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) – The value of the derivative of the inverse of the negative binomial link Return type:array