Speed-up techniques for shortest-path computations

  • Authors:
  • Dorothea Wagner;Thomas Willhalm

  • Affiliations:
  • Universität Karlsruhe, Fakultät für Informatik, Institut für Theoretische Informatik, Karlsruhe;Universität Karlsruhe, Fakultät für Informatik, Institut für Theoretische Informatik, Karlsruhe

  • Venue:
  • STACS'07 Proceedings of the 24th annual conference on Theoretical aspects of computer science
  • Year:
  • 2007

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Abstract

During the last years, several speed-up techniques for Dijkstra's algorithm have been published that maintain the correctness of the algorithm but reduce its running time for typical instances. They are usually based on a preprocessing that annotates the graph with additional information which can be used to prune or guide the search. Timetable information in public transport is a traditional application domain for such techniques. In this paper, we provide a condensed overview of new developments and extensions of classic results. Furthermore, we discuss how combinations of speed-up techniques can be realized to take advantage from different strategies.