DIR 2011, the 11th Dutch-Belgian Infor­ma­tion Retrieval Work­shop, was orga­nized by the Infor­ma­tion and Lan­guage Pro­cess­ing group (ILPS) of the Uni­ver­sity of Ams­ter­dam in col­lab­o­ra­tion with the Cen­trum Wiskunde en Infor­mat­ica (CWI). Two types of sub­mis­sions were accepted for the work­shop: research papers describ­ing orig­i­nal research, com­pressed con­tri­bu­tions pre­sent­ing a More >