Splitting \(B_2\)-VPG Graphs into Outer-String and Co-Comparability Graphs

  • Therese Biedl
  • Martin Derka
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10389)


A \(B_2\)-VPG representation of a graph is an intersection representation that consists of orthogonal curves with at most 2 bends. In this paper, we show that the curves of such a representation can be partitioned into \(O(\log n)\) groups that represent outer-string graphs or \(O(\log ^3 n)\) groups that represent permutation graphs. This leads to better approximation algorithms for hereditary graph problems, such as independent set, clique and clique cover, on \(B_2\)-VPG graphs.


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.David R. Cheriton School of Computer ScienceUniversity of WaterlooWaterlooCanada

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