statsmodels.genmod.families.family.InverseGaussian.starting_mu

InverseGaussian.starting_mu(y)

Starting value for mu in the IRLS algorithm.

Parameters

y : ndarray

The untransformed response variable.

Returns

mu_0 : ndarray

The first guess on the transformed response variable.

Notes

\[\mu_0 = (Y + \overline{Y})/2\]

Only the Binomial family takes a different initial value.