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https://issues.apache.org/jira/browse/SPARK-5894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng updated SPARK-5894:
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Summary: Add PolynomialExpansion (was: Add PolynomialMapper)
> Add PolynomialExpansion
> -----------------------
>
> Key: SPARK-5894
> URL: https://issues.apache.org/jira/browse/SPARK-5894
> Project: Spark
> Issue Type: Sub-task
> Components: ML
> Reporter: Xiangrui Meng
> Assignee: Xusen Yin
> Fix For: 1.4.0
>
>
> `PolynomialMapper` takes a vector column and outputs a vector column with
> polynomial feature mapping.
> {code}
> val poly = new PolynomialMapper()
> .setInputCol("features")
> .setDegree(2)
> .setOutputCols("polyFeatures")
> {code}
> It should handle the output feature names properly. Maybe we can make a
> better name for it instead of calling it `PolynomialMapper`.
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