A Back-of-the-Envelope Rule to Identify Atheoretical VARs

Carlos Urzúa

Brazilian Review of Econometrics, 2008, vol. 28, issue 2

Abstract: Vector autoregressive models are often used in Macroeconomics to draw conclusions about the effects of policy innovations. However, those results depend on the researcher’s priors about the particular ordering of the variables. As an alternative, this paper presents a very simple rule based on the maximum entropy principle that can be used to find the “most likely” ordering. The proposal is illustrated in the case of a VAR model of the U.S. economy. It is found that monetary policy shocks are better represented by innovations in the federal funds rate rather than in non-borrowed reserves.

Date: 2008
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Working Paper: A Back-of-the-Envelope Rule to Identify Atheoretical VARs (2007)
Software Item: A Back-of-the-Envelope Rule to Identify Atheoretical VARs (2006)
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Persistent link: https://EconPapers.repec.org/RePEc:sbe:breart:v:28:y:2008:i:2:a:1514

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