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Spatio-Temporal weight with simultaneous effect for environmental data


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  • Alessia Naccarato


In this work we present space-time models with simultaneous effect in which the relations between phenomenon measured in different sites are not determined on the base of an a priori structure, but are estimated in the model’s estimation procedure. This approach avoids superimposition of a priori space fixed structure so that the spatial weights are not bound at being symmetrical and have not to be constant over time. In this way, spatial weights will then take into account the intensity and the direction of influence that a single station, in a given time including the contemporaneous one, has on the whole spatial system and vice versa. To reduce the increase in the number of parameters a procedure for constrained estimation is presented.

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Bibliographic Info

Paper provided by Department of Economics - University Roma Tre in its series Departmental Working Papers of Economics - University 'Roma Tre' with number 0157.

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Date of creation: Jun 2012
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Handle: RePEc:rtr:wpaper:0157

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Related research

Keywords: VAR Models; Space-Time Models; Simultaneous Effect; Constrained Maximum Likelihood Estimator;

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Cited by:
  1. Alessia Naccarato & Benassi Federico, 2013. "Administrative boundaries and homogeneus areas with respect to demographic features of resident population in Tuscany," Departmental Working Papers of Economics - University 'Roma Tre' 0184, Department of Economics - University Roma Tre.


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