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https://issues.apache.org/jira/browse/SPARK-22331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16214747#comment-16214747
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Nick Pentreath commented on SPARK-22331:
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I can't think of any examples offhand where case sensitivity is required, so it
would make sense to have all params case insensitive if possible. But of course
it should not break current behavior or break save/load of existing models.
> Strength consistency for supporting string params: case-insensitive or not
> --------------------------------------------------------------------------
>
> Key: SPARK-22331
> URL: https://issues.apache.org/jira/browse/SPARK-22331
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Affects Versions: 2.2.0
> Reporter: yuhao yang
> Priority: Minor
>
> Some String params in ML are still case-sensitive, as they are checked by
> ParamValidators.inArray.
> For consistency in user experience, there should be some general guideline in
> whether String params in Spark MLlib are case-insensitive or not.
> I'm leaning towards making all String params case-insensitive where possible.
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