Bayesian nonparametric density estimation under length bias |
| |
Authors: | Spyridon J Hatjispyros Theodoros Nicoleris Stephen G Walker |
| |
Institution: | 1. Department of Mathematics, University of the Aegean, Karlovassi, Samos, Greece;2. Department of Economics, National and Kapodistrian University of Athens, Athens, Greece;3. Department of Mathematics, University of Texas at Austin, Austin, Texas, USA |
| |
Abstract: | A density estimation method in a Bayesian nonparametric framework is presented when recorded data are not coming directly from the distribution of interest, but from a length biased version. From a Bayesian perspective, efforts to computationally evaluate posterior quantities conditionally on length biased data were hindered by the inability to circumvent the problem of a normalizing constant. In this article, we present a novel Bayesian nonparametric approach to the length bias sampling problem that circumvents the issue of the normalizing constant. Numerical illustrations as well as a real data example are presented and the estimator is compared against its frequentist counterpart, the kernel density estimator for indirect data of Jones. |
| |
Keywords: | Bayesian nonparametric inference Length biased sampling Metropolis algorithm |
|
|