Dynare forums

Forums for asking questions, posting comments and uploading examples related to Dynare

Skip to content

question about the number of mh draws

This forum is closed. You can read the posts but cannot write. We have migrated the forum to a new location where you will have to reset your password.
Forum rules
This forum is closed. You can read the posts but cannot write. We have migrated the forum to a new location (https://forum.dynare.org) where you will have to reset your password.
Topic locked

question about the number of mh draws

Postby jkh » Sat Sep 12, 2015 8:38 am

I set mh_replic=10000. Acceptance rate happened to be 20%.

Then, I guess that the number of final draws is 2000.

But, actually, the number of draws in "filename_mh_blc.mat" files in metropolis folder is 10000.


Thank you for reply in advance.
jkh
 
Posts: 20
Joined: Thu Jun 25, 2015 10:15 am
Top

Re: question about the number of mh draws

Postby jpfeifer » Sat Sep 12, 2015 11:36 am

You are misunderstanding the working of the Metropolis-Hastings algorithm. It provides correlated draws from the posterior (see Chib/Greenberg 1995 for a good introduction). When a draw is rejected, the old draw becomes the new draw. That's why there are always as many draws as specified.
------------
Johannes Pfeifer
University of Cologne
https://sites.google.com/site/pfeiferecon/
jpfeifer
 
Posts: 6940
Joined: Sun Feb 21, 2010 4:02 pm
Location: Cologne, Germany
Top
Topic locked

Return to Dynare help

Who is online

Users browsing this forum: No registered users and 9 guests

Powered by phpBB® Forum Software © phpBB Group