def deriv(self, p):
    "\n        Derivative of CDF link\n\n        Parameters\n        ----------\n        p : array_like\n            mean parameters\n\n        Returns\n        -------\n        g'(p) : ndarray\n            The derivative of CDF transform at `p`\n\n        Notes\n        -----\n        g'(`p`) = 1./ `dbn`.pdf(`dbn`.ppf(`p`))\n        "
    p = self._clean(p)
    return (1.0 / self.dbn.pdf(self.dbn.ppf(p)))
Derivative of CDF link

Parameters
----------
p : array_like
    mean parameters

Returns
-------
g'(p) : ndarray
    The derivative of CDF transform at `p`

Notes
-----
g'(`p`) = 1./ `dbn`.pdf(`dbn`.ppf(`p`))
def deriv(self, p):
    "\n        Derivative of CDF link\n\n        Parameters\n        ----------\n        p : array_like\n            mean parameters\n\n        Returns\n        -------\n        g'(p) : ndarray\n            The derivative of CDF transform at `p`\n\n        Notes\n        -----\n        g'(`p`) = 1./ `dbn`.pdf(`dbn`.ppf(`p`))\n        "
    p = self._clean(p)
    return (1.0 / self.dbn.pdf(self.dbn.ppf(p)))