statsmodels.genmod.families.links.NegativeBinomial.deriv¶

NegativeBinomial.deriv(p)[source]¶

负二项变换的导数

Parameters:¶

parray_like

均值参数

Returns:¶

g’(p)ndarray

负二项变换链接函数的导数

注释

g’(x) = 1/(x+alpha*x^2)