A Comment on “Evaluating the Possibilities for Exchanging Regional Input—Output Coefficientsâ€

R G Thumann
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R G Thumann: Centre for Environmental Studies, 62 Chandos Place, London WC2N 4HH, England¶

Environment and Planning A, 1978, vol. 10, issue 3, 321-325

Abstract: It is shown that the testing of the applicability of the RAS technique by comparing actual sectoral gross outputs of a region A with sectoral gross outputs derived from an input–output table of another region B, after the table has been RAS-adjusted to the input–output table of region A, is not a valid procedure. A similar argument holds when this kind of test is applied in a forecasting context where the projected values of sectoral gross outputs of region A are assumed to yield the true estimates. Finally a suggestion is made as to what might be a fruitful way of improving constrained matrix-adjustment techniques.

Date: 1978
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Persistent link: https://EconPapers.repec.org/RePEc:sae:envira:v:10:y:1978:i:3:p:321-325

DOI: 10.1068/a100321

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