[GitHub] [spark] huaxingao opened a new pull request #26774: [SPARK-30146][ML][PySpark] Add setWeightCol to GBTs in PySpark

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

huaxingao opened a new pull request #26774: [SPARK-30146][ML][PySpark] Add setWeightCol to GBTs in PySpark
URL: https://github.com/apache/spark/pull/26774
 
 
   ### What changes were proposed in this pull request?
   add ```setWeightCol``` and ```setMinWeightFractionPerNode``` in Python side of ```GBTClassifier``` and ```GBTRegressor```
   
   
   ### Why are the changes needed?
   https://github.com/apache/spark/pull/25926 added ```setWeightCol``` and ```setMinWeightFractionPerNode``` in GBTs on scala side. This PR will add ```setWeightCol``` and ```setMinWeightFractionPerNode``` in GBTs on python side
   
   
   ### Does this PR introduce any user-facing change?
   Yes
   
   
   ### How was this patch tested?
   doc test
   

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