On Mon, 26 Nov 2018, Olasehinde Timmy wrote: If you add the --verbose option to the "mle" command you'll get to see the parameter vector across the iterations even in the case of non-convergence. To be precise, this option goes at the end of the mle block, as in mle loglik = ... ... end mle --verbose You'll then be able to see where the algorithm got stuck. And inspection of the results may suggest an idea for a different initialization of the parameters. Allin Cottrell