TAYLOR PROJECTION: A NEW SOLUTION METHOD FOR DYNAMIC GENERAL EQUILIBRIUM MODELS

Oren Levintal

International Economic Review, 2018, vol. 59, issue 3, 1345-1373

Abstract: This article presents a new solution method for dynamic equilibrium models. The solution is approximated by polynomials that zero the residual function and its derivatives at a given point x0. The algorithm is essentially a type of projection but is significantly faster, since the problem is highly sparse and can be easily solved by a Newton solver. The obtained solution is accurate locally in the neighborhood of x0. Importantly, a local solution can be obtained at any point of the state space. This makes it possible to solve models at points that are further away from the steady state.

Date: 2018
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