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Erscheinungsjahr: 
2015
Quellenangabe: 
[Journal:] Econometrics [ISSN:] 2225-1146 [Volume:] 3 [Issue:] 2 [Publisher:] MDPI [Place:] Basel [Year:] 2015 [Pages:] 317-338
Verlag: 
MDPI, Basel
Zusammenfassung: 
The SAR model is widely used in spatial econometrics to model Gaussian processes on a discrete spatial lattice, but for large datasets, fitting it becomes computationally prohibitive, and hence, its usefulness can be limited. A computationally-efficient spatial model is the spatial random effects (SRE) model, and in this article, we calibrate it to the SAR model of interest using a generalisation of the Moran operator that allows for heteroskedasticity and an asymmetric SAR spatial dependence matrix. In general, spatial data have a measurement-error component, which we model, and we use restricted maximum likelihood to estimate the SRE model covariance parameters; its required computational time is only the order of the size of the dataset. Our implementation is demonstrated using mean usual weekly income data from the 2011 Australian Census.
Schlagwörter: 
asymmetric spatial dependence matrix
Australian census
heteroskedasticity
Moran operator
spatial autoregressive model
spatial basis functions
spatial random effects model
JEL: 
C21
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