calculating likelihood

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FinleyWhite
Posts: 1
Joined: Fri May 18, 2018 5:58 am

calculating likelihood

Post by FinleyWhite » Fri May 18, 2018 6:03 am

Hallo
I fited a 3 level model (level 1: time level, level 2: individual level, level 3: class level) for a longitudinal study with
random slopes. The gains over time vary on class and on individual level......
Unfortunaly i get the following error message after calculating the model concerning the 2*loglikelihood: "numerical error calculating likelihood".
Could anyone tell me whats the problem? Is it a serious problem?

ChrisCharlton
Posts: 989
Joined: Mon Oct 19, 2009 10:34 am

Re: calculating likelihood

Post by ChrisCharlton » Mon May 21, 2018 11:57 am

This would normally suggest an estimation problem. Do the model parameters converge, and do they look sensible for your data? If you simplify the model is it able to calculate a likelihood?

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