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Appears in Collections:Computing Science and Mathematics Journal Articles
Peer Review Status: Refereed
Title: Investigating Ahuja-Orlin's large neighbourhood search approach for examination timetabling
Author(s): Abdullah, Salwani
Ahmadi, Samad
Burke, Edmund
Dror, Moshe
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Keywords: Examination timetabling
Large neighbourhood
Improvement graph
Issue Date: Apr-2007
Citation: Abdullah S, Ahmadi S, Burke E & Dror M (2007) Investigating Ahuja-Orlin's large neighbourhood search approach for examination timetabling, OR Spectrum, 29 (2), pp. 351-372.
Abstract: Since the 1960s, automated approaches to examination timetabling have been explored and a wide variety of approaches have been investigated and developed. In this paper we build upon a recently presented, sequential solution improvement technique which searches efficiently over a very large set of "adjacent" (neighbourhood) solutions. This solution search methodology, originally developed by Ahuja and Orlin, has been applied successfully in the past to a number of difficult combinatorial optimisation problems. It is based on an improvement graph representation of solution adjacency and identifies improvement moves by finding cycle exchange operations using a modified shortest path label-correcting algorithm. We have drawn upon Ahuja-Orlin's basic methodology to develop an effective automated exam timetabling technique. We have evaluated our approach against the latest methodologies in the literature on standard benchmark problems. We demonstrate that our approach produces some of the best known results on these problems.
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