I/O-Efficiently pruning dense spanners

  • Authors:
  • Joachim Gudmundsson;Jan Vahrenhold

  • Affiliations:
  • NICTA, Sydney, Australia;Institut für Informatik, Westfälische Wilhelms-Universität Münster, Münster, Germany

  • Venue:
  • JCDCG'04 Proceedings of the 2004 Japanese conference on Discrete and Computational Geometry
  • Year:
  • 2004

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Abstract

Given a geometric graph G=(S,E) in ${\mathbb R}^{d}$ with constant dilation t, and a positive constant ε, we show how to construct a (1+ε)-spanner of G with ${\mathcal O}(|S|)$ edges using ${\mathcal O}(sort(|E|))I/O$ I/O operations.