header

Ontop-Spatial: Ontop of Geospatial Databases

18 Pages Posted: 1 Jul 2019 First Look: Accepted

See all articles by Konstantina Bereta

Konstantina Bereta

National and Kapodistrian University of Athens - Department of Informatics and Telecommunications

Guohui Xiao

Free University of Bozen-Bolzano - KRDB Research Centre

Manolis Koubarakis

National and Kapodistrian University of Athens - Department of Informatics and Telecommunications

Abstract

In this paper, we propose an OBDA approach for accessing geospatial data stored in relational databases using the R2RML mappings and OGC standard GeoSPARQL. On the theoretical side, we provide a formalization of GeoSPARQL in terms of SPARQL entailment regime. For a practical query answering algorithm, we introduce an extension to the existing SPARQL-to-SQL translation method to support GeoSPARQL features. Our approach has been implemented in the system Ontop-spatial, an extension of the OBDA system Ontop for creating virtual geospatial RDF graphs on top of geospatial relational databases. We present an experimental evaluation of our system using and extending a state-of-the-art benchmark. To measure the performance of our system, we compare it to two state-of-the-art geospatial RDF stores – a free and open-source one, and a commercial one – and confirm its efficiency.

Keywords: Spatial Data, GeoSPARQL, Ontology-Based Data Access, Ontop-Spatial

Suggested Citation

Bereta, Konstantina and Xiao, Guohui and Koubarakis, Manolis, Ontop-Spatial: Ontop of Geospatial Databases (July 1, 2019). Available at SSRN: https://ssrn.com/abstract=3412809 or http://dx.doi.org/10.2139/ssrn.3412809

Konstantina Bereta (Contact Author)

National and Kapodistrian University of Athens - Department of Informatics and Telecommunications ( email )

Panepistimiopolis
Ilisia
Athens, GR15784
Greece

Guohui Xiao

Free University of Bozen-Bolzano - KRDB Research Centre ( email )

Italy

Manolis Koubarakis

National and Kapodistrian University of Athens - Department of Informatics and Telecommunications ( email )

Panepistimiopolis
Ilisia
Athens, GR15784
Greece

Register to save articles to
your library

Register

Paper statistics

Abstract Views
261
Downloads
33