[R] Optim()
wasss
deichkinds at gmx.net
Sat Sep 29 09:17:35 CEST 2012
Hello,
I have some problems regarding the function optim. In my simulations I
generate negative binomial data and get estimates of the parameter using
the likelihood and the package optim. At some point there appears the
warning:
- non-finite finite-difference value []
I think it occurs, when the shape converges ->0 (no overdispersion). Is
there an explanation for this and how do I handle it, because the
simulations stops in this step.
Thanks
wasss
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