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Knowledge graphs (KGs) serve as powerful tools for organizing and representing structured knowledge. While their utility is widely recognized, challenges persist in their automation and completeness. Despite efforts in automation and the…

人工智能 · 计算机科学 2024-05-07 Mutahira Khalid , Raihana Rahman , Asim Abbas , Sushama Kumari , Iram Wajahat , Syed Ahmad Chan Bukhari

Knowledge Graphs (KGs) have shown great success in recommendation. This is attributed to the rich attribute information contained in KG to improve item and user representations as side information. However, existing knowledge-aware methods…

信息检索 · 计算机科学 2021-12-20 Zepeng Huai , Jianhua Tao , Feihu Che , Guohua Yang , Dawei Zhang

Knowledge-based recommendation models effectively alleviate the data sparsity issue leveraging the side information in the knowledge graph, and have achieved considerable performance. Nevertheless, the knowledge graphs used in previous…

信息检索 · 计算机科学 2024-03-28 Shenghao Yang , Weizhi Ma , Peijie Sun , Min Zhang , Qingyao Ai , Yiqun Liu , Mingchen Cai

We introduce ManifoldMind, a probabilistic geometric recommender system for exploratory reasoning over semantic hierarchies in hyperbolic space. Unlike prior methods with fixed curvature and rigid embeddings, ManifoldMind represents users,…

信息检索 · 计算机科学 2025-07-04 Anoushka Harit , Zhongtian Sun , Suncica Hadzidedic

Existing research usually utilizes side information such as social network or item attributes to improve the performance of collaborative filtering-based recommender systems. In this paper, the knowledge graph with user perception is used…

信息检索 · 计算机科学 2022-10-10 Yuyao Zeng , Junping Du , Zhe Xue , Ang Li

The main objective of Knowledge Graph (KG) embeddings is to learn low-dimensional representations of entities and relations, enabling the prediction of missing facts. A significant challenge in achieving better KG embeddings lies in…

计算与语言 · 计算机科学 2024-02-06 Yihua Zhu , Hidetoshi Shimodaira

Knowledge graphs (KGs) play a key role in promoting various multimedia and AI applications. However, with the explosive growth of multi-modal information, traditional knowledge graph completion (KGC) models cannot be directly applied. This…

多媒体 · 计算机科学 2025-05-29 Linyu Li , Zhi Jin , Yichi Zhang , Dongming Jin , Chengfeng Dou , Yuanpeng He , Xuan Zhang , Haiyan Zhao

Knowledge Graphs (KGs) have shown to be very important for applications such as personal assistants, question-answering systems, and search engines. Therefore, it is crucial to ensure their high quality. However, KGs inevitably contain…

数据库 · 计算机科学 2022-08-18 Elwin Huaman , Dieter Fensel

Recently, a considerable literature has grown up around the theme of Graph Convolutional Network (GCN). How to effectively leverage the rich structural information in complex graphs, such as knowledge graphs with heterogeneous types of…

机器学习 · 计算机科学 2021-04-26 Donghan Yu , Yiming Yang , Ruohong Zhang , Yuexin Wu

Knowledge graphs (KGs) have gained prominence for their ability to learn representations for uni-relational facts. Recently, research has focused on modeling hyper-relational facts, which move beyond the restriction of uni-relational facts…

机器学习 · 计算机科学 2022-08-31 Harry Shomer , Wei Jin , Juanhui Li , Yao Ma , Jiliang Tang

Federated graph learning (FGL) has emerged as a promising paradigm for collaborative graph representation learning, enabling multiple parties to jointly train models while preserving data privacy. However, most existing approaches assume…

机器学习 · 计算机科学 2026-01-01 Zhengyu Wu , Guang Zeng , Huilin Lai , Daohan Su , Jishuo Jia , Yinlin Zhu , Xunkai Li , Rong-Hua Li , Guoren Wang , Chenghu Zhou

Knowledge Graphs (KG) are the backbone of many data-intensive applications since they can represent data coupled with its meaning and context. Aligning KGs across different domains and providers is necessary to afford a fuller and…

人工智能 · 计算机科学 2023-10-12 Pedro Giesteira Cotovio , Ernesto Jimenez-Ruiz , Catia Pesquita

Representing graphs as sets of node embeddings in certain curved Riemannian manifolds has recently gained momentum in machine learning due to their desirable geometric inductive biases, e.g., hierarchical structures benefit from hyperbolic…

机器学习 · 计算机科学 2020-06-09 Calin Cruceru , Gary Bécigneul , Octavian-Eugen Ganea

This paper presents a novel knowledge-informed graph neural planner (KG-Planner) to address the challenge of efficiently planning collision-free motions for robots in high-dimensional spaces, considering both static and dynamic environments…

机器人学 · 计算机科学 2024-05-14 Wansong Liu , Kareem Eltouny , Sibo Tian , Xiao Liang , Minghui Zheng

The field of Recommender Systems (RecSys) has been extensively studied to enhance accuracy by leveraging users' historical interactions. Nonetheless, this persistent pursuit of accuracy frequently engenders diminished diversity, culminating…

信息检索 · 计算机科学 2024-04-23 Xiaolong Liu , Liangwei Yang , Zhiwei Liu , Mingdai Yang , Chen Wang , Hao Peng , Philip S. Yu

Multimodal knowledge graph link prediction aims to improve the accuracy and efficiency of link prediction tasks for multimodal data. However, for complex multimodal information and sparse training data, it is usually difficult to achieve…

人工智能 · 计算机科学 2023-01-12 Yilin Wen , Biao Luo , Yuqian Zhao

Knowledge representation learning has been commonly adopted to incorporate knowledge graph (KG) into various online services. Although existing knowledge representation learning methods have achieved considerable performance improvement,…

机器学习 · 计算机科学 2022-05-18 Binbin Hu , Zhiyang Hu , Zhiqiang Zhang , Jun Zhou , Chuan Shi

In contrast to large text corpora, knowledge graphs (KG) provide dense and structured representations of factual information. This makes them attractive for systems that supplement or ground the knowledge found in pre-trained language…

计算与语言 · 计算机科学 2023-06-06 Sondre Wold , Lilja Øvrelid , Erik Velldal

Scene graph representations enable structured visual understanding by modeling objects and their relationships, and have been widely used for multiview and 3D scene reasoning. Existing methods such as MSG learn scene graph embeddings in…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Liyang Wang , Zeyu Zhang , Hao Tang

We present a framework to generate and evaluate thematic recommendations based on multilayer network representations of knowledge graphs (KGs). In this representation, each layer encodes a different type of relationship in the KG, and…

信息检索 · 计算机科学 2021-05-13 Mariano Beguerisse-Díaz , Dimitrios Korkinof , Till Hoffmann