
From  Annika Frohloff <afrohloff@gmx.de> 
To  statalist@hsphsun2.harvard.edu 
Subject  st: Coelli 
Date  Thu, 09 Nov 2006 14:34:59 +0100 
I am trying to run production function using stochastic frontier following Coellis approach, but i get information in stata that reads: 'initial values not feasible'.
My expression reads like: frontier lnY lnX1lnXn, distribution(exponential) uhet(efficiency variables: Z1Zn)
What could be the problem withmy expression. Please assist.
Owuor
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