On Order Types of Random Point Sets - Inria - Institut national de recherche en sciences et technologies du numérique
Preprints, Working Papers, ... Year : 2018

On Order Types of Random Point Sets

Abstract

Let $P$ be a set of $n$ random points chosen uniformly in the unit square. In this paper, we examine the typical resolution of the order type of $P$. First, we show that with high probability, $P$ can be rounded to the grid of step $\frac{1}{n^{3+\epsilon}}$ without changing its order type. Second, we study algorithms for determining the order type of a point set in terms of the the number of coordinate bits they require to know. We give an algorithm that requires on average $4n \log 2 n + O(n)$ bits to determine the order type of $P$, and show that any algorithm requires at least $4n \log 2 n − O(n \log \log n)$ bits. Both results extend to more general models of random point sets.
Fichier principal
Vignette du fichier
depot.pdf (802.68 Ko) Télécharger le fichier
Vignette du fichier
vignette.png (156.56 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Format Figure, Image
Loading...

Dates and versions

hal-01962093 , version 1 (20-12-2018)
hal-01962093 , version 2 (28-05-2020)

Identifiers

Cite

Olivier Devillers, Philippe Duchon, Marc Glisse, Xavier Goaoc. On Order Types of Random Point Sets. 2018. ⟨hal-01962093v1⟩
428 View
263 Download

Altmetric

Share

More