# statsmodels.robust.norms.HuberT.weights¶

HuberT.weights(z)[source]

Huber’s t weighting function for the IRLS algorithm

The psi function scaled by z

Parameters: z (array-like) – 1d array weights – weights(z) = 1 for |z| <= tweights(z) = t/|z| for |z| > t array