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Improved local search approaches to solve the post enrolment course timetabling problem

Goh, Say Leng; Kendall, G.; Sabar, Nasser R.

Authors

Say Leng Goh

G. Kendall graham.kendall@nottingham.ac.uk

Nasser R. Sabar



Abstract

In this work, we are addressing the post enrollment course timetabling (PE-CTT) problem. We combine different local search algorithms into an iterative two stage procedure. In the first stage, Tabu Search with Sampling and Perturbation (TSSP) is used to generate feasible solutions. In the second stage, we propose an improved variant of Simulated Annealing (SA), which we call Simulated Annealing with Reheating (SAR), to improve the solution quality of feasible solutions. SAR has three features: a novel neighborhood examination scheme, a new way of estimating local optima and a reheating scheme. SAR eliminates the need for extensive tuning as is often required in conventional SA. The proposed methodologies are tested on the three most studied datasets from the scientific literature. Our algorithms perform well and our results are competitive, if not better, compared to the benchmarks set by the state of the art methods. New best known results are provided for many instances.

Journal Article Type Article
Publication Date Aug 16, 2017
Journal European Journal of Operational Research
Print ISSN 0377-2217
Electronic ISSN 0377-2217
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 261
Issue 1
APA6 Citation Goh, S. L., Kendall, G., & Sabar, N. R. (2017). Improved local search approaches to solve the post enrolment course timetabling problem. European Journal of Operational Research, 261(1),
Keywords Timetabling, Combinatorial optimization, Local search, Tabu Search with Sampling and Perturbation (TSSP), Simulated Annealing with Reheating (SAR)
Publisher URL https://doi.org/10.1016/j.ejor.2017.01.040
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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