Virtual Knowledge Graphs: An Overview of Systems and Use Cases

Guohui Xiao, Linfang Ding, Benjamin Cogrel, and Diego Calvanese

Data Intelligence. 1(3):201--223 2019.

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.

   title = "Virtual Knowledge Graphs:  An Overview of Systems and Use
   year = "2019",
   author = "Guohui Xiao and Linfang Ding and Benjamin Cogrel and Diego
   journal = "Data Intelligence",
   pages = "201--223",
   number = "3",
   volume = "1",
   doi = "10.1162/dint_a_00011",
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