nbinom.inverse_deriv()

statsmodels.genmod.families.links.nbinom.inverse_deriv

nbinom.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