Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/119420 
Year of Publication: 
2015
Series/Report no.: 
SFB 649 Discussion Paper No. 2015-014
Publisher: 
Humboldt University of Berlin, Collaborative Research Center 649 - Economic Risk, Berlin
Abstract: 
The Reversible Jump Markov Chain Monte Carlo (RJMCMC) method can enhance Bayesian DSGE estimation by sampling from a posterior distribution spanning potentially nonnested models with parameter spaces of different dimensionality. We use the method to jointly sample from an ARMA process of unknown order along with the associated parameters. We apply the method to the technology process in a canonical neoclassical growth model using post war US GDP data and find that the posterior decisively rejects the standard AR(1) assumption in favor of higher order processes. While the posterior contains significant uncertainty regarding the exact order, it concentrates posterior density on hump-shaped impulse responses. A negative response of hours to a positive technology shock is within the posterior credible set when noninvertible MA representations are admitted.
Subjects: 
Bayesian analysis
Dynamic stochastic general equilibrium model
Model evaluation
ARMA
Reversible Jump Markov Chain Monte Carlo
JEL: 
C11
C32
C51
C52
Document Type: 
Working Paper

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