Spatial factor modeling: A Bayesian matrix-normal approach for misaligned data.
Spatial factor modeling: A Bayesian matrix-normal approach for misaligned data.
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DOI:
10.1111/biom.13452
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发表时间:
2022-06
期刊:
影响因子:
1.9
通讯作者:
Banerjee S
中科院分区:
文献类型:
--
作者:
Zhang L;Banerjee S
Multivariate spatially oriented data sets are prevalent in the environmental and physical sciences. Scientists seek to jointly model multiple variables, each indexed by a spatial location, to capture any underlying spatial association for each variable and associations among the different dependent variables. Multivariate latent spatial process models have proved effective in driving statistical inference and rendering better predictive inference at arbitrary locations for the spatial process. High-dimensional multivariate spatial data, which are the theme of this article, refer to data sets where the number of spatial locations and the number of spatially dependent variables is very large. The field has witnessed substantial developments in scalable models for univariate spatial processes, but such methods for multivariate spatial processes, especially when the number of outcomes are moderately large, are limited in comparison. Here, we extend scalable modeling strategies for a single process to multivariate processes. We pursue Bayesian inference, which is attractive for full uncertainty quantification of the latent spatial process. Our approach exploits distribution theory for the matrix-normal distribution, which we use to construct scalable versions of a hierarchical linear model of coregionalization (LMC) and spatial factor models that deliver inference over a high-dimensional parameter space including the latent spatial process. We illustrate the computational and inferential benefits of our algorithms over competing methods using simulation studies and an analysis of a massive vegetation index data set.
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影响因子:
5.7
作者:
Genton, Marc G.;Kleiber, William
通讯作者:
Kleiber, William
DOI:
10.1007/bf02066732
发表时间:
1991-10-01
期刊:
MATHEMATICAL GEOLOGY
影响因子:
--
作者:
BOURGAULT, G;MARCOTTE, D
通讯作者:
MARCOTTE, D
影响因子:
2.4
作者:
Roberts, Gareth O.;Rosenthal, Jeffrey S.
通讯作者:
Rosenthal, Jeffrey S.
DOI:
10.1214/16-aoas931
发表时间:
2016-09
期刊:
The annals of applied statistics
影响因子:
--
作者:
Datta A;Banerjee S;Finley AO;Hamm NAS;Schaap M
通讯作者:
Schaap M
影响因子:
3.7
作者:
Datta A;Banerjee S;Finley AO;Gelfand AE
通讯作者:
Gelfand AE