Virtual Knowledge Graphs: An Overview of Systems and Use Cases

作者：Guohui Xiao, Linfang Ding, Benjamin Cogrel, Diego Calvanese · 发表于：Data Intelligence · 年份：2019 · DOI：10.1162/dint_a_00011 · 被引用次数：141 · 研究领域：Semantic Web and Ontologies、Advanced Database Systems and Queries、Service-Oriented Architecture and Web Services

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.