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A Shortest Path Algorithm Based on Limited Search Heuristics

  • Feng Lu
  • Poh-Chin Lai
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3967)

Abstract

Dijkstra’s algorithm is arguably the most popular computational solution to finding single source shortest paths. Increasing complexity of road networks, however, has posed serious performance challenge. While heuristic procedures based on geometric constructs of the networks would appear to improve performance, the fallacy of depreciated accuracy has been an obstacle to the wider application of heuristics in the search for shortest paths. The authors presented a shortest path algorithm that employs limited search heuristics guided by spatial arrangement of networks. The algorithm was tested for its efficiency and accuracy in finding one-to-one and one-to-all shortest paths among systematically sampled nodes on a selection of real-world networks of various complexity and connectivity. Our algorithm was shown to outperform other theoretically optimal solutions to the shortest path problem and with only little accuracy lost. More importantly, the confidence and accuracy levels were both controllable and predictable.

Keywords

shortest path algorithm road network heuristic 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Feng Lu
    • 1
  • Poh-Chin Lai
    • 2
  1. 1.State Key Laboratory of Resources and Environmental Information System, The Institute of Geographical Sciences and Natural Resources ResearchChinese Academy of SciencesBeijingP.R. China
  2. 2.Department of GeographyThe University of Hong KongHong Kong SARP.R. China

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