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VAR help!!

Posted: Mon Oct 26, 2015 9:11 pm
by parulb
Hi,

I am using SVAR and to undertake one short exercise, I need to change few coefficients of my VAR output to zero and then run the SVAR again. However, I am getting the same SVAR output as the baseline every time. My main aim is to compare the baseline IRFs with the constrained IRF (wherein some coefficients of VAR output have been set to zero). Pls advise what to do? Many thanks for your help!! Parul

Re: VAR help!!

Posted: Tue Oct 27, 2015 5:36 am
by trubador
Choose the "Structural Decomposition" option in the Impulse->Impulse Definition tab.

Re: VAR help!!

Posted: Wed Oct 28, 2015 10:24 pm
by parulb
Thanks Trubador for your reply. My question was how to change coefficients in the VAR output which we get? I need to compare the constrained IRF with baseline IRFs. Thanks

Re: VAR help!!

Posted: Fri Oct 30, 2015 5:39 am
by trubador
You cannot change the coefficient of a VAR directly. If you are referring to identifying restrictions, that is called Structural VAR and you should do as I said before. Otherwise, you'll need to estimate a SUR system, which in that case you will loose the functionality of built-in IRF.