wikidata

SPARQL full-text Wikipedia searching and Wikidata subclass inferencing

Wikipedia querying techniques inspired by a recent paper.

I found all kinds of interesting things in the article “Getting the Most out of Wikidata: Semantic Technology Usage in Wikipedia’s Knowledge Graph”(pdf) by Stanislav Malyshev of the Wikimedia Foundation and four co-authors from the Technical University of Dresden. I wanted to highlight two particular things that I will find useful in the future and then I’ll list a few more.

The Wikidata data model and your SPARQL queries

Reference works to get you taking advantage of the fancy parts quickly.

Last month I promised that I would dig further into the Wikidata data model, its mapping to RDF, and how we can take advantage of this with SPARQL queries. I had been trying to understand the structure of the data based on the RDF classes and properties I saw and the documentation that I could find, and some of the vocabulary discussing these issues confused me–for example, RDF is about describing resources, but I was seeing lots of references to entities, which can mean slightly different…