NegativeBinomial.inverse_deriv()

statsmodels.genmod.families.links.NegativeBinomial.inverse_deriv

NegativeBinomial.inverse_deriv(z) [source]

Derivative of the inverse of the negative binomial transform

Parameters:	z : array-like Usually the linear predictor for a GLM or GEE model
Returns:	The value of the inverse of the derivative of the negative binomial : link :