Diego Calvanese
Ontopic s.r.l.
Diego Calvanese  is a full professor at the KRDB Research Centre for Knowledge and Data, Faculty of Computer Science at the Free University of Bozen-Bolzano, and visiting professor at Umeå University. He is well known for his scientific contributions in knowledge representation and reasoning in AI, and database theory. Diego is one of the inventors of the VKG approach and the initiator of Ontop.

2021 Workshops and Tutorials: Integrating Data through Virtual Knowledge Graphs with Ontopic

Recently, knowledge graphs have been successfully deployed to overcome the typical difficulties in accessing and integrating data stored in different kinds of sources. In particular, in the Virtual Knowledge Graph (VKG) approach, data is presented in the form of a graph, which is mapped to the underlying data sources, and query answering is based on advanced query transformation techniques. In this tutorial we illustrate the principles underlying the VKG approach, providing an overview of well-established algorithms and techniques, and we discuss relevant use-cases using VKGs. We also provide a step-by-step hands-on session, where participants can experiment on their own with the discussed technologies using the open-source VKG system Ontop (https://ontop-vkg.org/) and other open-source tools.