Arbeitspapier

On approximating DSGE models by series expansions

We show how to use a simple perturbation method to solve non-linear rational expectation models. Drawing from the applied mathematics literature we propose a method consisting of series expansions of the non-linear system around a known solution. The variables are represented in terms of their orders of approximation with respect to a perturbation parameter. The final solution, therefore, is the sum of the different orders. This approach links to formal arguments the idea that each order of approximation is solved recursively taking as given the lower order of approximation. Therefore, this method is not subject to the ambiguity concerning the order of the variables in the resulting state-space representation as, for example, has been discussed by Kim et al. (2008). Provided that the model is locally stable, the approximation technique discussed in this paper delivers stable solutions at any order of approximation.

Sprache
Englisch

Erschienen in
Series: ECB Working Paper ; No. 1264

Klassifikation
Wirtschaft
Computational Techniques; Simulation Modeling
Thema
Non-linear difference equations
Perturbation methods
Series expansions
Solving dynamic stochastic general equilibrium models
Nichtlineare Dynamik
Rationale Erwartung
Dynamisches Gleichgewicht
Iteratives Verfahren
Theorie

Ereignis
Geistige Schöpfung
(wer)
Lombardo, Giovanni
Ereignis
Veröffentlichung
(wer)
European Central Bank (ECB)
(wo)
Frankfurt a. M.
(wann)
2010

Handle
Letzte Aktualisierung
10.03.2025, 11:43 MEZ

Datenpartner

Dieses Objekt wird bereitgestellt von:
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.

Objekttyp

  • Arbeitspapier

Beteiligte

  • Lombardo, Giovanni
  • European Central Bank (ECB)

Entstanden

  • 2010

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