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Re: st: Backed-up message on last iteration


From   Shourjo Chakravorty <shourjo@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Backed-up message on last iteration
Date   Tue, 4 Oct 2011 11:42:43 -0400

I'm sorry I just saw your example. I will try it now.

Thanks again.

On 4 October 2011 11:40, Shourjo Chakravorty <shourjo@gmail.com> wrote:
> Hi Austin,
>
> The method you suggested is exactly what I have been doing. I still
> get the backed-up message on the last iteration when using the
> estimated coef vector as the starting point. Although in this case I
> have the options "partial", "technique()" and "difficult" on. Should I
> turn them off and do the biprobit estimation with the estimated
> coefficient vector as the starting point? And also if these results
> cannot be trusted, should I be checking the gradient vector?
>
> Shourjo
>
> On 4 October 2011 10:18, Austin Nichols <austinnichols@gmail.com> wrote:
>> Shourjo Chakravorty <shourjo@gmail.com> :
>>
>> What happens when you restart -biprobit- without the options, using
>> the estimated coef vector as your starting point?
>>
>> webuse school, clear
>> biprobit private vote logptax loginc years, tech(bfgs)
>> mat b=e(b)
>> biprobit private vote logptax loginc years, from(b)
>>
>> Only you can clarify your confusion.
>>
>> On Mon, Oct 3, 2011 at 10:19 PM, Shourjo Chakravorty <shourjo@gmail.com> wrote:
>>> Btw I am using Stata11.
>>>
>>> On 3 October 2011 22:02, Shourjo Chakravorty <shourjo@gmail.com> wrote:
>>>> Hello,
>>>>
>>>> I am estimating a partially-observable biprobit model with the dfp and
>>>> bfgs techniques.Sometimes I get the "backed-up message" on the last
>>>> iteration. I've read the archives here and it says I can trust the
>>>> results. I am asking because in the book by Gould, Pitblando and Poi
>>>> (2010) "maximum likelihood estimation with stata" it states that I
>>>> cannot trust the results if the last iteration has this message (page
>>>> 20). I am a beginner and would be grateful if someone could clarify my
>>>> confusion.
>>>>
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>>
>

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