Change order in BQ decomposition with %psdfactor

Questions and discussions on Vector Autoregressions
rjmendezm
Posts: 3
Joined: Mon Sep 26, 2022 5:15 am

Change order in BQ decomposition with %psdfactor

Unread post by rjmendezm »

Hi,

I wonder wheter it makes sense using %psdfactor to change the order in a BQ decomposition, that is, something like:

bqfactor = Phi(1)*%psdfactor(inv(Phi(1))*Sigma*tr(inv(Phi(1))),||1,3,5,2,4||)




Thanks in Advance fro the help,

Rodolfo
TomDoan
Posts: 7814
Joined: Wed Nov 01, 2006 4:36 pm

Re: Change order in BQ decomposition with %psdfactor

Unread post by TomDoan »

You can, though I would recommend using @ShortAndLong. It's hard to come up with an (economically) reasonable set of long-run only restrictions to identify a five variable system.
rjmendezm
Posts: 3
Joined: Mon Sep 26, 2022 5:15 am

Re: Change order in BQ decomposition with %psdfactor

Unread post by rjmendezm »

TomDoan wrote:You can, though I would recommend using @ShortAndLong. It's hard to come up with an (economically) reasonable set of long-run only restrictions to identify a five variable system.
Great, thank you !
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