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https://issues.apache.org/jira/browse/SPARK-13508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15169002#comment-15169002
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Sean Owen commented on SPARK-13508:
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Why would you do this? just take the sqrt of the values in the vector you get.
This is a bad way to do it.
> For direct retrival of Standard Deviation for Anlaytics
> -------------------------------------------------------
>
> Key: SPARK-13508
> URL: https://issues.apache.org/jira/browse/SPARK-13508
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Environment: Operating System:ubuntu
> Software : Spark
> Harware Specification:Normal
> Reporter: Sidharth Rajeev
> Priority: Minor
> Labels: easyfix, newbie
> Original Estimate: 0.05h
> Remaining Estimate: 0.05h
>
> As part of easying up the analytical capabilities, I would like to add the
> standard deviation as such. As of now variance is directly available. Its
> square root will give the standard deviation. But as direct functionality it
> will save the time of the data analysts/scientists.
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