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

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  • R G Thumann

    (Centre for Environmental Studies, 62 Chandos Place, London WC2N 4HH, England¶)

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.

Suggested Citation

  • R G Thumann, 1978. "A Comment on “Evaluating the Possibilities for Exchanging Regional Input—Output Coefficientsâ€," Environment and Planning A, , vol. 10(3), pages 321-325, March.
    • Handle: RePEc:sae:envira:v:10:y:1978:i:3:p:321-325
    DOI: 10.1068/a100321
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