Page 1 of 1

marginal likelihood

PostPosted: Tue Mar 10, 2009 10:48 am
by musmic
Hi all,

I am trying to estimate a small open economy model using Bayesian method. I obtain some reasonable estimates of parameters but the marginal likelihood obtained (using Laplace approximation or harmonic mean estimator) is positive rather than negative. Does this imply something is wrong with the model or estimation?

Thank you so much!

Musmic

Re: marginal likelihood

PostPosted: Sat Mar 14, 2009 12:57 pm
by StephaneAdjemian
Hi Musmic, The answer is no. Dynare reports the logarithm of the marginal density. The (logged) density of the sample, depending on the model and/or the sample, can be positive or negative. The absolute level of this density is not really informative.

Best, Stéphane.

Re: marginal likelihood

PostPosted: Sun Mar 15, 2009 5:55 am
by musmic
Hi Stephane,

Many thanks! Your information is very useful.

Musmic