RE: st: Unknown number in constraints

[jjc.li@utoronto.ca]

Thanks for the suggestion. Actually, I have finished the estimation of  
the normal translog cost function system. The problem now is some new  
constraints including unknown numbers (never appear in the cost  
function system) need to be added. I have read some papers, but none  
of them was done by stata. So I am posting the problem here to see if  
anybody have done the same thing.

Jingjing



引用 Kieran McCaul <kamccaul@meddent.uwa.edu.au>：

> .
>
> If you Google "translog cost function" and Stata, you'll find links   
> to a lot of work that has been done using Stata.  Maybe you'll find   
> something useful in one of those.  If you do, email one of the   
> authors.
>
>
> Kieran
>
> ______________________________________________
> Kieran McCaul MPH PhD
> WA Centre for Health & Ageing (M573)
> University of Western Australia
> Level 6, Ainslie House
> 48 Murray St
> Perth 6000
> Phone: (08) 9224-2140
> Fax: (08) 9224 8009
> email: kamccaul@meddent.uwa.edu.au
> http://myprofile.cos.com/mccaul
> http://www.researcherid.com/rid/B-8751-2008
> ______________________________________________
> Epidemiology is so beautiful and provides such an important   
> perspective on human life and death,
> but an incredible amount of rubbish is published.  Richard Peto (2007)
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu   
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Maarten   
> buis
> Sent: Tuesday, 10 March 2009 10:57 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: Unknown number in constraints
>
>
>
> -----------------------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
> http://home.fsw.vu.nl/m.buis/
> -----------------------------------------
>
>
> --- On Tue, 10/3/09, jjc.li@utoronto.ca wrote:
> > So you mean use -nl to treat all those a system of
> > nonlinear equations, don't you?
> >
> > I forgot to tell you that what I am donig is seemingly
> > unrelated regression (-sureg-). Does it affect the -nl-
> > method?
>
> I did not understand that you wanted to estimate a system
> of equations. You can't combine -suest- and -nl-, and even
> if you could, you could only use it to impose non-linear
> constraints within each equation, not across equations.
> It might be that somebody has already implemented the model
> you are after, but that is very hard to assertain given the
> information you have given us. If nobody has done so, you
> will have to program it yourself using -ml-, and you'll
> definately need the book I recommended earlier.
>
> -- Maarten
>
>
>
>
>
> *
> *   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/
>
>
> *
> *   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/




*
*   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/