statsmodels.genmod.families.links.inverse_squared.inverse_deriv2

method

inverse_squared.inverse_deriv2(z)

Second derivative of the inverse of the power transform

Parameters:

z : array-like

z is 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 power transform

function