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Re: st: Not concave in xtfrontier


From   "Scott Merryman" <[email protected]>
To   [email protected]
Subject   Re: st: Not concave in xtfrontier
Date   Sat, 14 Jul 2007 04:35:44 -0500

Vinish,

Try using -frontier- not -xtfrontier- with firm and time dummy variables.

Scott


On 7/13/07, vinish kathuria <[email protected]> wrote:
Thanks scott!
I tried a different specification - not in first
differencing:
xtfrontier lnY/L lnK/L Foreign_dmy, tvd

Still for large number of sectors (16 out of total
26), the model is not coverging.

I tried using xtpcse command to get initial values.
Still it is not converging.

Any further suggestion!

Thanks!

Vinish
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