statsmodels.robust.norms.AndrewWave.weights¶

AndrewWave.weights(z)[source]¶

Andrew的IRLS算法波权重函数

psi 函数按 z 缩放

Parameters:¶

zarray_like

一维数组

Returns:¶

weightsndarray

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

weights(z) = 0 对于 |z| > a*pi