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st: RE: -xtmixed- performance problem

From   "Martin Weiss" <>
To   <>
Subject   st: RE: -xtmixed- performance problem
Date   Sat, 11 Sep 2010 15:51:27 +0200


There is a "Maximization" tab in 

db xtmixed

But it is much more likely that the slow iteration points to some problem
with the model you are trying to estimate. 


-----Original Message-----
[] On Behalf Of Hobst
Sent: Samstag, 11. September 2010 14:28
Subject: st: -xtmixed- performance problem

Hello everybody

I want to run the following two-way error component regression in xtmixed,
with cluster robust standard errors

xtmixed y x1 x2 x3 x4 || _all: || datevar:, mle residuals(, by(id))

Without the term residuals(,by(id)) the regression is very fast, but with
the the option included, it did only 2 iterations in 48h. 

Does anybody have any idea, what i could do to speed the regression up? Is
there maybe an option to decrease accuracy or something like that?

Thank you very much for your support.

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