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In recommender systems, user-item interactions can be modeled as a bipartite graph, where user and item nodes are connected by undirected edges. This graph-based view has motivated the rapid adoption of graph neural networks (GNNs), which…

Recent advances in research have demonstrated the effectiveness of knowledge graphs (KG) in providing valuable external knowledge to improve recommendation systems (RS). A knowledge graph is capable of encoding high-order relations that…

Information Retrieval · Computer Science 2020-04-02 Yang Gao , Yi-Fan Li , Yu Lin , Hang Gao , Latifur Khan

We present graph attention networks (GATs), novel neural network architectures that operate on graph-structured data, leveraging masked self-attentional layers to address the shortcomings of prior methods based on graph convolutions or…

Machine Learning · Statistics 2018-02-06 Petar Veličković , Guillem Cucurull , Arantxa Casanova , Adriana Romero , Pietro Liò , Yoshua Bengio

Recommender systems often struggle with data sparsity and cold-start scenarios, limiting their ability to provide accurate suggestions for new or infrequent users. This paper presents a Graph Attention Network (GAT) based Collaborative…

Information Retrieval · Computer Science 2025-10-31 Danial Ebrat , Sepideh Ahmadian , Luis Rueda

The problem of session-based recommendation aims to predict user actions based on anonymous sessions. Previous methods model a session as a sequence and estimate user representations besides item representations to make recommendations.…

Information Retrieval · Computer Science 2019-08-14 Shu Wu , Yuyuan Tang , Yanqiao Zhu , Liang Wang , Xing Xie , Tieniu Tan

Graph representation learning (GRL) is a powerful technique for learning low-dimensional vector representation of high-dimensional and often sparse graphs. Most studies explore the structure and metadata associated with the graph using…

Machine Learning · Computer Science 2020-04-02 Zekarias T. Kefato , Sarunas Girdzijauskas

User-item interactions in recommendations can be naturally de-noted as a user-item bipartite graph. Given the success of graph neural networks (GNNs) in graph representation learning, GNN-based C methods have been proposed to advance…

Information Retrieval · Computer Science 2022-01-06 Yiqi Wang , Chaozhuo Li , Mingzheng Li , Wei Jin , Yuming Liu , Hao Sun , Xing Xie , Jiliang Tang

Fake news detection is a significant challenge in the digital age, which has become increasingly important with the proliferation of social media and online communication networks. Graph Neural Networks (GNN)-based methods have shown high…

Machine Learning · Computer Science 2025-02-12 Batool Lakzaei , Mostafa Haghir Chehreghani , Alireza Bagheri

Cascade prediction aims at modeling information diffusion in the network. Most previous methods concentrate on mining either structural or sequential features from the network and the propagation path. Recent efforts devoted to combining…

Machine Learning · Computer Science 2021-12-08 Yansong Wang , Xiaomeng Wang , Tao Jia

The remarkable progress of network embedding has led to state-of-the-art algorithms in recommendation. However, the sparsity of user-item interactions (i.e., explicit preferences) on websites remains a big challenge for predicting users'…

Information Retrieval · Computer Science 2019-07-30 Jun Zhao , Zhou Zhou , Ziyu Guan , Wei Zhao , Wei Ning , Guang Qiu , Xiaofei He

Capturing the temporal dynamics of user preferences over items is important for recommendation. Existing methods mainly assume that all time steps in user-item interaction history are equally relevant to recommendation, which however does…

Information Retrieval · Computer Science 2017-09-08 Wenjie Pei , Jie Yang , Zhu Sun , Jie Zhang , Alessandro Bozzon , David M. J. Tax

Ride-hailing demand prediction is an essential task in spatial-temporal data mining. Accurate Ride-hailing demand prediction can help to pre-allocate resources, improve vehicle utilization and user experiences. Graph Convolutional Networks…

Machine Learning · Computer Science 2022-04-19 Weiguo Pian , Yingbo Wu , Xiangmou Qu , Junpeng Cai , Ziyi Kou

Graph neural networks (GNNs) have brought revolutionary advancements to the field of link prediction (LP), providing powerful tools for mining potential relationships in graphs. However, existing methods face challenges when dealing with…

Machine Learning · Computer Science 2025-12-30 Huashen Lu , Wensheng Gan , Guoting Chen , Zhichao Huang , Philip S. Yu

Session-based recommendation nowadays plays a vital role in many websites, which aims to predict users' actions based on anonymous sessions. There have emerged many studies that model a session as a sequence or a graph via investigating…

Information Retrieval · Computer Science 2020-05-20 Feng Yu , Yanqiao Zhu , Qiang Liu , Shu Wu , Liang Wang , Tieniu Tan

Collaborative Filtering (CF) is one of the most successful approaches for recommender systems. With the emergence of online social networks, social recommendation has become a popular research direction. Most of these social recommendation…

Information Retrieval · Computer Science 2019-07-12 Le Wu , Peijie Sun , Richang Hong , Yanjie Fu , Xiting Wang , Meng Wang

Accurate user and item embedding learning is crucial for modern recommender systems. However, most existing recommendation techniques have thus far focused on modeling users' preferences over singular type of user-item interactions. Many…

Information Retrieval · Computer Science 2021-10-11 Lianghao Xia , Chao Huang , Yong Xu , Peng Dai , Xiyue Zhang , Hongsheng Yang , Jian Pei , Liefeng Bo

Graph Neural Networks (GNNs) have achieved great success in processing graph data by extracting and propagating structure-aware features. Existing GNN research designs various propagation schemes to guide the aggregation of neighbor…

Machine Learning · Computer Science 2021-12-03 Jun Hu , Shengsheng Qian , Quan Fang , Changsheng Xu

Machine learning (ML) methods have gained increasing popularity in exploring and developing new materials. More specifically, graph neural network (GNN) has been applied in predicting material properties. In this work, we develop a novel…

Computational Physics · Physics 2020-08-18 Steph-Yves Louis , Yong Zhao , Alireza Nasiri , Xiran Wong , Yuqi Song , Fei Liu , Jianjun Hu

The rapid expansion of the fashion industry and the growing variety of products have made it increasingly challenging for users to identify compatible items on e-commerce platforms. Effective fashion recommendation systems are therefore…

Machine Learning · Computer Science 2025-08-21 Sajjad Saed , Babak Teimourpour

In session-based recommender systems, predictions are based on the user's preceding behavior in the session. State-of-the-art sequential recommendation algorithms either use graph neural networks to model sessions in a graph or leverage the…

Information Retrieval · Computer Science 2025-03-13 Andreas Peintner , Marta Moscati , Emilia Parada-Cabaleiro , Markus Schedl , Eva Zangerle