… . . . . . . . . . . . 152 Recall-Oriented Learning of Named Entities in Arabic Wikipedia Behrang Mohit, Nathan Schneider, Rishav Bhowmick, Kemal Oflazer and Noah A. Smith . . . . 162 ix Tree Representations in Probabilistic Models for Extended Named Entities Detection Marco Dina…

…process. This process is doubly collaborative in user-generated systems such as Wikimedia, where online help is under constant revision, positioning users as au- thors and editors of crowd-sourced documentation. If technical and professional Foreword xv communication seems more f…