estimation with random walk

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estimation with random walk

Postby alexnomad » Thu Mar 19, 2009 1:57 pm

Hello all.
I am trying to estimate by maximum likelihood model which includes random walk equation. When optimization starts dynare stack on the same value function in iterations and shows NaN in each iteration. How effectively I can estimate this model ? Thanks a lot in advance
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Re: estimation with random walk

Postby StephaneAdjemian » Thu Mar 19, 2009 2:09 pm

There is a detailed example in the Dynare user guide (chapter six).

Stéphane.
Stéphane Adjemian
Université du Maine, GAINS and DynareTeam
https://stepan.adjemian.eu
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Re: estimation with random walk

Postby iacoviel » Thu Mar 19, 2009 6:59 pm

There is some issue when one uses Dynare 4 to estimate a model with unit roots + deterministic trends + measurement error. One workaround is to treat measurement errors as additional shocks to the observation equations inside the model block. I posted a message a while ago but noone answered :cry:
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