statsmodels.genmod.families.links.nbinom.inverse_deriv¶
-
nbinom.
inverse_deriv
(z)¶ Derivative of the inverse of the negative binomial transform
- Parameters
- zarray_like
Usually the linear predictor for a GLM or GEE model
- Returns
- g^(-1)’(z)
ndarray
The value of the derivative of the inverse of the negative binomial link
- g^(-1)’(z)