def deriv2(self, p):
    "\n        Second derivative of the log transform link function\n\n        Parameters\n        ----------\n        p : array_like\n            Mean parameters\n\n        Returns\n        -------\n        g''(p) : ndarray\n            Second derivative of log transform of x\n\n        Notes\n        -----\n        g''(x) = -1/x^2\n        "
    p = self._clean(p)
    return ((- 1.0) / (p ** 2))
Second derivative of the log transform link function

Parameters
----------
p : array_like
    Mean parameters

Returns
-------
g''(p) : ndarray
    Second derivative of log transform of x

Notes
-----
g''(x) = -1/x^2
def deriv2(self, p):
    "\n        Second derivative of the log transform link function\n\n        Parameters\n        ----------\n        p : array_like\n            Mean parameters\n\n        Returns\n        -------\n        g(p) : ndarray\n            Second derivative of log transform of x\n\n        Notes\n        -----\n        g(x) = -1/x^2\n        "
    p = self._clean(p)
    return ((- 1.0) / (p ** 2))