statsmodels.genmod.families.links.Log.deriv2¶

Log.deriv2(p)[source]¶

Second derivative of the log transform link function

Parameters:¶

p : array_like¶

Mean parameters

Returns:¶

g’’(p) – Second derivative of log transform of x

Return type:¶

ndarray

Notes

g’’(x) = -1/x^2