Joseph K. Bradley created SPARK-12375:
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Summary: VectorIndexer: allow unknown categories
Key: SPARK-12375
URL: https://issues.apache.org/jira/browse/SPARK-12375
Project: Spark
Issue Type: Sub-task
Components: ML
Reporter: Joseph K. Bradley
Add option for allowing unknown categories, probably via a parameter like
"allowUnknownCategories."
If true, then handle unknown categories during transform by assigning them to
an extra category index.
The API should resemble the API used for StringIndexer.
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