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Node classification is an essential problem in graph learning. However, many models typically obtain unsatisfactory performance when applied to few-shot scenarios. Some studies have attempted to combine meta-learning with graph neural…

机器学习 · 计算机科学 2024-07-23 Yonghao Liu , Mengyu Li , Ximing Li , Lan Huang , Fausto Giunchiglia , Yanchun Liang , Xiaoyue Feng , Renchu Guan

Graph Neural Networks (GNN) have recently gained popularity in the forecasting domain due to their ability to model complex spatial and temporal patterns in tasks such as traffic forecasting and region-based demand forecasting. Most of…

机器学习 · 计算机科学 2023-12-08 Abishek Sriramulu , Nicolas Fourrier , Christoph Bergmeir

A knowledge graph (KG) consists of a set of interconnected typed entities and their attributes. Recently, KGs are popularly used as the auxiliary information to enable more accurate, explainable, and diverse user preference recommendations.…

信息检索 · 计算机科学 2022-04-19 Yuntao Du , Xinjun Zhu , Lu Chen , Ziquan Fang , Yunjun Gao

Graph neural network (GNN) is a powerful learning approach for graph-based recommender systems. Recently, GNNs integrated with contrastive learning have shown superior performance in recommendation with their data augmentation schemes,…

信息检索 · 计算机科学 2023-06-16 Xuheng Cai , Chao Huang , Lianghao Xia , Xubin Ren

Recommender systems have been demonstrated to be effective to meet user's personalized interests for many online services (e.g., E-commerce and online advertising platforms). Recent years have witnessed the emerging success of many deep…

信息检索 · 计算机科学 2023-02-20 Lianghao Xia , Chao Huang , Yong Xu , Peng Dai , Liefeng Bo

A well-designed recommender system can accurately capture the attributes of users and items, reflecting the unique preferences of individuals. Traditional recommendation techniques usually focus on modeling the singular type of behaviors…

信息检索 · 计算机科学 2023-03-06 Hongrui Xuan , Yi Liu , Bohan Li , Hongzhi Yin

Social recommendation which aims to leverage social connections among users to enhance the recommendation performance. With the revival of deep learning techniques, many efforts have been devoted to developing various neural network-based…

信息检索 · 计算机科学 2021-10-11 Huance Xu , Chao Huang , Yong Xu , Lianghao Xia , Hao Xing , Dawei Yin

Contrastive Learning (CL)-based recommender systems have gained prominence in the context of Heterogeneous Graph (HG) due to their capacity to enhance the consistency of representations across different views. However, existing frameworks…

信息检索 · 计算机科学 2024-07-30 Lei Sang , Yu Wang , Yi Zhang , Yiwen Zhang , Xindong Wu

Knowledge graph (KG) enhanced recommendation has demonstrated improved performance in the recommendation system (RecSys) and attracted considerable research interest. Recently the literature has adopted neural graph networks (GNNs) on the…

信息检索 · 计算机科学 2022-11-15 Liangwei Yang , Shen Wang , Jibing Gong , Shaojie Zheng , Shuying Du , Zhiwei Liu , Philip S. Yu

Graph neural networks (GNNs) have been widely applied in the recommendation tasks and have obtained very appealing performance. However, most GNN-based recommendation methods suffer from the problem of data sparsity in practice. Meanwhile,…

信息检索 · 计算机科学 2021-12-15 Yiqi Wang , Chaozhuo Li , Zheng Liu , Mingzheng Li , Jiliang Tang , Xing Xie , Lei Chen , Philip S. Yu

Recommender models aimed at mining users' behavioral patterns have raised great attention as one of the essential applications in daily life. Recent work on graph neural networks (GNNs) or debiasing methods has attained remarkable gains.…

信息检索 · 计算机科学 2024-09-05 Xinfeng Wang , Fumiyo Fukumoto , Jin Cui , Yoshimi Suzuki , Jiyi Li , Dongjin Yu

Cold-start problem is a fundamental challenge for recommendation tasks. The recent self-supervised learning (SSL) on Graph Neural Networks (GNNs) model, PT-GNN, pre-trains the GNN model to reconstruct the cold-start embeddings and has shown…

信息检索 · 计算机科学 2022-05-24 Bowen Hao , Hongzhi Yin , Jing Zhang , Cuiping Li , Hong Chen

The hyperbolic space, characterized by a constant negative curvature and exponentially expanding space, aligns well with the structural properties of heterogeneous graphs. However, although heterogeneous graphs inherently possess diverse…

机器学习 · 计算机科学 2025-06-23 Jongmin Park , Seunghoon Han , Won-Yong Shin , Sungsu Lim

Graph Neural Networks (GNN) have shown remarkable performance in different tasks. However, there are a few studies about GNN on recommender systems. GCN as a type of GNNs can extract high-quality embeddings for different entities in a…

信息检索 · 计算机科学 2022-01-17 Taher Hekmatfar , Saman Haratizadeh , Parsa Razban , Sama Goliaei

Graph representation learning has attracted lots of attention recently. Existing graph neural networks fed with the complete graph data are not scalable due to limited computation and memory costs. Thus, it remains a great challenge to…

机器学习 · 计算机科学 2020-11-24 Yizhu Jiao , Yun Xiong , Jiawei Zhang , Yao Zhang , Tianqi Zhang , Yangyong Zhu

Graph Neural Networks (GNNs), a generalization of deep neural networks on graph data have been widely used in various domains, ranging from drug discovery to recommender systems. However, GNNs on such applications are limited when there are…

机器学习 · 计算机科学 2021-11-09 Debmalya Mandal , Sourav Medya , Brian Uzzi , Charu Aggarwal

Information technology has spread widely, and extraordinarily large amounts of data have been made accessible to users, which has made it challenging to select data that are in accordance with user needs. For the resolution of the above…

信息检索 · 计算机科学 2020-08-05 Saman Forouzandeh , Mehrdad Rostami , Kamal Berahmand

Contrastive learning (CL) recently has spurred a fruitful line of research in the field of recommendation, since its ability to extract self-supervised signals from the raw data is well-aligned with recommender systems' needs for tackling…

信息检索 · 计算机科学 2022-05-10 Junliang Yu , Hongzhi Yin , Xin Xia , Tong Chen , Lizhen Cui , Quoc Viet Hung Nguyen

Node importance estimation (NIE) in heterogeneous knowledge graphs is a critical yet challenging task, essential for applications such as recommendation, knowledge reasoning, and question answering. Existing methods often rely on pairwise…

人工智能 · 计算机科学 2025-12-16 Jiawen Chen , Yanyan He , Qi Shao , Mengli Wei , Duxin Chen , Wenwu Yu , Yanlong Zhao

Recommendation systems, as widely implemented nowadays on various platforms, recommend relevant items to users based on their preferences. The classical methods which rely on user-item interaction matrices has limitations, especially in…

信息检索 · 计算机科学 2025-01-13 Guangyi Liu , Quanming Yao , Yongqi Zhang , Lei Chen