Bayes prediction density and regression estimation — A semiparametric approach
1988
This paper is concerned with the Bayes estimation of an arbitrary multivariate density,f(x), x ∃ Rk. Such anf(x) may be represented as a mixture of a given parametric family of densities {h (x¦θ)} with support inRk, whereθ (inRd) is chosen according to a mixing distributionG. We consider the semiparametric Bayes approach in whichG, in turn, is chosen according to a Dirichlet process prior with given parameterα. We then specialize these results whenf is expressed as a mixture of multivariate normal densitiesΦ (x¦Μ, λ) whereΜ is the mean vector and λ is the precision matrix. The results are finally applied to estimating a regression parameter.
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