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RE: st: backed up
sun samn <email@example.com>
RE: st: backed up
Mon, 28 Jun 2010 01:46:34 +0800
Thanks for your response. What do you mean by 'iterations being concave'? I did encounter another situation--the same number kept being iterated but cannot converge.
> Date: Sun, 27 Jun 2010 12:07:12 -0500
> Subject: Re: st: backed up
> From: firstname.lastname@example.org
> To: email@example.com
> RTFM on -optimize()-, and on numeric optimization, in general. It
> means that the optimizer had to make the step for the current
> iteration way shorter than what the (reasonably good, in most
> situations) default would have to be. You only need to worry about the
> last few iterations being concave; other than that, the messages only
> serve as warnings that your function is difficult to optimize.
> On Sat, Jun 26, 2010 at 7:13 PM, sun samn wrote:
>> Hi, folks,
>> I did a optimization problem in stata, and I get the following result:
>> : b2=optimize(S)
>> Iteration 0: f(p) = 1.6019994
>> Iteration 1: f(p) = 1.6019994 (backed up)
>> does someone know the meaning of 'backed up'? Is there anyway to fix it?
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> Stas Kolenikov, also found at http://stas.kolenikov.name
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