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The limit distribution for maxima of ‘weighted' rth-nearest-neighbour distances

Published online by Cambridge University Press:  14 July 2016

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

Abstract

Let X1, X2, · ··, Xn be independent identically distributed random points with common density f(x), taking values in a bounded region (p ≧ 1). We obtain the limit distribution, as n → ∞, for the maximum value of the suitably ‘weighted' (according to f(x)) rth-nearest-neighbour distances of Χ1, · ··, Χ n (r ≧ 1 fixed) provided that f(x) is bounded from below by a positive constant and a weak continuity condition holds. This is achieved by refining an argument used by the author (Henze (1981)) to derive the limit distribution in the special case r = 1. Edge-effects are eliminated by defining, for each Xi, the distance to the boundary of G to be the ‘rth-nearest-neighbour distance' if it is smaller than the distance to the rth nearest neighbour among the remaining points. Applications to a multivariate test of goodness of fit are given.

Type
Research Papers
Copyright
Copyright © Applied Probability Trust 1982 

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References

Galambos, J. (1978) The Asymptotic Theory of Extreme Order Statistics. Wiley, New York.Google Scholar
Henze, N. (1981) Ein asymptotischer Satz über den maximalen Minimalabstand von unabhängigen Zufallsvektoren mit Anwendung auf einen Anpassungstest im ℝ p und auf der Kugel. Doctoral dissertation, University of Hannover.Google Scholar
Weiss, L. (1960) A test of fit based on the largest sample spacing. J. SIAM 8, 295299.Google Scholar