On the complexity of randomly weighted Voronoi diagrams

Sariel Har-Peled, Benjamin Raichel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we provide an O(n polylog n) bound on the expected complexity of the randomly weighted Voronoi diagram of a set of n sites in the plane, where the sites can be either points, interior-disjoint convex sets, or other more general objects. Here the randomness is on the weight of the sites, not their location. This compares favorably with the worst case complexity of these diagrams, which is quadratic. As a consequence we get an alternative proof to that of Agarwal et al. [AHKS13] of the near linear complexity of the union of randomly expanded disjoint segments or convex sets (with an improved bound on the latter). The technique we develop is elegant and should be applicable to other problems.

Original languageEnglish (US)
Title of host publicationProceedings of the 30th Annual Symposium on Computational Geometry, SoCG 2014
PublisherAssociation for Computing Machinery
Pages232-241
Number of pages10
ISBN (Print)9781450325943
DOIs
StatePublished - 2014
Event30th Annual Symposium on Computational Geometry, SoCG 2014 - Kyoto, Japan
Duration: Jun 8 2014Jun 11 2014

Publication series

NameProceedings of the Annual Symposium on Computational Geometry

Other

Other30th Annual Symposium on Computational Geometry, SoCG 2014
Country/TerritoryJapan
CityKyoto
Period6/8/146/11/14

Keywords

  • Arrangements
  • Randomized incremental construction
  • Voronoi diagrams

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Geometry and Topology
  • Computational Mathematics

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