statsmodels.genmod.families.family.Poisson.weights

Poisson.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:

ndarray

Notes

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