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https://issues.apache.org/jira/browse/SPARK-3188?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-3188.
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Resolution: Won't Fix
Target Version/s: (was: 1.5.0)
The PR hasn't been updated and this has been pushed across 3 minor versions.
> Add Robust Regression Algorithm with Tukey bisquare weight function
> (Biweight Estimates)
> ------------------------------------------------------------------------------------------
>
> Key: SPARK-3188
> URL: https://issues.apache.org/jira/browse/SPARK-3188
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Fan Jiang
> Assignee: Fan Jiang
> Priority: Minor
> Labels: features
> 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 Tukey bisquare weight function, also referred to as the biweight
> function, produces an M-estimator that is more resistant to regression
> outliers than the Huber M-estimator (Andersen 2008: 19).
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