shock_decomposition vs conditional_variance_decomposition

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shock_decomposition vs conditional_variance_decomposition

Postby ilobayesian » Fri May 17, 2013 9:30 am

Dear All,

Could someone clarify what is the difference between the two commands "shock_decomposition" and "conditional_variance_decomposition"?

Thanks!
ilobayesian
 
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Re: shock_decomposition vs conditional_variance_decompositio

Postby jpfeifer » Fri May 17, 2013 6:04 pm

conditional_variance_decomposition performs a forecast error variance decomposition at the specified horizons, i.e. it tells you for example how much of the variance of output is driven by TFP shocks.

shock_decomposition uses the Kalman smoother to compute the most likely shock realizations that lead to the observed values of the data, e.g. at time t=1, 50% of output deviation from steady state is due to a positive technology shock and 50% due to a monetary policy shock.
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Johannes Pfeifer
University of Cologne
https://sites.google.com/site/pfeiferecon/
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