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Wikidata, wikidata
Wikidata is a collaboratively edited knowledge base operated by the Wikimedia Foundation It is intended to provide a common source of data which can be used by Wikimedia projects such as Wikipedia, and by anyone else, under a public domain licence This is similar to the way Wikimedia Commons provides storage for media files and access to those files for all Wikimedia projects, and which are also freely available for reuse Wikidata is powered by the software Wikibase


  • 1 Concepts
  • 2 Development history
    • 21 Phase 1
    • 22 Phase 2
    • 23 Phase 3
  • 3 Reception
  • 4 Logo
  • 5 See also
  • 6 References
  • 7 Further reading
  • 8 External links


Screenshots Three statements from Wikidata's item on the planet Mars Values include links to other items and to Wikimedia Commons A layout of the four main components of a phase-1 Wikidata page: the label, description, aliases and interlanguage links A Wikipedia article's list of interlanguage links as they appeared in an edit box left and on the article's page right prior to Wikidata Each link in these lists is to an article that requires its own list of interlanguage links to the other articles; this is the information centralized by Wikidata
Click here to visit the Wikidata entry for the article featured The "Edit links" link takes the reader to Wikidata to edit interlanguage links

Wikidata is a document-oriented database, focused on items Each item represents a topic or an administrative page used to maintain Wikipedia and is identified by a unique number, prefixed with the letter Q—for example, the item for the topic Politics is Q7163 This enables the basic information required to identify the topic the item covers to be translated without favouring any language

Information is added to items by creating statements Statements take the form of key-value pairs, with each statement consisting of a property the key and a value linked to the property

This diagram shows the most important terms used in Wikidata

Development history

The creation of the project was funded by donations from the Allen Institute for Artificial Intelligence, the Gordon and Betty Moore Foundation, and Google, Inc, totaling €13 million Initial development of the project is being overseen by Wikimedia Deutschland and has been split into three phases:

  1. Centralising interlanguage links – links between Wikipedia articles about the same topic in different languages
  2. Providing a central place for infobox data for all Wikipedias
  3. Creating and updating list articles based on data in Wikidata

Phase 1

Wikidata was launched on 30 October 2012 and was the first new project of the Wikimedia Foundation since 2006 At this time, only the first phase was available This enabled items to be created and filled with basic information: a label – a name or title, aliases – alternative terms for the label, a description, and links to articles about the topic in all the various language editions of Wikipedia

Historically, a Wikipedia article would include a list of interlanguage links, being links to articles on the same topic in other editions of Wikipedia, if present Initially, Wikidata was a self-contained repository of interlanguage links No Wikipedia language editions were able to access Wikidata, so they needed to continue to maintain their own lists of interlanguage links On 14 January 2013, the Hungarian Wikipedia became the first to enable the provision of interlanguage links via Wikidata This functionality was extended to the Hebrew and Italian Wikipedias on 30 January, to the English Wikipedia on 13 February and to all other Wikipedias on 6 March After no consensus was reached over a proposal to restrict the removal of language links from the English Wikipedia, the power to delete them from the English Wikipedia was granted to automatic editors bots On 23 September 2013, phase 1 went live on Wikimedia Commons

Phase 2

The first aspects of the second phase were deployed on 4 February 2013, introducing statements to Wikidata entries The values were initially limited to two data types items and images on Wikimedia Commons, with more data types such as coordinates and dates to follow later The first new type, string, was deployed on 6 March

The ability of the various language editions of Wikipedia to access data added to Wikidata as part of phase two was rolled out progressively between 27 March and 25 April 2013

On 16 September 2015, Wikidata began allowing so-called arbitrary access, or access to properties of Wikidata items which were not directly connected to it For example, in the past the article about Berlin you could not access data about Germany, but with arbitrary access it could On 27 April 2016 arbitrary access was activated on Wikimedia Commons

Phase 3

Phase 3 will involve database querying and the creation of lists based on data stored on Wikidata As of October 2016 two tools for querying Wikidata Wikidata:List of queries were available: AutoList and PetScan, additionaly to a public SPARQL endpoint


There is concern that the project is being influenced by lobbying companies, PR professionals and search engine optimizers

According to Wikimedia statistics, half of the information in Wikidata is unsourced Another 30% is labeled as having come from Wikipedia, but with no indication as to which article


