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Auxiliary information : the raking-ratio empirical process

Abstract

We study the empirical measure associated to a sample of size nn and modified by NN iterations of the raking-ratio method. The empirical measure is adjusted to match the true probability of sets in a finite partition which changes each step. We establish asymptotic properties of the raking-ratio empirical process indexed by functions as n+n\rightarrow +\infty, for NN fixed. A closed-form expression of the limiting covariance matrices is derived as N+N\rightarrow +\infty. The nonasymptotic Gaussian approximation we use also yields uniform Berry-Esseen type bounds in n,Nn, N and sharp estimates of the uniform quadratic risk reduction. In the two-way contingency table formulas characterizing the limiting process are very simple.

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