# Re: st: constraints

 From Maarten buis To statalist@hsphsun2.harvard.edu Subject Re: st: constraints Date Wed, 25 Jun 2008 13:18:42 +0100 (BST)

This is illegal syntax, you specify the equation when specifying the
constraint not when estimating the mvprobit model. Reread carefully
-help constraint- and you will see that you have to specify something
like this:

constraint 1 [eq1]north=1
constraint 2 etc.
mvprobit ..., constr(1-some number)

It is up to you to figure out what the correct names of the equations
are (probably not eq1). You can do that by estimating the unconstraint
model and type:
matrix list e(b)

-- Maarten

--- Chiara Mussida <cmussida@gmail.com> wrote:

> constraint 1 north=1
>
> . constraint 2 centre=1
>
> . constraint 2 southislands=1
>
> . mvprobit(UE=sex age xfamsize loweduc compulsory diploma urate
> experience north centre southislands, constraints(1)) (UN=sex age
> married
> > xfamsize loweduc compulsory diploma experience) (UE=sex age
> newdiploma urate experience) (UN=sex age famsize loweduc compulsory
> diploma e
> > xperience) (UE=sex married loweduc compulsory diploma experience)
> (UN=sex age married nodiploma experience), cons(1-3)
> option constraints() not allowed
> r(198);
>  chiara
>
> 2008/6/25 Eva Poen <eva.poen@gmail.com>:
> > Come on, you can figure that one out by yourself.
> >
> > My example has two different equations as well; run it. The
> > constraints I specified are for two different equations, but the
> same
> > variables. You can formulate constraints for different variables,
> of
> > course.
> >
> > If you run into errors, show us the error messages you get.
> >
> > Eva
> >
> >
> >
> > 2008/6/25 Chiara Mussida <cmussida@gmail.com>:
> >> yes, but it is related to the same eq specified w r to 2 different
> cons.
> >> In a mvprobit I have 6 different equations with 6 different
> constraints:
> >> mvprobit (private = years logptax loginc) (vote = years logptax
> >> how could I add different cons to each eq??
> >> Thanks a lot
> >>
> >> 2008/6/25 Eva Poen <eva.poen@gmail.com>:aints.
> >>
> >>> Is this what you are looking for?
> >>>
> >>> webuse sysdsn3
> >>> constraint 1 [Indemnity]site2=1
> >>> constraint 2 [Prepaid]site2=2
> >>> mlogit insure age male site*,  baseoutcome(3) constraints(1-2)
> >>>
> >>> This could have been easily derived from -help constraint-.
> >>> Eva
> >>>
> >>> 2008/6/25 Maarten buis <maartenbuis@yahoo.co.uk>:
> >>>> Than you specify a different constraint for each equation.
> >>>> -- Maarten
> >>>>
> >>>> --- Chiara Mussida <cmussida@gmail.com> wrote:
> >>>>
> >>>>> Sure and Thanks. But it isn't explained how to allow
> >>>>> constraints(different) to different equation. And I'm in
> trouble..
> >>>>> Thanks
> >>>>>
> >>>>> 2008/6/25 Maarten buis <maartenbuis@yahoo.co.uk>:
> >>>>> > --- Chiara Mussida <cmussida@gmail.com> wrote:
> >>>>> >> is there a way to allow the constraints() option to each
> equation
> >>>>> of
> >>>>> >> a multivariate probit?
> >>>>> >
> >>>>> > Yes, -mvprobit- allows constraints, and the way constraints
> can
> >>>>> work
> >>>>> > with multiple equations is discussed in -help constraint-.
> >>>>> >
> >>>>> > -- Maarten
> >>>>> >
> >>>>> > -----------------------------------------
> >>>>> > Maarten L. Buis
> >>>>> > Department of Social Research Methodology
> >>>>> > Vrije Universiteit Amsterdam
> >>>>> > Boelelaan 1081
> >>>>> > 1081 HV Amsterdam
> >>>>> > The Netherlands
> >>>>> >
> >>>>> > Buitenveldertselaan 3 (Metropolitan), room Z434
> >>>>> >
> >>>>> > +31 20 5986715
> >>>>> >
> >>>>> > http://home.fsw.vu.nl/m.buis/
> >>>>> > -----------------------------------------
> >>>>> >
> >>>>> >
> >>>>> >
> __________________________________________________________
> >>>>> > Sent from Yahoo! Mail.
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> >>>>> >
> >>>>>
> >>>>>
> >>>>>
> >>>>> --
> >>>>> Chiara Mussida
> >>>>> PhD candidate
> >>>>> Doctoral school of Economic Policy
> >>>>> Catholic University, piacenza (Italy)
> >>>>> *
> >>>>> *   For searches and help try:
> >>>>> *   http://www.stata.com/support/faqs/res/findit.html
> >>>>> *   http://www.stata.com/support/statalist/faq
> >>>>> *   http://www.ats.ucla.edu/stat/stata/
> >>>>>
> >>>>
> >>>>
> >>>> -----------------------------------------
> >>>> Maarten L. Buis
> >>>> Department of Social Research Methodology
> >>>> Vrije Universiteit Amsterdam
> >>>> Boelelaan 1081
> >>>> 1081 HV Amsterdam
> >>>> The Netherlands
> >>>>
> >>>> Buitenveldertselaan 3 (Metropolitan), room Z434
> >>>>
> >>>> +31 20 5986715
> >>>>
> >>>> http://home.fsw.vu.nl/m.buis/
> >>>> -----------------------------------------
> >>>>
> >>>>
> >>>>      __________________________________________________________
> >>>> Sent from Yahoo! Mail.
> >>>> A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
> >>>> *
> >>>> *   For searches and help try:
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> >>>> *   http://www.stata.com/support/statalist/faq
> >>>> *   http://www.ats.ucla.edu/stat/stata/
> >>>>
> >>> *
> >>> *   For searches and help try:
> >>> *   http://www.stata.com/support/faqs/res/findit.html
> >>> *   http://www.stata.com/support/statalist/faq
> >>> *   http://www.ats.ucla.edu/stat/stata/
> >>>
> >>
> >>
> >>
> >> --
> >> Chiara Mussida
> >> PhD candidate
> >> Doctoral school of Economic Policy
> >> Catholic University, piacenza (Italy)
> >> *
> >> *   For searches and help try:
> >> *   http://www.stata.com/support/faqs/res/findit.html
> >> *   http://www.stata.com/support/statalist/faq
> >> *   http://www.ats.ucla.edu/stat/stata/
> >>
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/support/faqs/res/findit.html
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
> >
>
>
>
> --
> Chiara Mussida
> PhD candidate
> Doctoral school of Economic Policy
> Catholic University, piacenza (Italy)
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------

__________________________________________________________
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*
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