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st: RE: Frontier,stata 8 & stata 9


From   "Scott Merryman" <smerryman@kc.rr.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Frontier,stata 8 & stata 9
Date   Fri, 9 Jun 2006 17:00:03 -0500

> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-
> statalist@hsphsun2.harvard.edu] On Behalf Of Gauri Khanna
> Sent: Friday, June 09, 2006 4:57 AM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Frontier,stata 8 & stata 9
> 
> 2. I am also running into convergence problems with my frontier
> iterations.
> I decided to assign a lower tolerance level  of ltolerance(1e-4) which
> works
> in stata SE8.1 but refuses to converge when I use stata 9 in the office.
> I
> tried 1e-7 for stata 9 but it did not work either in stata 9. Does anyone
> have a solution to the convergence problem in stata 9?
> 

Have you tried using the difficult option or changing the maximization
algorithm.

Scott



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