International Conference on Computer Aided Systems Theory

Computer Aided Systems Theory – EUROCAST 2015 pp 342-349 | Cite as

Heuristic Approaches for the Probabilistic Traveling Salesman Problem

  • Christoph Weiler
  • Benjamin Biesinger
  • Bin Hu
  • Günther R. Raidl
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9520)

Abstract

The Probabilistic Traveling Salesman Problem (PTSP) is a variant of the classical Traveling Salesman Problem (TSP) where each city has a given probability requiring a visit. We aim for an a-priori tour including every city that minimizes the expected length over all realizations. In this paper we consider different heuristic approaches for the PTSP. First we analyze various popular construction heuristics for the classical TSP applied on the PTSP: nearest neighbor, farthest insertion, nearest insertion, radial sorting and space filling curve. Then we investigate their extensions to the PTSP: almost nearest neighbor, probabilistic farthest insertion, probabilistic nearest insertion. To improve the constructed solutions we use existing 2-opt and 1-shift neighborhood structures for which exact delta evaluation formulations exist. These are embedded within a Variable Neighborhood Descent framework into a Variable Neighborhood Search. Computational results indicate that this approach is competitive to already existing heuristic algorithms and able to find good solutions in low runtime.

Keywords

Probabilistic traveling salesman problem Variable neighborhood search Construction heuristics 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Christoph Weiler
    • 1
  • Benjamin Biesinger
    • 1
  • Bin Hu
    • 2
  • Günther R. Raidl
    • 1
  1. 1.Institute of Computer Graphics and AlgorithmsTU WienViennaAustria
  2. 2.Mobility Department - Dynamic Transportation SystemsAIT Austrian Institute of TechnologyViennaAustria

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