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 – The weights for the IRLS steps
Return type:	array

Notes

\[w = 1 / (g'(\mu)^2 * Var(\mu))\]