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## What changes were proposed in this pull request? Cleanup of examples, mostly from PySpark-ML to fix minor issues: unused imports, style consistency, pipeline_example is a duplicate, use future print funciton, and a spelling error. * The "Pipeline Example" is duplicated by "Simple Text Classification Pipeline" in Scala, Python, and Java. * "Estimator Transformer Param Example" is duplicated by "Simple Params Example" in Scala, Python and Java * Synced random_forest_classifier_example.py with Scala by adding IndexToString label converted * Synced train_validation_split.py (in Scala ModelSelectionViaTrainValidationExample) by adjusting data split, adding grid for intercept. * RegexTokenizer was doing nothing in tokenizer_example.py and JavaTokenizerExample.java, synced with Scala version ## How was this patch tested? local tests and run modified examples Author: Bryan Cutler <cutlerb@gmail.com> Closes #14081 from BryanCutler/examples-cleanup-SPARK-16403. |
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