srowen commented on issue #27337: [SPARK-30545][ML][PYSPARK] Impl Extremely Randomized Trees URL: https://github.com/apache/spark/pull/27337#issuecomment-578515547 I don't know, 2600 lines of code/doc for a small variation, not sure. I don't think ERT is that different, and where it benefits (less compute), well, do we need that? this part of random forests isn't the bottleneck in a distributed implementation. The cost of more trees may be higher in Spark.
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