bachmannpatrick/CLVTools

Estimation Failed with NA coefficients

Closed this issue · 2 comments

ZhenoSan commented

Hello, thanks for making this awesome packa.ge

I keep getting this error on all the models.

"Warning: Estimation failed with NA coefficients. The returned object contains results but further usage is restricted. You might want to try to fit the model again with method Nelder-Mead (using optimx.args=list(method="Nelder-Mead")) or try different starting values. See examples.
Warning: Hessian could not be derived. Setting all entries to NA."

Not sure how to proceed or debug the problem?

bachmannpatrick commented

Hi,

The model could not be fitted to your data. This can have different causes. Most likely it is a data issue. Have a look at discussion #132.

Best,
Patrick

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mmeierer commented

@ZhenoSan: Thanks for using CLVTools. To be able to provide help, please follow the general guidelines for asking questions as outlined on SO (https://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example). Otherwise, it is really quite difficult to understand what is going on and we can only speculate.

  • 👍1