Wojciech Jurczyk created SPARK-13030:
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Summary: Change OneHotEncoder to Estimator
Key: SPARK-13030
URL: https://issues.apache.org/jira/browse/SPARK-13030
Project: Spark
Issue Type: Improvement
Components: ML
Affects Versions: 1.6.0
Reporter: Wojciech Jurczyk
OneHotEncoder should be an Estimator, just like in scikit-learn
(http://scikit-learn.org/stable/modules/generated/sklearn.preprocessing.OneHotEncoder.html).
In its current form, it is impossible to use when number of categories is
different between training dataset and test dataset.
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