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2018 | OriginalPaper | Chapter

4. Bayesian Nonparametric Spatially Smoothed Density Estimation

Authors : Timothy Hanson, Haiming Zhou, Vanda Inácio de Carvalho

Published in: New Frontiers of Biostatistics and Bioinformatics

Publisher: Springer International Publishing

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Abstract

A Bayesian nonparametric density estimator that changes smoothly in space is developed. The estimator is built using the predictive rule from a marginalized Polya tree, modified so that observations are spatially weighted by their distance from the location of interest. A simple refinement is proposed to accommodate arbitrarily censored data and a test for whether the density is spatially varying is also developed. The method is illustrated on two real datasets, and an R function SpatDensReg is provided for general use.

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Metadata
Title
Bayesian Nonparametric Spatially Smoothed Density Estimation
Authors
Timothy Hanson
Haiming Zhou
Vanda Inácio de Carvalho
Copyright Year
2018
DOI
https://doi.org/10.1007/978-3-319-99389-8_4

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