On 23.06.2016 07:13, Stas Malyshev wrote: There is one for the initial (prototype) dumps [1], file wikidata-properties.nt.gz. Adjusting this to the RDF encoding used in the Wikidata SPARQL Service would be doable (mostly some URIs have changed, but there is a simple mapping). With the small number of properties, it should also be easy to get much of their data with a SPARQL query (depending on what you need). Does BlazeGraph support CONSTRUCT? In fact, depending on what you want to do with the data, you may find other formats that list all properties useful, esp. the property list used in SQID [2]. You can download the JSON file with the underlying data (see the link in the README of the github project for SQID). Both our RDF dumps and the SQID file are generated using Wikidata Toolkit. You could use this too if you want custom exports that are not easy to get through the SPARQL endpoint. Markus [1] Most recent one is already two montsh old though; there seems to be a bug with the generator: http://tools.wmflabs.org/wikidata-exports/rdf/index.php?content=dump_downlo… [2] http://tools.wmflabs.org/sqid/#/browse?type=properties -- Markus Kroetzsch Faculty of Computer Science Technische Universität Dresden +49 351 463 38486 http://korrekt.org/

Thanks Stas and Markus. I'm interested in computing various stats about Wikidata. For example, I want to compute the degree of interlinking between Wikidata and external databases, per entity type, per databases, etc. So I need a way to know which properties have an  external identifier as range, along with the name of the external database they point to. For example P345 is an external identifier to IMDB ; P2639 is an external identifier to Filmportal, etc. Hence my question about machine-readable Wikidata schemas and data. Parsing the data is a no brainer since they are available as JSON and RDF. I already use the JSON dump since the RDF dump is marked as beta. However, I couldn't find a machine readable version of the Wikidata schemas, with a formal description of the classes, properties and how they relate to each others. I'd like to avoid scraping and/or hard-coding things myself. Cheers.Nicolas. --Nicolas TorzecYahoo Labs. On Thursday, June 23, 2016 11:51 AM, Stas Malyshev <smalyshev(a)wikimedia.org> wrote: Hi! Yes. For example, this one: http://preview.tinyurl.com/hk5sudz should produce a list of property definitions for WikibaseItem type. These are already part of the dump, but they work as an illustration. Right now there's no way to get data into TTL RDF serialization (maybe in the future) but XML one works: https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual#Supported… -- Stas Malyshev smalyshev(a)wikimedia.org _______________________________________________ Wikidata mailing list Wikidata(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata