Wikidata: Difference between revisions

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    '''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]].
    #REDIRECT [[Knowledge graphs#Wikidata]]
     
    The software developed is known as the '''[[Wikibase]]''' 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
    * [[SPARQL]] [https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries Wikidata advice on how to query their endpoint] https://query.wikidata.org/
    * [[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]
     
     
    '''More info'''
    * [[m:Wikidata|Metawiki on Wikidata]]
    * [[w:Wikidata|Wikipedia article on Wikidata]]
    * [[w:Wikipedia:Wikidata|Wikipedia advice on Wikidata issues]]
     
    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>
     
     
    == 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

    Latest revision as of 19:22, 16 February 2019