[GitHub] [spark] zhengruifeng opened a new pull request #26305: [SPARK-29645][ML][PYSPARK] ML add param RelativeError

[GitBox <gi...@apache.org>]

zhengruifeng opened a new pull request #26305: [SPARK-29645][ML][PYSPARK] ML add param RelativeError
URL: https://github.com/apache/spark/pull/26305
 
 
   ### What changes were proposed in this pull request?
   1, add shared param `relativeError`
   2, `Imputer`/`RobusterScaler`/`QuantileDiscretizer` extend `HasRelativeError`
   
   ### Why are the changes needed?
   It makes sense to expose RelativeError to end users, since it controls both the precision and memory overhead.
   `QuantileDiscretizer` had already added this param, while other algs not yet.
   
   
   
   ### Does this PR introduce any user-facing change?
   yes, new param is added in  `Imputer`/`RobusterScaler`
   
   ### How was this patch tested?
   existing testsutes
   

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