Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/15212#discussion_r93874587
--- Diff: python/pyspark/ml/feature.py ---
@@ -2629,8 +2629,21 @@ class ChiSqSelector(JavaEstimator, HasFeaturesCol,
HasOutputCol, HasLabelCol, Ja
"""
.. note:: Experimental
- Chi-Squared feature selection, which selects categorical features to
use for predicting a
- categorical label.
+ Creates a ChiSquared feature selector.
+ The selector supports different selection methods: `numTopFeatures`,
`percentile`, `fpr`,
+ `fdr`, `fwe`.
+ `numTopFeatures` chooses a fixed number of top features according to a
chi-squared test.
--- End diff --
Organize following items to make it as a list in the generated API docs,
please refer
https://github.com/apache/spark/blob/master/python/pyspark/ml/regression.py#L1300
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