Google Research

Wikidata: A Free Collaborative Knowledge Base

  • Denny Vrandečić
  • Markus Krötzsch
Communications of the ACM, vol. 57 (2014), pp. 78-85


Unnoticed by most of its readers, Wikipedia is currently undergoing dramatic changes, as its sister project Wikidata introduces a new multilingual ‘Wikipedia for data’ to manage the factual information of the popular online encyclopedia. With Wikipedia’s data becoming cleaned and integrated in a single location, opportunities arise for many new applications. In this article, we provide an extended overview of Wikidata, including its essential design choices and data model. Based on up-to-date statistics, we discuss the project's development so far and outline interesting application areas for this new resource.

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