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Testing for Spatial Effects in Seemingly Unrelated Regressions

Listed author(s):
  • Jesús Mur
  • Fernando López
  • Marcos Herrera

Abstract The paper focuses on the case of a panel data set, without unobserved individual effects, treated by means of an SUR specification. The problem raised is to test for the presence of spatial effects in these multivariate systems. Various useful tests are developed based on the principle of the Lagrange Multiplier in a maximum-likelihood framework. Also, we address the question of the time stability of the sequence of spatial dependence coefficients, as a maintained hypothesis that is not necessarily true in applied work. The second part of the paper presents the results of a Monte Carlo experiment. Essais sur les effets spatiaux dans des régressions apparemment sans rapport Resume Cette communication se concentre sur le cas de l'ensemble de données de panel, sans effets individuels non observés, traitées au moyen d'une spécification SUR. Le problème soulevé concerne l'examen de la présence d'effets spatiaux dans ces systèmes à multi-variables. On développe plusieurs essais utiles, basés sur le principe du multiplicateur d'Euler-Lagrange dans un cadre de probabilité maximale. En outre, nous nous penchons sur la question de la stabilité en fonction du temps des coefficients de dépendance spatiale, en tant qu'hypothèse maintenue qui n'est pas nécessairement vraie dans les applications pratiques. La deuxième partie de la communication présente les résultats d'une expérience Monte Carlo. Ensayando los efectos espaciales en ecuaciones aparentemente no relacionadas Extracto El trabajo se centra en el caso de un conjunto de datos de panel, donde no existen efectos individuales inobservados, tratado por medio de una especificación SUR. El problema que se plantea es contrastar la existencia de efectos espaciales en ese tipo de sistemas multivariados. Se desarrollan varios contrastes basados en el principio del Multiplicador de Lagrange en un contexto de máxima verosimilitud. Igualmente tratamos la cuestioen de la estabilidad temporal en la secuencia de coeficientes de dependencia espacial, como una hipótesis mantenida que no es necesariamente cierta en trabajos de tipo aplicados. La parte final del arti′culo presenta los resultados de un experimento de Monte Carlo.

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Article provided by Taylor & Francis Journals in its journal Spatial Economic Analysis.

Volume (Year): 5 (2010)
Issue (Month): 4 ()
Pages: 399-440

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Handle: RePEc:taf:specan:v:5:y:2010:i:4:p:399-440
DOI: 10.1080/17421772.2010.516443
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