statsmodels.genmod.families.links.NegativeBinomial.deriv

NegativeBinomial.deriv(p)

Derivative of the negative binomial transform

Parameters:

p (array_like) – Mean parameters

Returns:

g’(p) – The derivative of the negative binomial transform link function

Return type:

ndarray

Notes

g’(x) = 1/(x+alpha*x^2)