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[SPARK-14351] [MLlib] [ML] Optimize findBestSplits method for decision trees (and random forest) #13959

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[SPARK-14351] [MLlib] [ML] Optimize findBestSplits method for decision trees (and random forest) #13959

wants to merge 8 commits into from

Commits on Jun 27, 2016

  1. Add calculateGain method to all Impurity objects

    @MechCoder
    MechCoder committed Jun 27, 2016
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  2. Refactor gain calculation for categorical splits

    @MechCoder
    MechCoder committed Jun 27, 2016
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Commits on Jun 28, 2016

  1. Remove impurity calculation to outside the for loop

    @MechCoder
    MechCoder committed Jun 28, 2016
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  2. Remove per feature impurityCalculator initialization

    @MechCoder
    MechCoder committed Jun 28, 2016
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  3. Get rid of calculateImpurityStats

    @MechCoder
    MechCoder committed Jun 28, 2016
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  4. where did that come from?

    @MechCoder
    MechCoder committed Jun 28, 2016
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Commits on Jun 29, 2016

  1. Add documentation

    @MechCoder
    MechCoder committed Jun 29, 2016
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  2. minor change to variance calculation

    @MechCoder
    MechCoder committed Jun 29, 2016
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