Hampel.rho(z)
[source]
The robust criterion function for Hampel’s estimator
Parameters: | z (array-like) – 1d array |
---|---|
Returns: |
rho – rho(z) = (1/2.)*z**2 for |z| <= a rho(z) = a*|z| - 1/2.*a**2 for a < |z| <= b rho(z) = a*(c*|z|-(1/2.)*z**2)/(c-b) for b < |z| <= c rho(z) = a*(b + c - a) for |z| > c |
Return type: | array |
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© 2006–2008 Scipy Developers
© 2006 Jonathan E. Taylor
Licensed under the 3-clause BSD License.
http://www.statsmodels.org/stable/generated/statsmodels.robust.norms.Hampel.rho.html