language models have been flourishing in the natural language processing (NLP) domain, and their potential for recommendation has been paid much attention to. Despite the intelligence shown by the recommendation-oriented finetuned…

Information Retrieval · Computer Science 2024-06-28 Jizheng Chen , Kounianhua Du , Jianghao Lin , Bo Chen , Ruiming Tang , Weinan Zhang

Graph Neural Networks (GNNs) have demonstrated remarkable effectiveness in various graph representation learning tasks. However, most existing GNNs focus primarily on capturing local information through explicit graph convolution, often…

Machine Learning · Computer Science 2025-01-31 Jinlu Wang , Yanfeng Sun , Jiapu Wang , Junbin Gao , Shaofan Wang , Jipeng Guo

Recommender systems are crucial for personalizing user experiences but often depend on implicit feedback data, which can be noisy and misleading. Existing denoising studies involve incorporating auxiliary information or learning strategies…

Information Retrieval · Computer Science 2025-02-14 Shuyao Wang , Zhi Zheng , Yongduo Sui , Hui Xiong

Out-of-distribution (OOD) generalization has emerged as a significant challenge in graph recommender systems. Traditional graph neural network algorithms often fail because they learn spurious environmental correlations instead of stable…

Information Retrieval · Computer Science 2025-11-25 Jiahao Liang , Haoran Yang , Xiangyu Zhao , Zhiwen Yu , Mianjie Li , Chuan Shi , Kaixiang Yang

The extensive world knowledge and powerful reasoning capabilities of large language models (LLMs) have attracted significant attention in recommendation systems (RS). Specifically, The chain of thought (CoT) has been shown to improve the…

Information Retrieval · Computer Science 2025-08-22 Yu Xia , Rui Zhong , Zeyu Song , Wei Yang , Junchen Wan , Qingpeng Cai , Chi Lu , Peng Jiang

Modern recommender systems aim to deeply understand users' complex preferences through their past interactions. While deep collaborative filtering approaches using Graph Neural Networks (GNNs) excel at capturing user-item relationships,…

Information Retrieval · Computer Science 2025-06-03 Yangqin Jiang , Yuhao Yang , Lianghao Xia , Da Luo , Kangyi Lin , Chao Huang

We investigate node representation learning on text-attributed graphs (TAGs), where nodes are associated with text information. Although recent studies on graph neural networks (GNNs) and pretrained language models (PLMs) have exhibited…

Information Retrieval · Computer Science 2024-04-22 Peiyan Zhang , Chaozhuo Li , Liying Kang , Feiran Huang , Senzhang Wang , Xing Xie , Sunghun Kim