Querying Brussels Spatiotemporal Linked Open Data

Kevin Chentout and Alejandro Vaisman

Abstract. The “Open Semantic Cloud for Brussels” (OSCB) project aims at building a platform for linked open data for the Brussels region in Belgium, such that participants can easily publish their data, which can in turn be queried by end users using a web browser to access a SPARQL endpoint. If data are spatial and we want to show them on a map, we need to support this endpoint with an engine that can manage spatial data. For this we chose Strabon, an open source geospatial database management system that stores linked geospatial data expressed in the stRDF format (spatiotemporal RDF) and queries them using stSPARQL (spatiotemporal SPARQL), an extension to SPARQL 1.1. In this paper we show how the SPARQL endpoint is built and the kinds of queries it supports, also providing a wide variety of examples.

LNCS 8186, p. 378 ff.

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