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Computational Statistics & Data Analysis
Article . 2006 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Article . 2006
Data sources: zbMATH Open
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Article . 2020
Data sources: DBLP
EconStor
Research . 2004
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Repeated median and hybrid filters

Authors: Roland Fried; Thorsten Bernholt; Ursula Gather;

Repeated median and hybrid filters

Abstract

Standard median filters preserve abrupt shifts (edges) and remove impulsive noise (outliers) from a constant signal but they deteriorate in trend periods. FIR median hybrid (FMH) filters are more flexible and also preserve shifts, but they are much more vulnerable to outliers. Application of robust regression methods, in particular of the repeated median, has been suggested for removing subsequent outliers from a signal with trends. A fast algorithm for updating the repeated median in linear time using quadratic space is given in Bernholt and Fried (2003). We construct repeated median hybrid filters to combine the robustness properties of the repeated median with the edge preservation ability of FMH filters. An algorithm for updating the repeated median is presented which needs only linear space. We also investigate analytical properties of these filters and compare their performance via

Country
Germany
Keywords

drifts, Update algorithm, jumps, outliers, ddc:519, signal extraction, Drifts, Jumps, 310, Inference from stochastic processes and prediction, Signal extraction, Signal extraction,Drifts,Jumps,Outliers,Update algorithm, Outliers, Robustness and adaptive procedures (parametric inference), info:eu-repo/classification/ddc/310, update algorithm

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    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
34
Top 10%
Top 10%
Top 10%
Green
bronze