On 23.06.2016 07:13, Stas Malyshev wrote:
Hi!
A quick search only returned those tables so far: https://www.wikidata.org/wiki/Wikidata:List_of_properties/all mailto:wikidata@lists.wikimedia.org
Any formal representation would work: OWL, etc.
There's basic OWL with Wikibase ontology here: http://wikiba.se/ontology-1.0.owl The properties can be found in the general dump ( https://dumps.wikimedia.org/wikidatawiki/entities/ ) described as outlined here:
https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Properties
There's no separate file, RDF, OWL or otherwise, with only properties, AFAIK.
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_downloa... [2] http://tools.wmflabs.org/sqid/#/browse?type=properties