statsmodels.genmod.families.links.NegativeBinomial.inverse_deriv

NegativeBinomial.inverse_deriv(z)

Derivative of the inverse of the negative binomial transform

Parameters:

z : array-like

Usually the linear predictor for a GLM or GEE model

Returns:

g^(-1)’(z) : array

The value of the derivative of the inverse of the negative binomial link