statsmodels.genmod.families.family.NegativeBinomial.weights¶
- NegativeBinomial.weights(mu)¶
Weights for IRLS steps
- Parameters:
- muarray_like
The transformed mean response variable in the exponential family
- Returns:
- w
ndarray The weights for the IRLS steps
- w
Notes
\[w = 1 / (g'(\mu)^2 * Var(\mu))\]