7.2.3.3.6.8. statsmodels.genmod.families.family.NegativeBinomial.weights

NegativeBinomial.weights(mu)

Weights for IRLS steps

Parameters:

mu : array-like

The transformed mean response variable in the exponential family

Returns:

w : array

The weights for the IRLS steps

Notes

w = 1 / (link’(mu)**2 * variance(mu))