Functional regression via variational Bayes.
Functional regression via variational Bayes.
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DOI:
10.1214/11-ejs619
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发表时间:
2011-01-01
影响因子:
1.1
通讯作者:
Crainiceanu C
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文献类型:
--
作者:
Goldsmith J;Wand MP;Crainiceanu C
We introduce variational Bayes methods for fast approximate inference in functional regression analysis. Both the standard cross-sectional and the increasingly common longitudinal settings are treated. The methodology allows Bayesian functional regression analyses to be conducted without the computational overhead of Monte Carlo methods. Confidence intervals of the model parameters are obtained both using the approximate variational approach and nonparametric resampling of clusters. The latter approach is possible because our variational Bayes functional regression approach is computationally efficient. A simulation study indicates that variational Bayes is highly accurate in estimating the parameters of interest and in approximating the Markov chain Monte Carlo-sampled joint posterior distribution of the model parameters. The methods apply generally, but are motivated by a longitudinal neuroimaging study of multiple sclerosis patients. Code used in simulations is made available as a web-supplement.
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影响因子:
--
作者:
KULLBACK, S;LEIBLER, RA
通讯作者:
LEIBLER, RA
影响因子:
11
作者:
Lin, X.;Tench, C. R.;Constantinescu, C. S.
通讯作者:
Constantinescu, C. S.
影响因子:
0.8
作者:
Cardot, H;Ferraty, F;Sarda, P
通讯作者:
Sarda, P
DOI:
10.1198/016214507000000527
发表时间:
2007-09-01
影响因子:
3.7
作者:
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通讯作者:
Ogden, R. Todd
影响因子:
5.7
作者:
Jordan, MI
通讯作者:
Jordan, MI