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Polya坛子抽样模型及其随机模拟
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作者 王丙参 魏艳华 张艺馨 《天水师范学院学报》 2018年第2期8-11,共4页
系统探讨了Polya坛子模型与常见分布的关系,利用概率论与鞅论知识从不同角度证明结论,最后对Polya坛子模型进行随机模拟,得出n次抽样中抽到黑球次数的仿真分布及其数值特征,并给出了MATLAB代码供读者参考.
关键词 polya坛子模型 随机模拟
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Semiparametric Bayesian analysis of high-dimensional censored outcome data
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作者 Chetkar Jha Yi Li Subharup Guha 《Statistical Theory and Related Fields》 2017年第2期194-204,共11页
The Surveillance, Epidemiology and End Results (SEER) cancer database contains survival data forUS individuals diagnosed with cancer. Semiparametric Bayesian methods are computationallyexpensive to fit for such large ... The Surveillance, Epidemiology and End Results (SEER) cancer database contains survival data forUS individuals diagnosed with cancer. Semiparametric Bayesian methods are computationallyexpensive to fit for such large data-sets. This paper develops a cost-effective Markov chain MonteCarlo strategy for censored outcomes to fit a semiparametric bayesian analysis of SEER data ofNew Mexico. We use an accelerated failure time model, with Dirichlet process random effectsfor inter-subject variation, and intrinsic conditionally autoregressive random effects for spatialcorrelations. The results offer insights into differences in breast cancer mortality rates betweenethnic groups, tumor grade and spatial effect of counties. 展开更多
关键词 ICAR models data squashing Dirichlet process generalised pólya urn process big data
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