>Is there a JAVA API to the Wikidata Query Service interface? - go https://query.wikidata.org - select any example ( cats? ) + "Execute query" - select the *"</> Code"* - and select *"Java" *-> and check the generated Java code
> Can SPARQL be used to query a dump of Wikidata? maybe you can setup your own SPARQL service ( check http://wikiba.se/ ) > How to best make such queries (information search) in terms of query response time? for my use case - ( Geodata matching ) I have loaded the data to my database * I have downloaded wikidata JSON dump ( * https://www.wikidata.org/wiki/Wikidata:Database_download#JSON_dumps_(recommended) * https://dumps.wikimedia.org/wikidatawiki/entities/ * Filtered the JSON * And loaded only the relevant elements to the Postgres/PostGIS database. or you can load to CouchDB https://github.com/maxlath/import-wikidata-dump-to-couchdb ( or you can check the other tools here: https://www.wikidata.org/wiki/Wikidata:Tools/For_programmers ) but my use case is very special. Best, Imre Raveesh Meena <rave...@csc.kth.se> ezt írta (időpont: 2019. jan. 24., Cs, 9:17): > Hi, > > I have a set of specific querie that my programme shoukd make to Wikidata. > How to best make such queries (information search) in terms of query > response time? > > One approach that I am familar is to use APIs, such as Wikidata Toolkit > API <https://www.mediawiki.org/wiki/Wikidata_Toolkit>, to query documents > in Wiki and parse each document (and perhaps follow hyperlinks) for > obtaining the specific feature values. I have tested this, but the queries > could take seconds. Now there could be many factors responsible for this > such as internet connection, the scheme for parsing wikidata graph, etc. > > Another approach would be to use the Wikidata Query Service > <https://query.wikidata.org/> and SPARQL queries. This is also slow > sometimes. > > My questions: > > - Are there benchmarks on response time performance of Wikidata Query > Service <https://query.wikidata.org/> SPARQL queries? > - Is there a JAVA API to the Wikidata Query Service > <https://query.wikidata.org/> interface? > - Can SPARQL be used to query a dump of Wikidata? > > Thanks and regards > Raveesh > _______________________________________________ > Wikidata mailing list > Wikidata@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikidata >
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