I’m running this model
genlinmixed /fields target=ngrants/target_options distribution=poisson link=log/
fixed effects=wave cohort use_intercept=true/
random use_intercept=true effects=wave subjects=rid
covariance_type=unstructured.
I’m getting this message
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Warnings
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glmm: There is at least one invalid record in the last iteration. A record is invalid if there are errors in computing the inverse LOG link function, the log-likelihood, the gradient,
or the Hessian matrix in the iterative process. No output will be displayed.
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Execution of this command stops.
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I’m confused by the “at least one invalid record” statement. I’d like to know what that statement means because it seems different,
implies a different problem, from saying that “X” matrix is non-positive definite.
Thanks, Gene Maguin
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