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From   george owuor <gowuor2001@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Date   Thu, 9 Nov 2006 03:48:23 -0800 (PST)

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 lnX1------------------lnXn, distribution(exponential) uhet(efficiency variables: Z1--------Zn)

What could be the problem withmy expression. Please assist.

Owuor



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