Dirichlet Process Mixtures of Beta Distributions , with Applications to Density and Intensity Estimation

Dirichlet Process Mixtures of Beta Distributions , with Applications to Density and Intensity Estimation
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Beta分布的狄利克雷过程混合及其在密度和强度估计中的应用

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发表时间:
2006
期刊:
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通讯作者:
A. Kottas
A. Kottas
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作者:
A. Kottas

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本文提出了一类以Beta分布为混合核函数、Dirichlet过程为先验分布的贝叶斯非参数混合模型。令人鼓舞的应用包括有界域上的密度估计,以及随时间推移的非齐次泊松过程的推断。我们提出了混合模型的制定,讨论前规范,并开发一个计算方法后验推理。该模型用两个数据集来说明。
We propose a class of Bayesian nonparametric mixture models with a Beta distribution providing the mixture kernel and a Dirichlet process prior assigned to the mixing distribution. Motivating applications include density estimation on bounded domains, and inference for non-homogeneous Poisson processes over time. We present the mixture model formulation, discuss prior specification, and develop a computational approach to posterior inference. The model is illustrated with two data sets.