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https://issues.apache.org/jira/browse/SPARK-43516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17728273#comment-17728273
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ASF GitHub Bot commented on SPARK-43516:
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User 'WeichenXu123' has created a pull request for this issue:
https://github.com/apache/spark/pull/41420
> Basic estimator / transformer / model / evaluator interfaces and basic
> transformer / evaluator implementation
> -------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-43516
> URL: https://issues.apache.org/jira/browse/SPARK-43516
> Project: Spark
> Issue Type: Sub-task
> Components: Connect, ML, PySpark
> Affects Versions: 3.5.0
> Reporter: Weichen Xu
> Assignee: Weichen Xu
> Priority: Major
> Fix For: 3.5.0
>
>
> * Define basic interfaces of Evaluator / Transformer / Model / Evaluator,
> these interfaces are designed to support both spark connect and legacy spark
> mode, and are designed to support train / transform / evaluate over either
> spark dataframe or pandas dataframe
> * Implement a feature transformer {{{}MaxAbsScaler{}}}, {{ScalerScaler}}
> * Implement a regressor evaluator {{RegressorEvaluator}} that supports MSE
> and R2 metric evaluation
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