Hello all,
The SPARQL endpoint we are running at
http://query.wikidata.org has several
measures in place in order to ensure it stays up and running and available
for everyone, for example the 30 sec query timeout. This is necessary but
also prevents some useful queries from being run. One way around this is
Linked Data Fragments. It allows for some of the query computation to be
done on the client-side instead of our server.
We have set this up now for testing and would appreciate your testing and
feedback. You can find out more about Linked Data Fragments
<http://linkeddatafragments.org/concept/> and documentation for our
installation
<https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual#Linked_Data_Fragments_endpoint>.
Also, you can see a demo of client-side SPARQL evaluation and LDF server
usage here:
http://ldfclient.wmflabs.org/
Please note - it's in no way a production service for anything, just a
proof-of-concept deployment of LDF client. If you like how it works, you
can get it from the source
<https://github.com/LinkedDataFragments/jQuery-Widget.js> and deploy it on
your own setup.
Feel free to ask Stas (Smalyshev (WMF)) for any further question!
--
Léa Lacroix
Community Communication Manager for Wikidata
Wikimedia Deutschland e.V.
Tempelhofer Ufer 23-24
10963 Berlin
www.wikimedia.de
Wikimedia Deutschland - Gesellschaft zur Förderung Freien Wissens e. V.
Eingetragen im Vereinsregister des Amtsgerichts Berlin-Charlottenburg unter
der Nummer 23855 Nz. Als gemeinnützig anerkannt durch das Finanzamt für
Körperschaften I Berlin, Steuernummer 27/029/42207.