Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: Streg (gamma): discontinuous region encountered


From   Jana von Stein <janavs@umich.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: Streg (gamma): discontinuous region encountered
Date   Thu, 17 Nov 2011 16:51:19 -0500

Hi --

I am trying to fit a Gamma model to determine which distribution to use in streg. The following happens:

Fitting full model:

Iteration 0:   log pseudolikelihood = -139.27247
Iteration 1:   log pseudolikelihood = -133.40312  (not concave)
Iteration 2:   log pseudolikelihood = -130.07612  (not concave)
Iteration 3:   log pseudolikelihood = -129.51053  (not concave)
Iteration 4:   log pseudolikelihood = -129.43679  (not concave)
Iteration 5:   log pseudolikelihood = -129.37384
cannot compute an improvement -- discontinuous region encountered


Does anyone know what might be going on? Or if there is some other way to do this?

thanks,
Jana
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index