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Social media provides researchers with continuously updated information about developments of interest to large audiences. This paper addresses the task of identifying controversial events using Twitter as a starting point: we propose 3 models for this task and report encouraging initial results.doi:10.1145/1871437.1871751 dblp:conf/cikm/PopescuP10 fatcat:derhqioak5eelg7tejohcxj4ee