Bureaucrats, developer, Administrators
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Knowledge graphs: Difference between revisions
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* [[Semantic MediaWiki]] is system for inputting and querying semantic data within the MediaWiki and it is implemented as extension(s). | * [[Semantic MediaWiki]] is system for inputting and querying semantic data within the MediaWiki and it is implemented as extension(s). | ||
* [[Wikidata]] and the underlying [[Wikibase|Wikibase extensions]] | * [[Wikidata]] and the underlying [[Wikibase|Wikibase extensions]] | ||
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= Wikidata = | |||
'''[[w:Wikidata|Wikidata]]''' [http://wikidata.org (.org)] is a [[w:knowledge base|knowledge base]], an effort to store and serve structured data to [[Wikimedia]] wikis and to a more limited extent to other parties. Wikidata effort saw the daylight in [[2012]]. | |||
The underlying software is the '''[[Wikibase]]''' which consists of 2 [[Mediawiki]] extensions, the repository extension and the client extension. | |||
Wikibase allows [[interwiki]] links to be managed with Wikidata removing much contributor annoyanges, redundancy and error-proneness. | |||
Wikidata is obviously a main source of [[reference]] level data once it is technically possible for non-WMF wikis to access the data items. | |||
It can be accessed outside of WMF wikis with with | |||
* [[wikidata:Wikidata:SPARQL_query_service/queries|Wikidata advice on how to query]] [https://query.wikidata.org/ Wikidata's endpoint] using [[SPARQL]]. | |||
* [[mw:Wikidata Toolkit]] is a way for Java programs to access data in the Wikidata repository. | |||
* [https://rdflib.github.io/sparqlwrapper/ SPARQL Endpoint interface to Python] | |||
* [[wikidata:Wikidata:Database download|Wikidata offers its database for download]] | |||
Main entry point of any Wikidata item is a [[w:JSON|JSON]] dictionary, that has this form: | |||
<code>{“labels”: by-language dictionary | |||
“descriptions”: by-language dictionary | |||
“aliases”: by-language dictionary | |||
“claims”: list of property and values | |||
“sitelinks”: by-language dictionary}</code> | |||
== Useful information == | |||
* [[wikidata:Wikidata:Tools/External_tools|Wikidata's list of external tools that make use of Wikidata's knowledge]] | |||
'''More info''' | |||
* [[m:Wikidata|Metawiki on Wikidata]] | |||
* [[w:Wikipedia:Wikidata|Wikipedia advice on Wikidata issues]] | |||
== See also == | |||
* [[Database]] for a higher level view of what is going on with the databases | |||
* [[Semantic MediaWiki]] is system for inputting and querying semantic data within the MediaWiki and it is implemented as extension(s). | |||
* [[DBpedia]] the original structured data harvesting effort for the MediaWiki wikis | |||