Using a three-steps ras procedure to disaggregate input-output tables: an application to Galicia 2013 make and use tables

Fernando de la Torre Cuevas, University of Santiago de Compostela
AYeconomics-GAME seminars

• Abstract:

When comparing different input-output tables it is important that they present the same
commodity and industry classification. The most common way of achieving this common
classification is to aggregate the available information. By operating this way, relevant
information about the economic structures that are to be analysed can be lost. In the present
work we use a three-steps RAS procedure to disaggregate industrial branches and commodities
in an input-output table. This will allow to encompass the common classification of different
input-output tables while preserving higher degrees of disaggregation. The approach made in
the present investigation in coherent with both the literature about three-steps RAS procedures
and with disaggregation methods. It also presents the advantage of being easy programmable
in everyday life software such as Excel. We apply the proposed methodology in order to estimate
for the region of Galicia both 110 x 72 make and use tables from the officially published 72 x 25
ones. The main features of the resulting tables will be discussed to observe if this way of
proceeding delivers relevant knowledge