AndrewWave.
weights
Andrew’s wave weighting function for the IRLS algorithm
The psi function scaled by z
z : array-like
1d array
weights : array
weights(z) = sin(z/a)/(z/a) for |z| <= a*pi weights(z) = 0 for |z| > a*pi
weights(z) = sin(z/a)/(z/a) for |z| <= a*pi
weights(z) = 0 for |z| > a*pi
statsmodels.robust.norms.AndrewWave.rho
statsmodels.robust.norms.Hampel
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