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: understanding ml


From   DTA <altruist81@gmx.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: understanding ml
Date   Wed, 09 Oct 2013 08:40:01 +0200

Dear Statalisters,

I am trying to understand a do file where the underlying data has the variables B1 and B2 which are both equal to 0 for all observations. After the programm -mlblub- is defined, it is used in the -ml- framework in the following way:

-ml model lf mlblub (A1: B1=one, nocons) (A2: B2=one, nocons), maximize search(off) difficult trace init(2 1, copy) technique(dfp)-


I have two directly related questions.
1. What is the function of the B1=one and B2=one terms in the equation?
2. If I run the the -ml- line I get the error message "initial values not feasible" r(1400). Is that because of the 0 values in B1 and B2?

Best,
Darjusch
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


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