Xiangrui Meng created SPARK-5894:
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Summary: Add PolynomialMapper
Key: SPARK-5894
URL: https://issues.apache.org/jira/browse/SPARK-5894
Project: Spark
Issue Type: Sub-task
Components: ML
Reporter: Xiangrui Meng
`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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