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Št. zadetkov: 3
Ontology-based Data Access
Diego Calvanese
Video in druga učna gradiva
Oznake: computer science;semantic web;ontologies
In this tutorial we provide a comprehensive understanding of the problem of ontology-based data access, from both the theoretical and the practical points of view. We address several problems that are crucial in this context, such as expressiveness/efficiency tradeoff, query processing, impedanc ...
Leto: 2007 Vir: videolectures.net
Efficient Ontology-Based Data Integration with canonical IRIs
Diego Calvanese
Video in druga učna gradiva
Oznake: computer science;big data;semantic web
In this paper, we study how to efficiently integrate multiple relational databases using an ontology-based approach. In ontology-based data integration (OBDI) an ontology provides a coherent view of multiple databases, and SPARQL queries over the ontology are rewritten into (federated) SQL queries o ...
Leto: 2018 Vir: videolectures.net
Reasoning for Ontology Engineering and Usage
Ralf Möller , Anni-Yasmin Turhan , Matthew Horridge , Ulrike Sattler , Diego Calvanese , Giuseppe De Giacomo
Video in druga učna gradiva
Oznake: computer science;semantic web;owl - web ontology language;ontologies
We will provide a brief introduction to OWL, in fact OWL2, and the underlying Description Logic, clarifying the semantics and providing examples to help the understanding of this admittedly complex formalism. In particular, we will discuss common misunderstandings around OWL and OWL2, explain the op ...
Leto: 2008 Vir: videolectures.net
Št. zadetkov: 3
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