Huaxin Gao created SPARK-31185:
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Summary: implement VarianceThresholdSelector
Key: SPARK-31185
URL: https://issues.apache.org/jira/browse/SPARK-31185
Project: Spark
Issue Type: Bug
Components: ML
Affects Versions: 3.1.0
Reporter: Huaxin Gao
Implement a Feature selector that removes all low-variance features. Features
with a
variance lower than the threshold will be removed. The default is to keep all
features with non-zero variance, i.e. remove the features that have the same
value in all samples.
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