zhengruifeng commented on issue #26064: [SPARK-23578][ML][PYSPARK] Binarizer support multi-column URL: https://github.com/apache/spark/pull/26064#issuecomment-541599273 @huaxingao I think it should contain two points: 1, multi-column version is widely used; 2, it is more efficient than process columns one by one; As to this PR, since `Bucketizer` supports multi-cols, and `Binarizer` is very similar to it. So I think it is reasonable to impl multi-cols support for `Binarizer`.
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