fe16fd0b8b
Currently OneVsRest use UDF to generate new binary label during training. Considering that [SPARK-7321](https://issues.apache.org/jira/browse/SPARK-7321) has been merged, we can use ```when ... otherwise``` which will be more efficiency. Author: Yanbo Liang <ybliang8@gmail.com> Closes #8519 from yanboliang/spark-10349. |
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