This webinar provides an introduction to SPARQL, a query language for RDF. Users will gain hands on experience crafting queries, starting simply, but evolving in complexity. These queries will focus on coinage data in the SPARQL endpoint hosted by http://nomisma.org with numismatic concepts defined in a SKOS-based thesaurus and physical specimens from three major museum collections (American Numismatic Society, British Museum, and Münzkabinett of the Staatliche Museen zu Berlin) linked to these concepts. Results generated from these queries in the form of CSV may be imported directly into Google Fusion Tables for immediate visualization in the form of charts and maps. Links to all resources necessary to practice the queries covered are available online and referenced from the webinar presentation.
The webinar uses the following SPARQL constructs: SELECT, WHERE, LIMIT, ORDER BY (ASC), FILTER, DISTINCT, regex(), count(), lang(), langMatches().
Access to all SPARQL queries used in the webinar are available at http://numishare.blogspot.com/2015_05_01_archive.
Keywords: SPARQL syntax, filtering, sorting, OPTIONAL, UNION, geographic queries, visualization (statistics), Google Fusion Tables, visualization (map geolocations)
Author: Ethan Gruber
Date created: 2014-01-01 07:00:00.000
Time required: P1H00M
Educational use: instruction
Educational audience: professional
Interactivity type: expositive