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Actualización de la Inversa de Leontief

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  • Xesús Pereira López

    ()
    (Economía Cuantitativa-IDEGA, USC)

  • José Luis Quiñoá López

    ()
    (Economía Cuantitativa, USC)

  • André Carrascal Incera

    ()
    (IDEGA, USC)

Abstract

Among the many matrix updating techniques available, basic RAS and its extensions are the most popular. RAS is a biproportional adjustment method, consisting in reiterative multiplication of row and column elements of a base matrix by correction coefficients. This technique is almost invariably used on the technical coefficients matrix (or on the intermediate consumption matrix), but it is adaptable to other cases. The most usual formulation of the technique represents it as an optimization program minimizing a distance among matrixes subject to several constraints. This paper shows instead a scale algorithm representation corresponding to the direct application of RAS on the Leontief inverse matrix. The requisite for obtaining a coherent solution in this case is to work simultaneously with the demand model and the price model.

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Bibliographic Info

Paper provided by IDEGA - Instituto Universitario de Estudios e Desenvolvemento de Galicia in its series Documentos de trabajo - Analise Economica with number 0050.

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Length: 15 pages
Date of creation: Nov 2012
Date of revision:
Handle: RePEc:edg:anecon:0050

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Keywords: matrix updating; input-output; Leontief inverse; RAS;

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  1. Xesús Pereira López & José Luis Quiñoá López & Melchor Fernández Fernández, 2011. "Máximo aprovechamiento de métodos de actualización matricial," Documentos de trabajo - Analise Economica, IDEGA - Instituto Universitario de Estudios e Desenvolvemento de Galicia 0041, IDEGA - Instituto Universitario de Estudios e Desenvolvemento de Galicia.
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