statsmodels.genmod.families.links.Log¶

class statsmodels.genmod.families.links.Log[source]¶

The log transform

Notes

call and derivative call a private method _clean to trim the data by machine epsilon so that p is in (0,1). log is an alias of Log.

Methods

__call__(p, **extra)

Log transform link function

Methods

deriv(p)	Derivative of log transform link function
deriv2(p)	Second derivative of the log transform link function
inverse(z)	Inverse of log transform link function
inverse_deriv(z)	Derivative of the inverse of the log transform link function
inverse_deriv2(z)	Second derivative of the inverse link function g^(-1)(z).