Identifying two technology shocks using long-run restricti

Questions and discussions on Vector Autoregressions
huk_2010
Posts: 2
Joined: Tue Jun 15, 2010 6:01 pm

Identifying two technology shocks using long-run restricti

Unread post by huk_2010 »

Hi,
Does anyone have a RATS code for
(a) identifying two permanent technology shocks using long-run restrictions ( as, for example, in Fisher (2006), "The Dynamic Effects of Neutral and Investment-Specific Shocks", Journal of Political Economy, Vol. 114, pp. 413-451, June 2006)
(b) Computing the conditional correlations between the variables in the trivariate or larger SVAR (similar to that done in the gali_aer.prg in the RATS EXAMPLES, which considers the bi-variate case)

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

Re: Identifying two technology shocks using long-run restricti

Unread post by TomDoan »

The Fisher SVAR can be done simply with %BQFACTOR. The two restrictions are long-run loadings of

x 0 0 0 0
x x 0 0 0

for the I and N shocks respectively, with investment price and labor productivity as the first two variables in the VAR. Since none of the other shocks are of interest, you can finish the factorization by just the long-run loadings:

x 0 0 0 0
x x 0 0 0
x x x 0 0
x x x x 0
x x x x x

which can be computed directly using %BQFACTOR.
huk_2010
Posts: 2
Joined: Tue Jun 15, 2010 6:01 pm

Re: Identifying two technology shocks using long-run restricti

Unread post by huk_2010 »

Thanks Tom. I am modifying the gali.prg file accordingly...
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