Stability of the optimal filter in a hidden Markov model with multiplicative noise

preprint2013arXivOpen access

Abstract

We consider a hidden Markov model with multiplicative noise emerging from studies of software reliability. We show the stability of the optimal filter with respect to general initial conditions in the total variation- and LpL^p-norm and deduce explicit rates. Remarkably, stability turns out to be independent of the ergodic behavior of the signal.

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