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Mind your ps and qs! Improving ARMA forecasts with RBC priors

  • Lees, Kirdan
  • Matheson, Troy

We utilise prior information from a simple RBC model to improve ARMA forecasts of post-war US GDP. We develop three alternative ARMA forecasting processes that use varying degrees of information from the Campbell (1994) flexible labour model. Directly calibrating the model produces poor forecasting performance whereas a model that uses a Bayesian framework to take the model to the data, yields forecasting performance comparable to a purely statistical ARMA process. A final model that uses theory only to restrict the order of the ARMA process (the ps and qs), but that estimates the ARMA parameters using maximum likelihood, yields improved forecasting performance.

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Article provided by Elsevier in its journal Economics Letters.

Volume (Year): 96 (2007)
Issue (Month): 2 (August)
Pages: 275-281

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Handle: RePEc:eee:ecolet:v:96:y:2007:i:2:p:275-281
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