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https://issues.apache.org/jira/browse/SPARK-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joseph K. Bradley resolved SPARK-2206.
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Resolution: Duplicate
This issue will be handled in the Pipelines API, where we can have feature
metadata.
> Automatically infer the number of classification classes in multiclass
> classification
> -------------------------------------------------------------------------------------
>
> Key: SPARK-2206
> URL: https://issues.apache.org/jira/browse/SPARK-2206
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Affects Versions: 1.0.0
> Reporter: Manish Amde
> Assignee: Manish Amde
>
> Currently, the user needs to specify the numClassesForClassification
> parameter explicitly during multiclass classification for decision trees.
> This feature will automatically infer this information (and possibly class
> histograms) from the training data.
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