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On the fraction of random points by specified nearest-neighbour interrelations and degree of attraction

Published online by Cambridge University Press:  01 July 2016

Norbert Henze*
Affiliation:
University of Hannover
*
Postal address: Institut für Mathematische Stochastik, Universität Hannover, Welfengarten 1, D-3000 Hannover 1, W. Germany.

Abstract

Let Z1, …, Zn be i.i.d. random vectors (‘points') defined in having common density f(x) that is assumed to be continuous almost everywhere. For a fixed but otherwise arbitrary norm |.| on , consider the fraction Vn of those points Z1, …, Zn that are the lth nearest neighbour (with respect to |.|) to their own kth nearest neighbour, and write Sn for the fraction of points that are the nearest neighbour of exactly k other points. We derive the stochastic limits of Vn and Sn, as n tends to∞, and show how the results may be applied to the multivariate non-parametric two-sample problem.

Type
Research Article
Copyright
Copyright © Applied Probability Trust 1987 

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