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International Conference on Future Generation Communication and Networking

FGCN 2008: Advances in Computational Science and Engineering pp 73–84Cite as

Voronoi-assisted Parallel Bidirectional Heuristic Search

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Part of the book series: Communications in Computer and Information Science ((CCIS,volume 28))

Abstract

We propose a method for identifying well-placed island nodes for the purpose of performing a bidirectional parallel heuristic search algorithm. Multi-process bidirectional heuristic search algorithms that utilize island nodes (such as PBA*) have been shown to have the potential for exponential speedup over their plain counterparts that do not utilize island nodes. The problem of how to generate appropriately located island nodes has resisted any general purpose solution to date. The proposed method is an initial step toward this end. We implement our method and evaluate its performance within PBA* for a variety of sliding-tiles puzzles. Our findings reveal that the overhead cost of using our method is negligible, while at the same time, when PBA* is equipped with the proposed method, it outperforms its random-island-nodes counterpart for the vast majority of test cases.

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Author information

Authors and Affiliations

  1. Dept. of Computer Science and Engineering, York University, Toronto, Ontario, Canada

    Anestis A. Toptsis & Rahul A. Chaturvedi

Authors
  1. Anestis A. Toptsis
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  2. Rahul A. Chaturvedi
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Editor information

Editors and Affiliations

  1. Hannam University, 306-791, Daejeon, South Korea

    Tai-hoon Kim

  2. Department of Computer Science, St. Francis Xavier University, Antigonish, NS, Canada

    Laurence T. Yang

  3. Department of Computer Science and Engineering, Masan, Kyungnam University, Kyungnam, South Korea

    Jong Hyuk Park

  4. National Chung Cheng University, Chiayi County, Taiwan

    Alan Chin-Chen Chang

  5. University of Western Macedonia, West Macedonia, Greece

    Thanos Vasilakos

  6. University of Western Sydney, Penrith South, NSW, Australia

    Yan Zhang

  7. University of Limoges/CNRS, Site Jidé, 83 rue d’Isle, 87000, Limoges, France

    Damien Sauveron

  8. University of Plymouth, Plymouth, UK

    Xingang Wang

  9. Wonkwang University, Iksan Chonbuk, South Korea

    Young-Sik Jeong

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© 2009 Springer-Verlag Berlin Heidelberg

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Toptsis, A.A., Chaturvedi, R.A. (2009). Voronoi-assisted Parallel Bidirectional Heuristic Search. In: Kim, Th., et al. Advances in Computational Science and Engineering. FGCN 2008. Communications in Computer and Information Science, vol 28. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10238-7_6

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  • DOI: https://doi.org/10.1007/978-3-642-10238-7_6

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-10237-0

  • Online ISBN: 978-3-642-10238-7

  • eBook Packages: Computer ScienceComputer Science (R0)

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