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https://issues.apache.org/jira/browse/SPARK-4256?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14199103#comment-14199103
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Apache Spark commented on SPARK-4256:
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User 'abull' has created a pull request for this issue:
https://github.com/apache/spark/pull/3118
> MLLib BinaryClassificationMetricComputers try to divide by zero
> ---------------------------------------------------------------
>
> Key: SPARK-4256
> URL: https://issues.apache.org/jira/browse/SPARK-4256
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Reporter: Andrew Bullen
>
> MLLib BinaryClassificationMetricComputers try to divide by zero in cases
> where there are no positive or negative examples. Resulting in NaNs in
> metrics.
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