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st: No convergance?


From   "Christer Thrane" <[email protected]>
To   <[email protected]>
Subject   st: No convergance?
Date   Fri, 16 Dec 2005 12:55:39 +0100

Hi,

I have a panel data set with approximately 5 000 persons surveyed in 12 consecutive years totalling about 60 000 observation/years.

If a regress earnings on gender, age, agesq, exp, gpa, year (the panel identifier; i.e. the time dimension) plus a few dummies for region with the cluster option [cluster(id)], Stata produces the expected results results in about two seconds.

If i ty to estimate:

qreg
bsqreg
clad

on the same variables (ignoring the cluster option) I get:

convergence not achieved
r(430);

I have tried to set # of iterations to 100, 500, 800--nothing helps...

If I try:

xtgls

on the same variables I get:

matsize too small - should be at least 5185
r(908);

Any suggestions?

Christer

I have an updated version of Stata 9. My computer is a Fujitsu Siemens, product scenic e600, i865G
with Intel R Pentium (R) 4 CPU 3.00 GHZ AT/AT COMP. The data is 3 710 kb, matsize is 800 and I have set the memory to 250MB. I have 1 GB Ram.

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