Study week on the econometric approach to development planning

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Monograph

Identifikator:: 1824422792

URN:: urn:nbn:de:zbw-retromon-217476

Document type:: Monograph

Title:: Study week on the econometric approach to development planning

Place of publication:: Amsterdam [u.a.]

Publisher:: North-Holland Publ. Co. [u.a.]

Year of publication:: 1965

Scope:: XLVII, 1259 S.; graph. Darst.

Digitisation:: 2022

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: Spatial organization and regional planning: Some hypotheses for econometric analysis / Walter Isard, Department of regional Science - University of Pennsylvania Philadelphia, Penn. - U.S.A.

Collection:: Economics Books

DISCUSSION FISHER [ have only a minor comment on Professor ISARD’s paper, it is in connection with his use of weights, He uses an expression in which W, and Ww, appear as weights; however, there is nothing about W, which is specific to i or Ww. which is specific to 4 in that ex- pression, since the form of the expression in fact allows these to be interchanged and the wrong weights applied to the two items. The W, and Ww, therefore ought not to be referred to as weights in the strict sense. On the other hand, IsARD uses these in obtaining a weighted sum of items, the sum being taken over all pairs i and 7. When that is done it is the case that W, appears in every pair involving CD, and W, appears in every pair involving CD, Thus each pair receives a weight equal to the product of W, and W, and it is these products which should be considered as weights. It is thus true that W. is specific to ‘ and W *o 4 although only the pairs are use’ TSARD Professor FISHER is correct in the context in which he speaks However, in much of the literature using gravity models, 1! Wel us W. and W, are used singly, and not ‘» produc form This + ‘he reason I do so throuchout mv manuse= Isard pag. 27

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