Heuristic Techniques for Single Line Train Scheduling

  • Authors:
  • A. Higgins;E. Kozan;L. Ferreira

  • Affiliations:
  • School of Mathematics, Queensland University of Technology, PO Box 2434, QLD 4001, Australia. E-mail: A.Higgins@fsc.qut.edu.au, E.Kozan@fsc.qut.edu.au;School of Mathematics, Queensland University of Technology, PO Box 2434, QLD 4001, Australia. E-mail: A.Higgins@fsc.qut.edu.au, E.Kozan@fsc.qut.edu.au;School of Civil Engineering, Queensland University of Technology, PO Box 2434, QLD 4001, Australia. E-mail: L.Ferreira@qut.edu.au

  • Venue:
  • Journal of Heuristics
  • Year:
  • 1997

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Abstract

Optimising a train schedule on a single line track is known to beNP-Hard with respect to the number of conflicts in the schedule. Thismakes it difficult to determine optimum solutions to real lifeproblems in reasonable time and raises the need for good heuristictechniques. The heuristics applied and compared in this paper are alocal search heuristic with an improved neighbourhood structure,genetic algorithms, tabu search and two hybrid algorithms. When notime constraints are enforced on solution time, the genetic andhybrid algorithms were within five percent of the optimal solutionfor at least ninety percent of the test problems.