Dear list members,
when running ML optimization of constrained models using BiSSE, I get
the following error message for one optimization:
fit.l5 <- find.mle(lik.l5, p_ML[argnames(lik.l5 )])
error in all.branches.matrix(pars, cache, initial.conditions, branches,
: , Bad initial conditions: calculation failure along branches?
I quite don't understand why I get this error message nor how to fix it.
I used ML estimates of the full model as starting points.
Any idea to figure out the problem would be greatly
acknowledged....although it's friday :) !!
Thanks and best regards,
Lena
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