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In the information explosion era, recommender systems (RSs) are widely studied and applied to discover user-preferred information. A RS performs poorly when suffering from the cold-start issue, which can be alleviated if incorporating…

Machine Learning · Computer Science 2021-08-27 Yu Wang , Zhiwei Liu , Ziwei Fan , Lichao Sun , Philip S. Yu

Deep neural networks (DNNs) have been widely employed in recommender systems including incorporating attention mechanism for performance improvement. However, most of existing attention-based models only apply item-level attention on user…

Information Retrieval · Computer Science 2020-06-20 Deqing Yang , Zengcun Song , Lvxin Xue , Yanghua Xiao

Knowledge graph (KG), which contains rich side information, becomes an essential part to boost the recommendation performance and improve its explainability. However, existing knowledge-aware recommendation methods directly perform…

Information Retrieval · Computer Science 2023-05-01 Xinjun Zhu , Yuntao Du , Yuren Mao , Lu Chen , Yujia Hu , Yunjun Gao

Personalized recommender systems play a crucial role in direct marketing, particularly in financial services, where delivering relevant content can enhance customer engagement and promote informed decision-making. This study explores…

Information Retrieval · Computer Science 2025-02-25 Ghanshyam Verma , Shovon Sengupta , Simon Simanta , Huan Chen , Janos A. Perge , Devishree Pillai , John P. McCrae , Paul Buitelaar

The cold start problem in recommender systems is a long-standing challenge, which requires recommending to new users (items) based on attributes without any historical interaction records. In these recommendation systems, warm users (items)…

Information Retrieval · Computer Science 2021-06-01 Shuai Wang , Kun Zhang , Le Wu , Haiping Ma , Richang Hong , Meng Wang

Incorporating knowledge graph into recommender systems has attracted increasing attention in recent years. By exploring the interlinks within a knowledge graph, the connectivity between users and items can be discovered as paths, which…

Information Retrieval · Computer Science 2018-11-13 Xiang Wang , Dingxian Wang , Canran Xu , Xiangnan He , Yixin Cao , Tat-Seng Chua

The recent integration of Graph Neural Networks (GNNs) into recommendation has led to a novel family of Collaborative Filtering (CF) approaches, namely Graph Collaborative Filtering (GCF). Following the same GNNs wave, recommender systems…

A Knowledge Graph (KG) is the directed graphical representation of entities and relations in the real world. KG can be applied in diverse Natural Language Processing (NLP) tasks where knowledge is required. The need to scale up and complete…

Computation and Language · Computer Science 2024-04-19 Xincan Feng , Zhi Qu , Yuchang Cheng , Taro Watanabe , Nobuhiro Yugami

Knowledge graph (KG), integrating complex information and containing rich semantics, is widely considered as side information to enhance the recommendation systems. However, most of the existing KG-based methods concentrate on encoding the…

Information Retrieval · Computer Science 2022-04-28 Xiaoming Liu , Shaocong Wu , Zhaohan Zhang , Chao Shen

While deep-learning-enabled recommender systems demonstrate strong performance benchmarks, many struggle to adapt effectively in real-world environments due to limited use of user-item relationship data and insufficient transparency in…

Machine Learning · Computer Science 2025-01-09 Dong Hyun Jeon , Wenbo Sun , Houbing Herbert Song , Dongfang Liu , Velasquez Alvaro , Yixin Chloe Xie , Shuteng Niu

To solve the information explosion problem and enhance user experience in various online applications, recommender systems have been developed to model users preferences. Although numerous efforts have been made toward more personalized…

Information Retrieval · Computer Science 2020-03-03 Qingyu Guo , Fuzhen Zhuang , Chuan Qin , Hengshu Zhu , Xing Xie , Hui Xiong , Qing He

Knowledge graph (KG) inference aims to address the natural incompleteness of KGs, including rule learning-based and KG embedding (KGE) models. However, the rule learning-based models suffer from low efficiency and generalization while KGE…

Artificial Intelligence · Computer Science 2022-08-23 Guanglin Niu , Bo Li , Yongfei Zhang , Shiliang Pu

Recommendation models utilizing unique identities (IDs) to represent distinct users and items have dominated the recommender systems literature for over a decade. Since multi-modal content of items (e.g., texts and images) and knowledge…

Information Retrieval · Computer Science 2024-10-11 Hulingxiao He , Xiangteng He , Yuxin Peng , Zifei Shan , Xin Su

Knowledge graph (KG) plays an increasingly important role in recommender systems. A recent technical trend is to develop end-to-end models founded on graph neural networks (GNNs). However, existing GNN-based models are coarse-grained in…

Information Retrieval · Computer Science 2021-02-16 Xiang Wang , Tinglin Huang , Dingxian Wang , Yancheng Yuan , Zhenguang Liu , Xiangnan He , Tat-Seng Chua

Human action recognition from skeletal data is a hot research topic and important in many open domain applications of computer vision, thanks to recently introduced 3D sensors. In the literature, naive methods simply transfer off-the-shelf…

Computer Vision and Pattern Recognition · Computer Science 2017-08-04 Jacopo Cavazza , Pietro Morerio , Vittorio Murino

The traditional recommendation systems mainly use offline user data to train offline models, and then recommend items for online users, thus suffering from the unreliable estimation of user preferences based on sparse and noisy historical…

Information Retrieval · Computer Science 2021-10-14 Mengyuan Zhao , Xiaowen Huang , Lixi Zhu , Jitao Sang , Jian Yu

Graph Neural Network (GNN)-based models have become the mainstream approach for recommender systems. Despite the effectiveness, they are still suffering from the cold-start problem, i.e., recommend for few-interaction items. Existing…

Information Retrieval · Computer Science 2023-08-08 Taichi Liu , Chen Gao , Zhenyu Wang , Dong Li , Jianye Hao , Depeng Jin , Yong Li

Explanations accompanied by a recommendation can assist users in understanding the decision made by recommendation systems, which in turn increases a user's confidence and trust in the system. Recently, research has focused on generating…

Computation and Language · Computer Science 2023-08-31 Anthony Colas , Jun Araki , Zhengyu Zhou , Bingqing Wang , Zhe Feng

We address the problem of learning vector representations for entities and relations in Knowledge Graphs (KGs) for Knowledge Base Completion (KBC). This problem has received significant attention in the past few years and multiple methods…

Artificial Intelligence · Computer Science 2018-01-09 Srinivas Ravishankar , Chandrahas , Partha Pratim Talukdar

Graph Neural Networks (GNNs) have substantially advanced the field of recommender systems. However, despite the creation of more than a thousand knowledge graphs (KGs) under the W3C standard RDF, their rich semantic information has not yet…

Information Retrieval · Computer Science 2025-06-11 Michael Färber , David Lamprecht , Yuni Susanti