A foundation for spatial data warehouses on the Semantic Web

作者：Gur Nurefsan^*; Pedersen Torben Bach; Zimanyi Esteban; Hose Katja

来源：Semantic Web, 2018, 9(5): 557-587.

DOI：10.3233/SW-170281

• Spatial OLAP
• spatial data
• multidimensional data
• data modelling
• RDF
• SPARQL

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.

• 出版日期2018