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A Bayesian ARMA Probability Density Estimator
1Department of Statistics, Texas A&M University, College Station, TX 77843, USA.
Abstract:
A Bayesian approach for constructing ARMA probability density estimators is proposed. Such estimators are ratios of trigonometric polynomials and have a number of advantages over Fourier series estimators, including parsimony and greater efficiency under common conditions. The Bayesian approach is carried out via MCMC, the output of which can be used to obtain probability intervals for unknown parameters and the underlying density. Finite sample efficiency and methods for choosing the estimator's smoothing parameter are considered in a simulation study, and the ideas are illustrated with data on a wine attribute.
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