A Foundation for Spatial Data Warehouses on the Semantic Web


Nurefsan Gur, Torben Bach Pedersen, Esteban Zimányi, Katja Hose

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Abstract

Large volumes of geospatial data are being published on the Semantic Web (SW), yielding a need for advanced analysis of such data. However, existing SW technologies only support advanced analytical concepts such as multidimensional (MD) data warehouses and Online Analytical Processing (OLAP) over non-spatial SW data. To remedy this need, this paper presents the QB4SOLAP vocabulary, which supports spatially enhanced MD data cubes over RDF data. The paper also defines a
number of Spatial OLAP (SOLAP) operators over QB4SOLAP cubes and provides algorithms for generating spatially extended SPARQL queries from the SOLAP operators. The proposals are validated by applying them to a realistic use case.
OriginalsprogEngelsk
TidsskriftSemantic Web
Vol/bind9
Udgave nummer5
Sider (fra-til)557-587
Antal sider30
ISSN1570-0844
DOI
StatusUdgivet - 2018

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