Redescending M-estimator
id:
redescending-m-estimator-306-3980597
title:
Redescending M-estimator
text:
In statistics, redescending M-estimators are Ψ-type M-estimators which have ψ functions that are non-decreasing near the origin, but decreasing toward 0 far from the origin. Their ψ functions can be chosen to redescend smoothly to zero, so that they usually satisfy ψ(x) = 0 for all x with |x| > r, where r is referred to as the minimum rejection point. Due to these properties of the ψ function, these kinds of estimators are very efficient, have a high breakdown point and, unlike other outlier rej
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original url:
https://en.wikipedia.org/wiki/Redescending_M-estimator
date created:
date modified:
2024-04-18T03:54:35Z
main entity:
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