huaxingao commented on a change in pull request #30285:
URL: https://github.com/apache/spark/pull/30285#discussion_r520241117
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File path: python/pyspark/ml/fpm.py
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@@ -408,19 +429,26 @@ def getSequenceCol(self):
"""
return self.getOrDefault(self.sequenceCol)
- @since("2.4.0")
def findFrequentSequentialPatterns(self, dataset):
"""
Finds the complete set of frequent sequential patterns in the input
sequences of itemsets.
- :param dataset: A dataframe containing a sequence column which is
- `ArrayType(ArrayType(T))` type, T is the item type for
the input dataset.
- :return: A `DataFrame` that contains columns of sequence and
corresponding frequency.
- The schema of it will be:
- - `sequence: ArrayType(ArrayType(T))` (T is the item type)
- - `freq: Long`
-
.. versionadded:: 2.4.0
+
+ Parameters
+ ----------
+ dataset : :py:class:`pyspark.sql.DataFrame`
+ A dataframe containing a sequence column which is
+ `ArrayType(ArrayType(T))` type, T is the item type for the input
dataset.
+
+ Returns
+ -------
+ pyspark.sql.dataframe.DataFrame
Review comment:
I finished the review. please go ahead with your follow-up. I should
have submitted all the comments at the same time instead of doing single
comment.
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