zhengruifeng opened a new pull request #25244: [SPARK-28499][ML] Optimize MinMaxScaler URL: https://github.com/apache/spark/pull/25244 ## What changes were proposed in this pull request? 1, avoid calling param getter in udf; 2, for constant dims, precompute the transformed result; 3, for usual dims, precompute `scale / originalRange(i)` to skip a division; ## How was this patch tested? existing suites
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