statsmodels.robust.norms.AndrewWave.weights

AndrewWave.weights(z)[source]

Andrew’s wave weighting function for the IRLS algorithm

The psi function scaled by z

Parameters:
zarray_like

1d array

Returns:
weightsndarray

weights(z) = sin(z/a) / (z/a) for |z| <= a*pi

weights(z) = 0 for |z| > a*pi


Last update: Dec 23, 2024