The bars on the logo contain the "WIKI" word encoded in Morse code

See also

  • Internet portal
  • BabelNet
  • DBpedia
  • Freebase
  • Semantic MediaWiki


  1. ^ "Wikidataorg Site Info" Alexa Internet Retrieved 2016-10-10 
  2. ^ a b Wikidata Archived at WebCite
  3. ^ "Data Revolution for Wikipedia" Wikimedia Deutschland March 30, 2012 Archived from the original on September 11, 2012 Retrieved September 11, 2012 
  4. ^ Wikibase
  5. ^ Dickinson, Boonsri March 30, 2012 "Paul Allen Invests In A Massive Project To Make Wikipedia Better" Business Insider Retrieved September 11, 2012 
  6. ^ Perez, Sarah March 30, 2012 "Wikipedia's Next Big Thing: Wikidata, A Machine-Readable, User-Editable Database Funded By Google, Paul Allen And Others" TechCrunch Archived from the original on September 11, 2012 Retrieved September 11, 2012 
  7. ^ a b https://metawikimediaorg/wiki/Wikidata
  8. ^ Pintscher, Lydia October 30, 2012 "wikidataorg is live with some caveats" wikidata-l Mailing list Retrieved November 3, 2012 
  9. ^ Roth, Matthew March 30, 2012 "The Wikipedia data revolution" Wikimedia Foundation Archived from the original on September 11, 2012 Retrieved September 11, 2012 
  10. ^ Pintscher, Lydia 14 January 2013 "First steps of Wikidata in the Hungarian Wikipedia" Wikimedia Deutschland Retrieved 17 December 2015 
  11. ^ Pintscher, Lydia "Wikidata coming to the next two Wikipedias" Wikimedia Deutschland Retrieved January 31, 2013 
  12. ^ Pintscher, Lydia 13 February 2013 "Wikidata live on the English Wikipedia" Wikimedia Deutschland Retrieved 15 February 2013 
  13. ^ Pintscher, Lydia 6 March 2013 "Wikidata now live on all Wikipedias" Wikimedia Deutschland Retrieved 8 March 2013 
  14. ^ "Wikidata ist für alle Wikipedien da" in German Golemde Retrieved 29 January 2014 
  15. ^ "Wikipedia talk:Wikidata interwiki RFC" March 29, 2013 Retrieved March 30, 2013 
  16. ^ Lydia, Pintscher 23 September 2013 "Wikidata is Here!" Commons:Village pump 
  17. ^ Pintscher, Lydia "Wikidata/Status updates/2013 03 01" Wikimedia Meta-Wiki Wikimedia Foundation Retrieved 3 March 2013 
  18. ^ Pintscher, Lydia 27 March 2013 "You can have all the data!" Wikimedia Deutschland Retrieved 28 March 2013 
  19. ^ "Wikidata goes live worldwide" The H 2013-04-25 Archived from the original on 3 January 2014 
  20. ^ Lydia, Pintscher 16 September 2015 "Wikidata: Access to data from arbitrary items is here" Wikipedia:Village pump technical Retrieved 30 August 2016 
  21. ^ Lydia, Pintscher 27 April 2016 "Wikidata support: arbitrary access is here" Commons:Village pump Retrieved 30 August 2016 
  22. ^ a b c Kolbe, Andrew December 8, 2015 "Unsourced, unreliable, and in your face forever: Wikidata, the future of online nonsense" The Register 
  23. ^ commons:File talk:Wikidata-logo-ensvg#Hybrid Retrieved 2016-10-06

Further reading

  • Denny Vrandečić, Markus Krötzsch: Wikidata: A Free Collaborative Knowledge Base Communications of the ACM ACM 2014 preprint
  • Claudia Müller-Birn, Benjamin Karran, Janette Lehmann, Markus Luczak-Rösch: Peer-production system or collaborative ontology development effort: What is Wikidata In, OpenSym 2015 - Conference on Open Collaboration, San Francisco, US, 19 - 21 Aug 2015 preprint

External links

  • Official website

wikidata, wikidata api, wikidata conference, wikidata external tools, wikidata game, wikidata property, wikidata query service, wikidata sandbox, wikidata sparql,

Wikidata Information about


  • user icon

    Wikidata beatiful post thanks!


Wikidata viewing the topic.
Wikidata what, Wikidata who, Wikidata explanation

There are excerpts from wikipedia on this article and video

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