|This article may rely excessively on sources too closely associated with the subject, preventing the article from being verifiable and neutral. (February 2013)|
Main page of Wikidata
|Type of site||Knowledge base, wiki|
|Created by||Wikimedia community|
|Launched||29 October 2012|
|Alexa rank||31,788 (December 2013[update])|
Wikidata is a collaboratively edited knowledge base operated by the Wikimedia Foundation. It is intended to provide a common source of certain data types (for example, birth dates) which can be used by Wikimedia projects such as Wikipedia. This is similar to the way Wikimedia Commons provides storage for media files and access to those files for all Wikimedia projects.
Wikidata is a document-oriented database, focused around 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.
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 €1.3 million. Initial development of the project is being overseen by Wikimedia Deutschland and has been split into three phases:
- Centralising interlanguage links – links between Wikipedia articles about the same topic in different languages
- Providing a central place for infobox data for all Wikipedias
- Creating and updating list articles based on data in Wikidata
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 interlanguage links for Wikipedia articles about the topic.
Initially, Wikidata was a self-contained repository of interlanguage links. No Wikipedia language editions were able to access Wikidata, and therefore had to continue to maintain their own sets 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, the English Wikipedia on 13 February and all other Wikipedias on 6 March. After a proposal to restrict the removal of language links from the English Wikipedia did not reach consensus, automatic editors ("bots") were approved to delete them from the English Wikipedia.
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.
Phase 3 will involve the database querying and the creation of lists based on data stored on Wikidata.
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- Wikidata (Archived at WebCite)
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|Wikimedia Commons has media related to Wikidata.|
|Wikidata has open data related to: Wikidata|
- Official website
- Wikidata on Twitter
- meta:Wikidata – coordination page for the project at Meta-Wiki
- Demo system – lets the user try out the current development status
- Wikidata-l – Discussion list for the Wikidata project
- Wikidata-bugs – Bug reporting list for the Wikidata project