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A Cut-Based Heuristic to Produce Almost Feasible Periodic Railway Timetables

  • Christian Liebchen
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3503)

Abstract

We consider the problem of satisfying the maximum number of constraints of an instance of the Periodic Event Scheduling Problem (Pesp). This is a key issue in periodic railway timetable construction, and has many other applications, e.g. for traffic light scheduling.

We generalize two (in-) approximability results, which are known for Maximum-K-Colorable-Subgraph. Moreover, we present a deterministic combinatorial polynomial time algorithm. Its output violates only very few constraints for five real-world instances.

Keywords

Span Tree Local Improvement Light Schedule Span Ratio Feasible Timetable 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Christian Liebchen
    • 1
  1. 1.Institut für MathematikTU BerlinBerlinGermany

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