A modified expectation‐maximization algorithm for latent Gaussian graphical model
A modified expectation‐maximization algorithm for latent Gaussian graphical model
复制标题
潜在高斯图模型的改进期望最大化算法
DOI:
10.1002/cjs.11643
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Wu, Yichao
中科院分区:
文献类型:
--
作者:
Zheng, Chaowen;Huang, Jingfang;Wood, Ian A.;Wu, Yichao
This paper considers the latent Gaussian graphical model, which extends the Gaussian graphical model to handle discrete data as well as mixed data with both continuous and discrete variables by assuming that discrete variables are generated by discretizing latent Gaussian variables. We propose a modified expectation‐maximization (EM) algorithm to estimate parameters in the latent Gaussian model for binary data. We also extend the proposed modified EM algorithm to the latent Gaussian model for mixed data. The conditional dependence structure can be consequently constructed by exploring the sparsity pattern of the precision matrix of the latent variables. We illustrate the performance of our proposed estimator through comprehensive numerical studies and an application to voting data of the United Nations General Assembly.
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DOI:
--
发表时间:
2017-08
期刊:
J. Mach. Learn. Res.
影响因子:
--
作者:
Teng Zhang;Yi Yang
通讯作者:
Teng Zhang;Yi Yang
DOI:
10.1214/13-aos1162
发表时间:
2012-12
期刊:
--
影响因子:
--
作者:
Po-Ling Loh;M. Wainwright
通讯作者:
Po-Ling Loh;M. Wainwright
DOI:
--
发表时间:
2012
期刊:
IEEE International Conference on Bioinformatics and Biomedicine
影响因子:
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作者:
Genevera I. Allen;Zhandong Liu
通讯作者:
Zhandong Liu
DOI:
--
发表时间:
2014
期刊:
--
影响因子:
--
作者:
Eunho Yang;Yulia Baker;Pradeep Ravikumar;Genevera I. Allen;Zhandong Liu
通讯作者:
Eunho Yang;Yulia Baker;Pradeep Ravikumar;Genevera I. Allen;Zhandong Liu
影响因子:
1.9
作者:
J. Anderson;J. Pemberton
通讯作者:
J. Pemberton