Especificación dinámica: comparación entre distintas estrategias.

Título inglés	Dynamic specification: comparison of different strategies.
Título español	Especificación dinámica: comparación entre distintas estrategias.
Autor/es	Arcarons Bullit, J. ; Murillo Fort, Carles
Organización	Dep. Estad. Econ. Fac. Cienc. Econ. Empres. Univ. Barcelona, Barcelona, España
Revista	0210-8054
Publicación	1987, 11 (1): 49-59, 12 Ref.
Tipo de documento	articulo
Idioma	Español
Resumen inglés	In the present article we realize a comparative study between two alternative methods aimed to the specification of dynamic relationships between economic variables. On one hand, we will make use of the corner method as a procedure to identify the lag structures and to estimate the parameters involved in a transfer function model. On the other hand, we will resort to common factor analysis (COMFAC) as a procedure to develop the specification strategy in the dynamic models case. In this case we take as starting point a general model -overparametrized- and, by means of a sequence of tests about the relations between parameters, we proceed to simplificate common terms. Both methods advantages and shortcomings are illustrated by means of a simulation exercise that, on one hand, allows us to expose the operative problems associated to each case and, on the other hand, brings us to recommend as a method to specificate dynamic relations a twofold approach that consists in taking advantage of the results obtained from the approach suited to the transfer function models, together with the information provided a priori by the Economic Theory.
Clasificación UNESCO	120915
Palabras clave español	Econometría ; Modelo dinámico
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