Actualización de la Inversa de Leontief mediante el método RAS

  1. Pereira López, Xesús 1
  2. Quiñoá López, Xosé Luís 1
  3. Carrascal Incera, André 1
  1. 1 Universidade de Santiago de Compostela
    info

    Universidade de Santiago de Compostela

    Santiago de Compostela, España

    ROR https://ror.org/030eybx10

Journal:
Anales de ASEPUMA

ISSN: 2171-892X

Year of publication: 2012

Issue: 20

Type: Article

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Abstract

There are many techniques for updating matrices, including the basic RAS and its extensions. The RAS is a biproporcional method of adjustment, which consists in repeatedly multiply the elements of the rows and columns in a matrix by correction coefficients. This technique is almost always used on the technical coefficients matrix (or the intermediate consumption matrix), but can also be adapted to other contexts. It can take different formulations; in fact, it is usually expressed as an optimization program which minimizes the distance between matrices subject to some restrictions. This paper presents the algorithm of scale that corresponds to the direct application of RAS to the Leontief inverse. In the process, it is necessary to work simultaneously with the demand and pricing models to achieve a coherent solution.

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