New subject: [Dbpedia-discussion] Fwd: Announcing the release of the Wikidata Query Service

8 Sep 2015

On 9/8/15 11:26 AM, Markus Kroetzsch wrote:
...

 On 08.09.2015 16:48, Kingsley Idehen wrote:
  On 9/8/15 8:56 AM, Markus Kroetzsch wrote:
  The Wikimedia Foundation has just announced its
official live query
 service, based on SPARQL. You can do many things with this, since the
 data is quite rich. Best start with some example queries, found at:

 https://www.mediawiki.org/wiki/Wikibase/Indexing/SPARQL_Query_Examples

 The data is based on the current content of Wikidata, so if you find
 an error or omission, you can directly edit it (I think there might be
 an update lag of about 1 min, depending on traffic). 
 Markus,

 Great news!

 A quick question, in regards to the excerpt above: can I use SPARQL
 query URLs against this service? In addition, can I use SPARQL FED along
 the following lines from other SPARQL Query service providers [1]:

 select * where {service <https://query.wikidata.org/> {select * where
 {?s a ?o} limit 10 } } 
 Yes, the UI we mostly advertise is not the plain SPARQL endpoint. What
 you want is https://query.wikidata.org/bigdata/namespace/wdq/sparql/

 Your queries are [1] (text [2]) then.

 Nonetheless, the recommended way to link to queries that users can
 then view and edit is to refer to https://query.wikidata.org like the
 examples do. Links to the plain endpoint query results (in various
 formats) should be included there. I think this is a known issue that
 will be fixed in due course.

 Markus

 [1]

http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=select+…

 [2]

http://linkeddata.uriburner.com/sparql?default-graph-uri=&qtxt=select+*…

Great!

One more thing, if you click on [1] and then click on the HTTP URIs in
the solution, none of them resolve (bar schema.org). Is this an
oversight re., Linked Data deployment?

Ideally, you want to have your SPARQL endpoint enable data exploration
via HTTP URIs in the query solution, re., Linked Data.

Examples:

[1] http://id.nlm.nih.gov/mesh/query -- NIH Query Service
[2] http://rdf.disgenet.org/sparql/ -- Disgenet Query Service
[3] http://dbpedia.org/sparql -- DBpedia (which let's you explore via
Class instances in the query solution).

Kingsley
...

 [1]

http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=%0D%0As…

 - Query

 [2]

http://linkeddata.uriburner.com/sparql?default-graph-uri=&qtxt=%0D%0Ase…

 -- Query Text in Editor

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Regards,

Kingsley Idehen	      
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OpenLink Software     
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Re: [Wikidata] [Dbpedia-discussion] Fwd: Announcing the release of the Wikidata Query Service