Re: Announcing the release of the Wikidata Query Service

Do you plan to add this endpoint on datahub?
That would make it monitored by Sparqles and indexed by search.datao.net

Envoyé de mon iPhone

Le 8 sept. 2015 à 18:09, Markus Kroetzsch <markus.kroetzsch@tu-dresden.de> a écrit :

> On 08.09.2015 17:52, Miguel wrote:
>> Great news!
>> 
>> I see that the UI uses a public (and CORS-enabled)SPARQL endpoint
>> available at
>> https://query.wikidata.org/bigdata/namespace/wdq/sparql
>> 
>> I don't see this SPARQL endpoint documented as such, but I hope it will
>> be kept publicly available.
> 
> Indeed, I should have given some more documentation -- details in this email. The endpoint you found is documented here:
> 
> https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual
> 
> If it should ever change, I am sure WMF can set up a redirect to keep links working.
> 
> I also should have pointed explicitly to the list of current example queries. You can do some very interesting things with this data (and with SPARQL, of course ;-), but some may not be obvious if you are not familiar with our data:
> 
> https://www.mediawiki.org/wiki/Wikibase/Indexing/SPARQL_Query_Examples
> 
> Short guideline for getting started with simple queries:
> 
> * Use wd:Q1234 (<http://www.wikidata.org/entity/Q1234>) to refer to an item ("data page") on Wikidata. You can find an item id, e.g., by browsing Wikipedia and clicking the link "Wikidata item" on the left.
> 
> * Use wdt:P1234 (<http://www.wikidata.org/prop/direct/P1234>) to refer to *simplified* direct versions of Wikidata properties. Property ids can be searched for on Wikidata, or browsed for by clicking property names on any item page.
> 
> "Simplified" means that there is a direct connection from subject to property value -- no references (provenance), no qualifiers (statement annotations); that the value is simplified (e.g. no precision information for numbers); and that only data for the statements of the highest rank will be included (e.g., only current population numbers, no historic ones).
> 
> * For how to access the full data with all details, see the example query for "largest cities with a female mayor" and read the documentation:
> 
> https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format
> 
> It also helps to look at some Wikidata pages to get an idea of what is there. The showcase items give a good overview:
> 
> https://www.wikidata.org/wiki/Wikidata:Showcase_items
> 
> Cheers,
> 
> Markus
> 
> 
>> 
>> 
>> Il giorno mar 8 set 2015 alle ore 05:28 Olivier Rossel
>> <olivier.rossel@gmail.com <mailto:olivier.rossel@gmail.com>> ha scritto:
>> 
>>    Brillant!!!
>> 
>>    Envoyé de mon iPhone
>> 
>>    Le 8 sept. 2015 à 10:03, Markus Kroetzsch
>>    <markus.kroetzsch@tu-dresden.de
>>    <mailto:markus.kroetzsch@tu-dresden.de>> a écrit :
>> 
>>     > Dear SPARQLers,
>>     >
>>     > The Wikimedia Foundation has just announced its first official
>>    live query service for Wikidata, based on SPARQL.
>>     >
>>     > Cheers,
>>     >
>>     > Markus
>>     >
>>     >
>>     > -------- Forwarded Message --------
>>     > Subject:    [Wikidata] Announcing the release of the Wikidata
>>    Query Service
>>     > Date:    Mon, 7 Sep 2015 15:29:02 -0700
>>     > From:    Dan Garry <dgarry@wikimedia.org
>>    <mailto:dgarry@wikimedia.org>>
>>     > Reply-To:    Discussion list for the Wikidata project.
>>     > <wikidata@lists.wikimedia.org <mailto:wikidata@lists.wikimedia.org>>
>>     > To: wikidata-l@lists.wikimedia.org
>>    <mailto:wikidata-l@lists.wikimedia.org>
>>     >
>>     >
>>     >
>>     > The Discovery Department at the Wikimedia Foundation is pleased to
>>     > announce the release of the Wikidata Query Service
>>     > <https://www.mediawiki.org/wiki/Wikidata_query_service>! You can find
>>     > the interface for the service at https://query.wikidata.org.
>>     >
>>     > The Wikidata Query Service is designed to let users run queries
>>    on the
>>     > data contained in Wikidata. The service uses SPARQL
>>     > <https://en.wikipedia.org/wiki/SPARQL> as the query language. You can
>>     > see some example queries in the user manual
>>     > <https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual>.
>>     >
>>     > Right now, the service is still in beta. This means that our goal
>>     >
>>    <https://www.mediawiki.org/wiki/Wikimedia_Engineering/2015-16_Q2_Goals#Wikidata_Query_Service>
>>    is
>>     > to monitor of the service usage and collect feedback about what
>>    people
>>     > think should be next. To do that, we've created the Wikidata Query
>>     > Service dashboard <https://searchdata.wmflabs.org/wdqs/> to track
>>    usage
>>     > of the service, and we're in the process
>>     > <https://phabricator.wikimedia.org/T111403> of setting up a feedback
>>     > mechanism for users of the service. Once we've got monitored the
>>    usage
>>     > of the service for a while and got user feedback, we'll decide on
>>    what's
>>     > next for development of the service.
>>     >
>>     > If you have any feedback, suggestions, or comments, please do send an
>>     > email to the Discovery Department's public mailing list,
>>     > wikimedia-search@lists.wikimedia.org
>>    <mailto:wikimedia-search@lists.wikimedia.org>
>>     > <mailto:wikimedia-search@lists.wikimedia.org
>>    <mailto:wikimedia-search@lists.wikimedia.org>>.
>>     >
>>     > Thanks,
>>     > Dan
>>     >
>>     > --
>>     > Dan Garry
>>     > Lead Product Manager, Discovery
>>     > Wikimedia Foundation
>>     >
>>     >
>>     > <Attached Message Part>
> 
> -- 
> Markus Kroetzsch
> Faculty of Computer Science
> Technische Universität Dresden
> +49 351 463 38486
> http://korrekt.org/

Received on Tuesday, 8 September 2015 16:51:28 UTC