method
NegativeBinomial.
inverse_deriv
Derivative of the inverse of the negative binomial transform
Usually the linear predictor for a GLM or GEE model
The value of the derivative of the inverse of the negative binomial link
statsmodels.genmod.families.links.NegativeBinomial.inverse
statsmodels.genmod.families.links.NegativeBinomial.inverse_deriv2