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DOI: 10.4230/LIPIcs.FSTTCS.2012.337
URN: urn:nbn:de:0030-drops-38715
URL: http://drops.dagstuhl.de/opus/volltexte/2012/3871/
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Bonsma, Paul

Rerouting shortest paths in planar graphs

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Abstract

A rerouting sequence is a sequence of shortest st-paths such that consecutive paths differ in one vertex. We study the Shortest Path Rerouting Problem, which asks, given two shortest st-paths P and Q in a graph G, whether a rerouting sequence exists from P to Q. This problem is PSPACE-hard in general, but we show that it can be solved in polynomial time if G is planar. To this end, we introduce a dynamic programming method for reconfiguration problems.

BibTeX - Entry

@InProceedings{bonsma:LIPIcs:2012:3871,
  author =	{Paul Bonsma},
  title =	{{Rerouting shortest paths in planar graphs}},
  booktitle =	{IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012) },
  pages =	{337--349},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-47-7},
  ISSN =	{1868-8969},
  year =	{2012},
  volume =	{18},
  editor =	{Deepak D'Souza and Telikepalli Kavitha and Jaikumar Radhakrishnan},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2012/3871},
  URN =		{urn:nbn:de:0030-drops-38715},
  doi =		{http://dx.doi.org/10.4230/LIPIcs.FSTTCS.2012.337},
  annote =	{Keywords: shortest path, rerouting, reconfiguration problem, planar graph, polynomial time, dynamic programming}
}

Keywords: shortest path, rerouting, reconfiguration problem, planar graph, polynomial time, dynamic programming
Seminar: IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2012)
Issue Date: 2012
Date of publication: 10.12.2012


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