The Choice of Model in the Construction of Input-Output Coefficients Matrices

The construction of input-output coefficients on the basis of flow data is complicated by the presence of secondary outputa.Seven methods to deal with this problea coexist.For example, the U.S. input-output requirementa tables are based on the so called industry technology model, Japan adopta the so called Stone method, while the tablea of the Federal Republic of German,y are based on the ao called commodity technology model.This paper aettlea the choice of model on the ground of theory.It postulatea invariance and balenCe axioms and proceeda to characterize one of the methoda to conatruct inputoutput ccefficients.The comaodity technology model i s aingled out.