Mixed Effects Modeling for Areal Data that Exhibit Multivariate-Spatio-Temporal Dependencies
Abstract
There are many data sources available that report related variables of interest that are also referenced over geographic regions and time; however, there are relatively few general statistical methods that one can readily use that incorporate these multivariate-spatio-temporal dependencies. As such, we introduce the multivariate-spatio-temporal mixed effects model (MSTM) to analyze areal data with multivariate-spatio-temporal dependencies. The proposed MSTM extends the notion of Moran's I basis functions to the multivariate-spatio-temporal setting. This extension leads to several methodological contributions including extremely effective dimension reduction, a dynamic linear model for multivariate-spatio-temporal areal processes, and the reduction of a high-dimensional parameter space using a novel parameter model. Several examples are used to demonstrate that the MSTM provides an extremely viable solution to many important problems found in different and distinct corners of the spatio-temporal statistics literature including: modeling nonseparable and nonstationary covariances, combing data from multiple repeated surveys, and analyzing massive multivariate-spatio-temporal datasets.
Cite
@article{arxiv.1407.7479,
title = {Mixed Effects Modeling for Areal Data that Exhibit Multivariate-Spatio-Temporal Dependencies},
author = {Jonathan R. Bradley and Scott H. Holan and Christopher K. Wikle},
journal= {arXiv preprint arXiv:1407.7479},
year = {2014}
}