License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ISAAC.2022.51
URN: urn:nbn:de:0030-drops-173369
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2022/17336/
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Münch, Miriam ; Rutter, Ignaz ; Stumpf, Peter

Partial and Simultaneous Transitive Orientations via Modular Decompositions

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LIPIcs-ISAAC-2022-51.pdf (1.0 MB)

Abstract

A natural generalization of the recognition problem for a geometric graph class is the problem of extending a representation of a subgraph to a representation of the whole graph. A related problem is to find representations for multiple input graphs that coincide on subgraphs shared by the input graphs. A common restriction is the sunflower case where the shared graph is the same for each pair of input graphs. These problems translate to the setting of comparability graphs where the representations correspond to transitive orientations of their edges. We use modular decompositions to improve the runtime for the orientation extension problem and the sunflower orientation problem to linear time. We apply these results to improve the runtime for the partial representation problem and the sunflower case of the simultaneous representation problem for permutation graphs to linear time. We also give the first efficient algorithms for these problems on circular permutation graphs.

BibTeX - Entry

@InProceedings{munch_et_al:LIPIcs.ISAAC.2022.51,
  author =	{M\"{u}nch, Miriam and Rutter, Ignaz and Stumpf, Peter},
  title =	{{Partial and Simultaneous Transitive Orientations via Modular Decompositions}},
  booktitle =	{33rd International Symposium on Algorithms and Computation (ISAAC 2022)},
  pages =	{51:1--51:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-258-7},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{248},
  editor =	{Bae, Sang Won and Park, Heejin},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2022/17336},
  URN =		{urn:nbn:de:0030-drops-173369},
  doi =		{10.4230/LIPIcs.ISAAC.2022.51},
  annote =	{Keywords: representation extension, simultaneous representation, comparability graph, permutation graph, circular permutation graph, modular decomposition}
}

Keywords: representation extension, simultaneous representation, comparability graph, permutation graph, circular permutation graph, modular decomposition
Collection: 33rd International Symposium on Algorithms and Computation (ISAAC 2022)
Issue Date: 2022
Date of publication: 14.12.2022

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