Optimal choice among a class of nonparametric estimators of the jump rate for piecewise-deterministic Markov processes

Romain Azaïs 1, 2 Aurélie Muller-Gueudin 2, 1
1 Probabilités et statistiques
IECL - Institut Élie Cartan de Lorraine
2 BIGS - Biology, genetics and statistics
Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine
Abstract : A piecewise-deterministic Markov process is a stochastic process whose behavior is governed by an ordinary differential equation punctuated by random jumps occurring at random times. We focus on the nonparametric estimation problem of the jump rate for such a stochastic model observed within a long time interval under an ergodicity condition. We introduce an uncountable class (indexed by the deterministic flow) of recursive kernel estimates of the jump rate and we establish their strong pointwise consistency as well as their asymptotic normality. We propose to choose among this class the estimator with the minimal variance, which is unfortunately unknown and thus remains to be estimated. We also discuss the choice of the bandwidth parameters by cross-validation methods.
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Article dans une revue
Electronic journal of statistics , Shaker Heights, OH : Institute of Mathematical Statistics, 2016
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Romain Azaïs, Aurélie Muller-Gueudin. Optimal choice among a class of nonparametric estimators of the jump rate for piecewise-deterministic Markov processes. Electronic journal of statistics , Shaker Heights, OH : Institute of Mathematical Statistics, 2016. 〈hal-01168651v2〉

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