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NPAC technical report SCCS-777

A Comparison of Annealing Techniques for Academic Course Scheduling

Saleh Elmohamed, Paul Coddington, and Geoffrey Fox

Northeast Parallel Architectures Center
Syracuse University, Syracuse, NY 13244

{saleh, paulc, gcf}@npac.syr.edu

In this study we have tackled the NP-hard problem of academic class scheduling (or timetabling) at the university level. We have investigated a variety of approaches based on simulated annealing, including mean-field annealing, simulated annealing with three different cooling schedules, and the use of a rule-based preprocessor to provide a good initial solution for annealing. The best results were obtained using simulated annealing with adaptive cooling and reheating as a function of cost, and a rule-based preprocessor. This approach enabled us to obtain valid schedules for the timetabling problem for a large university, using a complex cost function that includes student preferences. None of the other methods were able to provide a complete valid schedule.

Submitted to PATAT'97, the 2nd international conference on the Practice and Theory of Automated Timetabling.





Saleh Elmohamed
Tue Apr 29 19:08:49 EDT 1997