GitHub user imatiach-msft opened a pull request:

    https://github.com/apache/spark/pull/17084

    [SPARK-18693][ML][MLLIB] ML Evaluators should use weight column - added 
weight column for binary classification evaluator

    ## What changes were proposed in this pull request?
    
    The evaluators BinaryClassificationEvaluator, RegressionEvaluator, and 
MulticlassClassificationEvaluator and the corresponding metrics classes 
BinaryClassificationMetrics, RegressionMetrics and MulticlassMetrics should use 
sample weight data.
    
    I've closed the PR: https://github.com/apache/spark/pull/16557
    as recommended in favor of creating three pull requests, one for each of 
the evaluators (binary/regression/multiclass) to make it easier to 
review/update.
    
    ## How was this patch tested?
    I added tests to the metrics and evaluators classes.


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/imatiach-msft/spark ilmat/binary-evalute

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/17084.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #17084
    
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