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Random coefficients bifurcating autoregressiveprocesses

Published online by Cambridge University Press:  03 October 2014

Benoîte de Saporta
Affiliation:
Univ. Bordeaux, Gretha, UMR 5113, IMB, UMR 5251, 33400 Talence, France CNRS, Gretha, UMR 5113, IMB, UMR 5251, 33400 Talence, France INRIA Bordeaux Sud Ouest, team CQFD, 33400 Talence, France
Anne Gégout-Petit
Affiliation:
Univ. Bordeaux, IMB, UMR 5251, 33400 Talence, France CNRS, IMB, UMR 5251, 33400 Talence, France INRIA Bordeaux Sud Ouest, team CQFD, 33400 Talence, France
Laurence Marsalle
Affiliation:
Univ. Lille 1, Laboratoire Paul Painlevé, UMR 8524, 59655 Villeneuve d’Ascq, France CNRS, Laboratoire Paul Painlevé, UMR 8524, 59655 Villeneuve d’Ascq, France. benoite.desaporta@math.u-bordeaux1.fr
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Abstract

This paper presents a new model of asymmetric bifurcating autoregressive process withrandom coefficients. We couple this model with a Galton−Watson tree to take into account possiblymissing observations. We propose least-squares estimators for the various parameters ofthe model and prove their consistency, with a convergence rate, and asymptotic normality.We use both the bifurcating Markov chain and martingale approaches and derive new resultsin both these frameworks.

Type
Research Article
Copyright
© EDP Sciences, SMAI 2014

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