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:¶

wndarray

The weights for the IRLS steps

Notes

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