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https://issues.apache.org/jira/browse/SPARK-3278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14377205#comment-14377205
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Xiangrui Meng commented on SPARK-3278:
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Did you try truncating the digits of x to reduce the number of possible
buckets? If the loss of precision is not super important, this could help
scalability.
> Isotonic regression
> -------------------
>
> Key: SPARK-3278
> URL: https://issues.apache.org/jira/browse/SPARK-3278
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Xiangrui Meng
> Assignee: Martin Zapletal
> Fix For: 1.3.0
>
>
> Add isotonic regression for score calibration.
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