On Economic Structures and Model Solution Methods: Or Should Econometricians Use Newton Methods for Model Solution?

Andrew Hughes Hallett and Paul Fisher

Oxford Bulletin of Economics and Statistics, 1990, vol. 52, issue 3, 317-30

Abstract: This paper makes the point that the choice of solution technique for nonlinear equation systems is a matter of trading the potentially smaller number of steps to convergence of formal Newton methods against the substantially smaller computational burden per step offered by simple first-order iterations such as the Gauss-Seidel method. Experiments with six typical macroeconomic models show that tradeoff to be sharply in favor of the latter. Moreover, reordering algorithms reduce all these models to near-recursive structures with relatively few feedback variables. This property is shown to be a natural consequence of the typical structure of an economic model. Copyright 1990 by Blackwell Publishing Ltd

Date: 1990
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