"In this presentation, we draw upon our experience with integer programming formulations of course timetabling problems from the universities in Udine and Benevento and from the Timetabling Competition 2002. We describe the effects of the choice of decision variables and subsequent implementation of the all different constraint, in addition to the effects of various formulations of constraints which enforce certain patterns in timetables. Some rather striking results are presented, including formulations yielding optimal solutions of the instance Udine1 within 91 seconds on a single processor."@en . "Variability of Integer Programming Models of Course Timetabling"@en . "RIV/00216224:14330/07:00048082!RIV11-GA0-14330___" . . "Variability of Integer Programming Models of Course Timetabling"@en . . "RIV/00216224:14330/07:00048082" . "Variability of Integer Programming Models of Course Timetabling" . "Mare\u010Dek, Jakub" . . . . "Rudov\u00E1, Hana" . . . "2"^^ . . . . . "457512" . "14330" . . "P(GA201/07/0205)" . "In this presentation, we draw upon our experience with integer programming formulations of course timetabling problems from the universities in Udine and Benevento and from the Timetabling Competition 2002. We describe the effects of the choice of decision variables and subsequent implementation of the all different constraint, in addition to the effects of various formulations of constraints which enforce certain patterns in timetables. Some rather striking results are presented, including formulations yielding optimal solutions of the instance Udine1 within 91 seconds on a single processor." . . "course timetabling; integer programming; modeling"@en . . "Variability of Integer Programming Models of Course Timetabling" . . "[603D3190EC44]" . . "Burke, Edmund K." . "3"^^ .