I'm using Latent Gold Choice to estimante a LC model. The model performs well when up to three classes are considered. However, when I try with four classes I got a message of no convergence ("estimation procedure did not converge, 25 gradients larger than 1.0E-3) and maximum number of iterations reached without convergence. Anybody knows the possible reasons? Mis-specification of the model? A large number of observations (in my case 250000 obs)? Something else?

Thank you

  • $\begingroup$ I'm just guessing here, but have you tried standardizing your variables? $\endgroup$ – pir Apr 19 '16 at 17:36
  • $\begingroup$ yes, I've already done! $\endgroup$ – Andrea Apr 19 '16 at 18:03

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