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https://issues.apache.org/jira/browse/SPARK-14164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212337#comment-15212337
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Apache Spark commented on SPARK-14164:
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User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/11964
> Improve input layer validation to MultilayerPerceptronClassifier
> ----------------------------------------------------------------
>
> Key: SPARK-14164
> URL: https://issues.apache.org/jira/browse/SPARK-14164
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Dongjoon Hyun
> Priority: Minor
>
> This issue improves an input layer validation and related testcases to
> MultilayerPerceptronClassifier.
> {code:title=MultilayerPerceptronClassifier.scala|borderStyle=solid}
> - // TODO: how to check ALSO that all elements are greater than 0?
> - ParamValidators.arrayLengthGt(1)
> + (t: Array[Int]) => t.forall(ParamValidators.gt(0)) && t.length > 1
> {code}
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