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Some correlation properties of spatial autoregressions

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  • Martellosio, Federico
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    Abstract

    This paper investigates how the correlations implied by a first-order simultaneous autoregressive (SAR(1)) process are affected by the weights matrix W and the autocorrelation parameter . We provide an interpretation of the covariances between the random variables observed at two spatial units, based on a particular type of walks connecting the two units. The interpretation serves to explain a number of correlation properties of SAR(1) models, and clarifies why it is impossible to control the correlations through the specification of W.

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    File URL: http://mpra.ub.uni-muenchen.de/13141/
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    File URL: http://mpra.ub.uni-muenchen.de/17254/
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    Bibliographic Info

    Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 13141.

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    Date of creation: Oct 2008
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    Handle: RePEc:pra:mprapa:13141

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    Related research

    Keywords: simultaneous autoregressions; spatial autocorrelation; spatial weights matrices; walks in graphs;

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    1. Case, Anne C, 1991. "Spatial Patterns in Household Demand," Econometrica, Econometric Society, vol. 59(4), pages 953-65, July.
    2. Pinkse, Joris & Slade, Margaret E., 1998. "Contracting in space: An application of spatial statistics to discrete-choice models," Journal of Econometrics, Elsevier, vol. 85(1), pages 125-154, July.
    3. Kelejian, Harry H. & Prucha, Ingmar R., 2010. "Specification and estimation of spatial autoregressive models with autoregressive and heteroskedastic disturbances," Journal of Econometrics, Elsevier, vol. 157(1), pages 53-67, July.
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