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Hétérogénéité spatiale. Principes et méthodes

Julie Le Gallo ()

Economie & Prévision, 2004, vol. 162, issue 1, 151-172

Abstract: This article has a dual purpose. First, it describes the main econometric specifications which can be used to represent spatial heterogeneity, reflected inan instability ofparameters inspace and/or a heteroscedasticity oferror terms. Only the specifications valid in cross-section are examined. Second, it explains the links between spatial heterogeneity and autocorrelation, the other major feature of localised data, defined by the absence of independence between geographical observations. In particular, we look at the extent to which traditional tests of heteroscedasticity or instability need to be amendedtotakeaccountofspatialautocorrelation.Anapplicationdesignedtoillustratethemainmodelsandthedifferent tests is also proposed.

Keywords: spatial heterogeneity; spatial econometrics; structural instability; heteroscedasticity (search for similar items in EconPapers)
Date: 2004
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