statsmodels.genmod.families.links.Cauchy.inverse_deriv¶

Cauchy.inverse_deriv(z)¶

Derivative of the inverse link function

Parameters:¶

zndarray

The inverse of the link function at p

Returns:¶

g^(-1)’(z)ndarray

The value of the derivative of the inverse of the logit function. This is just the pdf in a CDFLink,