Equivalence theory for density estimation, Poisson processes and Gaussian white noise with drift

Lawrence D. Brown, Andrew V. Carter, Mark G. Low, Cun-Hui Zhang

The Annals of Statistics · 2004 · Volume 32 · Issue 5

Abstract

This paper establishes the global asymptotic equivalence between a Poisson process with variable intensity and white noise with drift under sharp smoothness conditions on the unknown function. This equivalence is also extended to density estimation models by Poissonization. The asymptotic equivalences are established by constructing explicit equivalence mappings. The impact of such asymptotic equivalence results is that an investigation in one of these nonparametric models automatically yields asymptotically analogous results in the other models.

Keywords

62B15, 62G07, 62G20, ‎asymptotic ‎equivalence, decision theory, local limit theorem, quantile transform, White noise model

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