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Kernel density estimation for stationary random fields

Abstract

In this paper, under natural and easily verifiable conditions, we prove the L1\mathbb{L}^1-convergence and the asymptotic normality of the Parzen-Rosenblatt density estimator for stationary random fields of the form Xk=g(εks,sZd)X_k = g\left(\varepsilon_{k-s}, s \in \Z^d \right), kZdk\in\Z^d, where (εi)iZd(\varepsilon_i)_{i\in\Z^d} are i.i.d real random variables and gg is a measurable function defined on RZd\R^{\Z^d}. Such kind of processes provides a general framework for stationary ergodic random fields. A Berry-Esseen's type central limit theorem is also given for the considered estimator.

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