SEM: Convergence problem PreviousNext
Mplus Discussion > Structural Equation Modeling >
Message/Author
 Giannis Costa posted on Monday, April 07, 2008 - 8:01 pm
Dear Bengt and Linda Muthen,

I have some convergence problem. I think I should use some starting values. I know, how to do this technically with Mplus, but I do not know which specific value I should define for parameter 29 (see above).
Can you give me some advices how I get the right value? Is there a general rule?

I get following message:
THE STANDARD ERRORS OF THE MODEL PARAMETER ESTIMATES MAY NOT BE TRUSTWORTHY FOR SOME PARAMETERS DUE TO A NON-POSITIVE DEFINITE FIRST-ORDER DERIVATIVE PRODUCT MATRIX. THIS MAY BE DUE TO THE STARTING VALUES BUT MAY ALSO BE AN INDICATION OF MODEL NONIDENTIFICATION. THE CONDITION NUMBER IS 0.306D-17. PROBLEM INVOLVING PARAMETER 29.

Thanks for your answer!

Giannis
 Linda K. Muthen posted on Monday, April 07, 2008 - 8:47 pm
Please send your input, data, output, and license number to support@statmodel.com.
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