Checking for Saddlepoint Stability: An Easy Test

Raouf Boucekkine () and Cuong Le van

Computational Economics, 1996, vol. 9, issue 4, 317-30

Abstract: In this paper we present a theoretically founded procedure in order to check for saddlepoint stability of rational expectations models. The proposed device uses some specific perturbed finite time approximations of the models and allows for an explicit theoretical foundation. Numerical evidence are presented to study the feasibility of the procedure regarding to the scales and the spectra of the models. In particular, it is shown how to apply it on nonlinear models in connection with relaxation resolution algorithms. Actually, this paper gives theoretical basis to the heuristic sensitivity tests traditionally conducted for saddlepoint stability assessment. Citation Copyright 1996 by Kluwer Academic Publishers.

Date: 1996
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