Collaborative Knowledge Base

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. About this text In March 2014, this manuscript has been accepted its current form for publication as a con-tributed article in Communica-tions of the ACM. It is an au-thors ’ draft and not the final ver-sion. The final article should be published with Open Access, us