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Data steps ,

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Occasional Contributor
Posts: 14

Data steps ,


Hello everybody ,

1) I have this message in my log , after usinf proc mi if anyone may tell me about it


"WARNING: The EM algorithm (MLE) fails to converge after 200 iterations. You can increase the

         number of iterations (MAXITER= option) or increase the value of the convergence

         criterion (CONVERGE= option).

WARNING: The EM algorithm (posterior mode) fails to converge after 200 iterations. You can

         increase the number of iterations (MAXITER= option) or increase the value of the

         convergence criterion (CONVERGE= option)."

2 ) I have 500 variables in my datasets and I wish to work with 10variables only , and I specified the 10 ten variables and I have the same results

Thank advance for your replies

Super Contributor
Posts: 282

Re: Data steps ,

Hi,

This warning has been mentioned in the forums a few times, but no answer seems to have been reached:

https://communities.sas.com/community/support-communities/search.jspa?peopleEnabled=true&userID=&con...

If you don't get any responses then it might be worth contacting SAS Technical Support.

Regards,

Amir.

SAS Super FREQ
Posts: 8,739

Re: Data steps ,

...And, searching Tech Support for relevant notes seems to indicate that the message is procedure dependent. I found notes about PROC NLIN and PROC GENMOD (paper).

cynthia

22969 - Why does my nonlinear model fail to converge? How can I get it to converge?

http://www2.sas.com/proceedings/sugi28/270-28.pdf

Trusted Advisor
Posts: 1,204

Re: Data steps ,

I think some of the variables being used for this analysis are highly correlated. Please check correlation among 10 variables and retain only uncorrelated variables for this analysis. I hope this will solve the problem.

Regards,

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