[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
st: Maximum-likelihood estimation
I am trying to learn the maximum-likelihood procedure in Stata SE version 8, but am getting error messages when following illustrative examples, one from someone's web site, the other from the Stata manual. Perhaps someone can tell me what I'm doing wrong.
Here is the first example:
program define mylogit
args lnf Xb
replace `lnf' = -ln(1+exp(-`Xb')) if $ML_y1==1
replace `lnf' = -`Xb' -ln(1+exp(-`Xb')) if $ML_y==0
ml model lf mylogit (foreign=mpg weight)
At this point I get the message
What do I need to do to fix the syntax?
New York University
* For searches and help try: