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)