LogL Converged, Parameter Not Converged

From: KRISHNAMURTHY, SUBASH [AG/1000] <subash.krishnamurthy_at_MONSANTO.COM>
Date: Sat, 10 Oct 2009 09:44:49 -0500

 Dear All,


I am trying to fit a linear mixed model for a Group Unbalanced Block
design, and I get a warning message in the .ASR file as "LogL Converged,
Parameters Not converged". I increased the number of iterations from 30
to 100 and still got the same warning message. Then, I changed it to 300
and the model converged. So I thought it is safe to use a big number for
!MAXIT and changed it to 500. I got the same warning message which, I
thought, doesn't make any sense for parameters to converge at 300
iterations but, not with 500 iterations. What could be the reason? The
other question I had is, Should I use !CONTINUE option instead of
increasing the number of iterations. How is it different from increasing
the number of iterations using !MAXIT? What impact does it have on the
run time?


Thanks for your help in this regard,


Best Regards



Subash Krishnamurthy



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Received on Sun Oct 10 2009 - 09:44:49 EST

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