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From | "Newton Cheng" <ncheng@aafp.org> |
To | <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: understanding ml (Out of office: Vacation ) |
Date | Wed, 09 Oct 2013 01:41:01 -0500 |
To whom it may concern, I am out of office. Will get back to your inqury on the week of 9/10/2012 >>> DTA <altruist81@gmx.de> 10/09/13 01:40 >>> 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/ * * 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/