Fast Bayesian analysis of spatial dynamic factor models
Strickland, Christopher M., Simpson, Daniel P., Turner, Ian W., Denham, Robert, & Mengersen, Kerrie L. (2008) Fast Bayesian analysis of spatial dynamic factor models. [Working Paper] (Submitted (not yet accepted for publication))
A Bayesian Markov chain Monte Carlo (MCMC) algorithm is proposed for the efficient estimation of spatial dynamic factor models (DFMs). The spatial DFM is specified whereby spatial dependence is modelled though the columns of the factor loadings matrix using a Gaussian Markov random field. Krylov subspace methods are used to take advantage of the sparse matrix structures that are inherent in the model. The methodology is used to analyse remotely sensed data from the Moderate Imaging Spectroradiometer satellite. The data set focuses on a region in central Queensland, Australia, which contains two landtype classes. The spatial DFM is used to extract both the landtype information and the associated common factors in the analysis.
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|Item Type:||Working Paper|
|Keywords:||Bayesian Analysis, Spatial dynamic factor model, Gaussian Markov random field, Krylov subspace method, MODIS, Markov chain Monte Carlo|
|Subjects:||Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > STATISTICS (010400) > Applied Statistics (010401)|
Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > STATISTICS (010400) > Statistics not elsewhere classified (010499)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
Past > Schools > Mathematical Sciences
|Copyright Owner:||Copyright 2008 [please consult the authors]|
|Deposited On:||17 Dec 2008 12:13|
|Last Modified:||10 Aug 2011 23:50|
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