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https://issues.apache.org/jira/browse/SPARK-9137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14631890#comment-14631890
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Joseph K. Bradley commented on SPARK-9137:
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More notes: Changing title to be for Classifier only since we don't really need
to check it for regression.
Also, just noting that this should be as lightweight as possible, happening in
a UDF or map so that it can be pipelined without causing an extra RDD action.
> Unified label verification for Predictor
> ----------------------------------------
>
> Key: SPARK-9137
> URL: https://issues.apache.org/jira/browse/SPARK-9137
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Yanbo Liang
> Assignee: Yanbo Liang
>
> We should to check label valid before training model for ml.predictor such as
> LogisticRegression, NaiveBayes, etc. We can make this check at
> extractLabeledPoints. Some models do this check during training step at
> present and we need to unified them.
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