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Knowledge graphs contain rich knowledge about various entities and the relational information among them, while temporal knowledge graphs (TKGs) describe and model the interactions of the entities over time. In this context, automatic…

机器学习 · 计算机科学 2022-12-14 Zifeng Ding , Yunpu Ma , Bailan He , Volker Tresp

Modeling time-evolving knowledge graphs (KGs) has recently gained increasing interest. Here, graph representation learning has become the dominant paradigm for link prediction on temporal KGs. However, the embedding-based approaches largely…

机器学习 · 计算机科学 2021-04-02 Zhen Han , Peng Chen , Yunpu Ma , Volker Tresp

Knowledge Graphs (KGs) provide a structured representation of knowledge but often suffer from challenges of incompleteness. To address this, link prediction or knowledge graph completion (KGC) aims to infer missing new facts based on…

机器学习 · 计算机科学 2025-01-03 Wenkai Tu , Guojia Wan , Zhengchun Shang , Bo Du

There has been an increasing interest in inferring future links on temporal knowledge graphs (KG). While links on temporal KGs vary continuously over time, the existing approaches model the temporal KGs in discrete state spaces. To this…

机器学习 · 计算机科学 2022-06-03 Zhen Han , Zifeng Ding , Yunpu Ma , Yujia Gu , Volker Tresp

Knowledge graphs are used to represent relational information in terms of triples. To enable learning about domains, embedding models, such as tensor factorization models, can be used to make predictions of new triples. Often there is…

机器学习 · 计算机科学 2018-12-11 Bahare Fatemi , Siamak Ravanbakhsh , David Poole

Reasoning over temporal knowledge graphs (TKGs) is fundamental to improving the efficiency and reliability of intelligent decision-making systems and has become a key technological foundation for future artificial intelligence applications.…

计算与语言 · 计算机科学 2026-01-05 Wang Xing , Wei Song , Siyu Lin , Chen Wu , Zhesi Li , Man Wang

In intelligent transportation systems, traffic data imputation, estimating the missing value from partially observed data is an inevitable and challenging task. Previous studies have not fully considered traffic data's multidimensionality…

机器学习 · 统计学 2023-11-01 Wenwu Gong , Zhejun Huang , Lili Yang

Knowledge graphs link entities through relations to provide a structured representation of real world facts. However, they are often incomplete, because they are based on only a small fraction of all plausible facts. The task of knowledge…

机器学习 · 计算机科学 2021-04-19 Shashank Sonkar , Arzoo Katiyar , Richard G. Baraniuk

Knowledge graphs (KGs) of real-world facts about entities and their relationships are useful resources for a variety of natural language processing tasks. However, because knowledge graphs are typically incomplete, it is useful to perform…

计算与语言 · 计算机科学 2020-10-28 Dat Quoc Nguyen

Tucker decomposition has been widely used in a variety of applications to obtain latent factors of tensor data. In these applications, a common need is to compute Tucker decomposition for a given time range. Furthermore, real-world tensor…

数据结构与算法 · 计算机科学 2025-01-14 Ruizhong Qiu , Jun-Gi Jang , Xiao Lin , Lihui Liu , Hanghang Tong

Temporal knowledge graph completion (TKGC) aims to fill in missing facts within a given temporal knowledge graph at a specific time. Existing methods, operating in real or complex spaces, have demonstrated promising performance in this…

机器学习 · 计算机科学 2024-03-06 Li Cai , Xin Mao , Zhihong Wang , Shangqing Zhao , Yuhao Zhou , Changxu Wu , Man Lan

Temporal Knowledge Graph (TKG) Forecasting aims at predicting links in Knowledge Graphs for future timesteps based on a history of Knowledge Graphs. To this day, standardized evaluation protocols and rigorous comparison across TKG models…

Accurate traffic prediction is crucial to the guidance and management of urban traffics. However, most of the existing traffic prediction models do not consider the computational burden and memory space when they capture spatial-temporal…

机器学习 · 计算机科学 2021-03-11 Xuran Xu , Tong Zhang , Chunyan Xu , Zhen Cui , Jian Yang

Knowledge Graph Completion is a task of expanding the knowledge graph/base through estimating possible entities, or proper nouns, that can be connected using a set of predefined relations, or verb/predicates describing interconnections of…

计算与语言 · 计算机科学 2021-01-25 Tong Chen , Sirou Zhu , Yiming Wen , Zhaomin Zheng

Temporal knowledge graph reasoning (TKGR) is increasingly gaining attention for its ability to extrapolate new events from historical data, thereby enriching the inherently incomplete temporal knowledge graphs. Existing graph-based…

机器学习 · 计算机科学 2025-01-27 Jinze Sun , Yongpan Sheng , Lirong He , Yongbin Qin , Ming Liu , Tao Jia

In the last few years, the solution to Knowledge Graph (KG) completion via learning embeddings of entities and relations has attracted a surge of interest. Temporal KGs(TKGs) extend traditional Knowledge Graphs (KGs) by associating static…

人工智能 · 计算机科学 2023-02-14 Zhongwu Chen , Chengjin Xu , Fenglong Su , Zhen Huang , You Dou

We consider the problem of tensor completion with graphs serving as side information to represent interrelationships among variables. Existing approaches suffer from several limitations: (1) they are often task-specific and lack generality…

机器学习 · 计算机科学 2026-03-17 Kaidong Wang , Qianxin Yi , Yao Wang , Xiuwu Liao , Shaojie Tang , Can Yang

Reasoning in a temporal knowledge graph (TKG) is a critical task for information retrieval and semantic search. It is particularly challenging when the TKG is updated frequently. The model has to adapt to changes in the TKG for efficient…

人工智能 · 计算机科学 2021-05-11 Jiapeng Wu , Yishi Xu , Yingxue Zhang , Chen Ma , Mark Coates , Jackie Chi Kit Cheung

How can we perform knowledge reasoning over temporal knowledge graphs (TKGs)? TKGs represent facts about entities and their relations, where each fact is associated with a timestamp. Reasoning over TKGs, i.e., inferring new facts from…

机器学习 · 计算机科学 2022-02-17 Namyong Park , Fuchen Liu , Purvanshi Mehta , Dana Cristofor , Christos Faloutsos , Yuxiao Dong

Conventional static knowledge graphs model entities in relational data as nodes, connected by edges of specific relation types. However, information and knowledge evolve continuously, and temporal dynamics emerge, which are expected to…

机器学习 · 计算机科学 2022-03-10 Yushan Liu , Yunpu Ma , Marcel Hildebrandt , Mitchell Joblin , Volker Tresp