Parameter Variance/Covariance
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In LISREL, it is possible to get a matrix of parameter variances and covariances. I need values from this matrix to compute some reliability estimates and am wondering if there is a way to get them from OpenMx. Is this matrix already computed? Is there a good way to access it? I'd appreciate any help!
The parameter
solve(results@output$calculatedHessian)
To be clear, what you're doing is inverting the hessian, which is found in the output slot of 'results' under the heading 'calculatedHessian'.
ryne
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In reply to The parameter by Ryne
Thanks!
I wont have a chance to try this until I get home today, but I'm excited.
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In reply to The parameter by Ryne
Just a quick check. Should it
Should it be 2*solve(results@output$calculatedHessian)?
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In reply to Just a quick check. Should it by Mike Cheung
You're right. Thanks, Mike!
Ian, listen to Mike Cheung. You'll either need to multiply the inverted Hessian by 2 or multiply the uninverted Hessian by 0.5.
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In reply to You're right. Thanks, Mike! by Ryne
Thanks
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