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Re: st: technical efficiency using -xtrc-

From   "Scott Merryman" <>
Subject   Re: st: technical efficiency using -xtrc-
Date   Thu, 7 Feb 2008 04:59:29 -0600


If you are interested in deterministic frontier models you might want
to take a look at something like Corrected Ordinary Least Squares or
Modified Ordinary Least Squares. Though, of course, the problem with
such techniques is that any variation in output not related to
variation in inputs is attributed to technical inefficiency.


On Feb 7, 2008 2:27 AM, Viktor Slavtchev <> wrote:
> Scott,
> thank you very much for recommending -frontier-. I am already aware of
> -frontier-.
> I just wanted to compare both alternative way to measure efficiency
> (-xtrc- and -frontier-). Just to see whether there are differences,
> whether the results are 'robust'.
> best regards
> viktor
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