Yanbo Liang created SPARK-10349:
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Summary: OneVsRest use "when ... otherwise" not UDF to generate
new label at binary reduction
Key: SPARK-10349
URL: https://issues.apache.org/jira/browse/SPARK-10349
Project: Spark
Issue Type: Improvement
Components: ML
Reporter: Yanbo Liang
Priority: Minor
Currently OneVsRest use UDF to generate new binary label during training.
Considering that SPARK-7321 has been merged, we can use "when ... otherwise"
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