huaxingao opened a new pull request #27527: [SPARK-30776][ML] Support FValueRegressionSelector for continuous features and continuous labels URL: https://github.com/apache/spark/pull/27527 ### What changes were proposed in this pull request? Add FValueRegressionSelector for continuous features and continuous labels. ### Why are the changes needed? Current Spark only supports the selection of categorical features, while there are many requirements for the selection of continuous distribution features. I will add two new selectors: 1. FValueRegressionSelector for continuous features and continuous labels. 2. ANOVAFValueClassificationSelector for continuous features and categorical labels. I will use subtasks to add these two selectors: 1. add FValueRegressionSelector on scala side 2. add FValueRegressionSelector on python side 3. add samples and doc 4. do the same for ANOVAFValueClassificationSelector ### Does this PR introduce any user-facing change? Yes. Add a new Selector ### How was this patch tested? Add new unit tests.
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