zhengruifeng commented on issue #27337: [SPARK-30545][ML][PYSPARK] Impl Extremely Randomized Trees URL: https://github.com/apache/spark/pull/27337#issuecomment-578484070 @srowen the main part of this PR is doc, example, and the regular methods for a new estimator. The essential change is in the impl of `RandomForest`. There are some other algs that share the internal impl, such as RandomForestClassifier and DecisionTreeClassifier. Since extraTrees is widely used, so I tend to make it a new estimator.
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