Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: MLE

From   [email protected]
To   [email protected]
Subject   st: MLE
Date   Tue, 7 Jun 2005 12:38:59 -0400

Hi, everyone,

I'm wondering if anyone would be able to describe what the process is when Stata
runs the ml maximize command. I am running Stata 8.2

In particular, in my MLE model, I have included a command to display the
contents of a temporary variable.

If Stata loops through my program one datapoint at a time, I would expect to
seee the contents of this temporary variable for every datapoint in my sample.

However, Stata doesn't seem to do this. In the "zero" iteration, it displays my
variable 13 times. In the first iteration, it displays my variable 16 times. In
the second iteration, 9 times.

What is Stata doing to run this program? Thanks in advance.


Here is my simple MLE program.

capture program drop mylogit3

program mylogit3
	version 8.2
	args todo b lnf
	tempvar theta1 a c
	mleval `theta1' = `b', eq(1)
	quietly gen double `a' = exp(`theta1')/(1+exp(`theta1'))
	quietly gen double `c' =  1/(1+exp(`theta1'))
	di "a = " `a'
	mlsum `lnf' = ln(`a'^($ML_y1) * `c'^(1-$ML_y1))

sort us_id
ml model d0 mylogit3 (indicator = w_rdsalperc)
ml check
ml search
ml maximize

*   For searches and help try:

© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index