Gur, Nurefsan

Hose, Katja

Pedersen, Torben Bach

Zimányi, Esteban

English

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 anumber 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

A Foundation for Spatial Data Warehouses on the Semantic Web

https://vbn.aau.dk/ws/files/310303998/SWJ2017spatial.pdf

A Foundation for Spatial Data Warehouses on the Semantic Web

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