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Posted to issues@spark.apache.org by "Fan Jiang (JIRA)" <ji...@apache.org> on 2014/08/23 02:02:12 UTC
[jira] [Closed] (SPARK-3189) Add Robust Regression Algorithm with
Turkey bisquare weight function (Biweight Estimates)
[ https://issues.apache.org/jira/browse/SPARK-3189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fan Jiang closed SPARK-3189.
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Resolution: Duplicate
> Add Robust Regression Algorithm with Turkey bisquare weight function (Biweight Estimates)
> -------------------------------------------------------------------------------------------
>
> Key: SPARK-3189
> URL: https://issues.apache.org/jira/browse/SPARK-3189
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Affects Versions: 1.0.2
> Reporter: Fan Jiang
> Priority: Critical
> Labels: features
> Fix For: 1.1.1, 1.2.0
>
> Original Estimate: 0h
> Remaining Estimate: 0h
>
> Linear least square estimates assume the error has normal distribution and can behave badly when the errors are heavy-tailed. In practical we get various types of data. We need to include Robust Regression to employ a fitting criterion that is not as vulnerable as least square.
> The Turkey bisquare weight function, also referred to as the biweight function, produces and M-estimator that is more resistant to regression outliers than the Huber M-estimator ()Andersen 2008: 19).
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