Erlang mixture modeling for Poisson process intensities
Erlang mixture modeling for Poisson process intensities
复制标题
泊松过程强度的 Erlang 混合建模
DOI:
10.1007/s11222-021-10064-0
复制
发表时间:
2021
影响因子:
2.2
通讯作者:
Kottas, Athanasios
中科院分区:
文献类型:
--
作者:
Kim, Hyotae;Kottas, Athanasios
We develop a prior probability model for temporal Poisson process intensities through structured mixtures of Erlang densities with common scale parameter, mixing on the integer shape parameters. The mixture weights are constructed through increments of a cumulative intensity function which is modeled nonparametrically with a gamma process prior. Such model specification provides a novel extension of Erlang mixtures for density estimation to the intensity estimation setting. The prior model structure supports general shapes for the point process intensity function, and it also enables effective handling of the Poisson process likelihood normalizing term resulting in efficient posterior simulation. The Erlang mixture modeling approach is further elaborated to develop an inference method for spatial Poisson processes. The methodology is examined relative to existing Bayesian nonparametric modeling approaches, including empirical comparison with Gaussian process prior based models, and is illustrated with synthetic and real data examples.
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DOI:
10.1214/14-aoas757
发表时间:
2014-09
期刊:
The annals of applied statistics
影响因子:
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作者:
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通讯作者:
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1
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DOI:
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发表时间:
2006
期刊:
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发表时间:
2020
期刊:
Encyclopedia of Personality and Individual Differences
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发表时间:
2011
期刊:
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