Virtual Knowledge Graphs:An Overview of Systems and Use Cases  

作　　者：Guohui Xiao Linfang Ding Benjamin Cogrel Diego Calvanese 

机构地区：[1]KRDB Research Centre for Knowledge and Data,Free University of Bozen-Bolzano,Bolzano 39100,Italy [2]Chair of Cartography,Technical University of Munich,Munich 80333,Germany

出　　处：《Data Intelligence》2019年第3期201-223,共23页数据智能（英文）

摘　　要：In this paper,we present the virtual knowledge graph(VKG)paradigm for data integration and access,also known in the literature as Ontology-based Data Access.Instead of structuring the integration layer as a collection of relational tables,the VKG paradigm replaces the rigid structure of tables with the flexibility of graphs that are kept virtual and embed domain knowledge.We explain the main notions of this paradigm,its tooling ecosystem and significant use cases in a wide range of applications.Finally,we discuss future research directions.

关 键 词：Virtual knowledge graph Ontology-based data access Data integration Data virtualization 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]