python/pyspark/sql/dataframe.py · f4a22808e03fa12bfe1bfc82cf713cfda7e063a9 · cs525-sp18-g07 / spark

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9 years ago

[SPARK-6548] Adding stddev to DataFrame functions · f4a22808

JihongMa authored 9 years ago

Adding STDDEV support for DataFrame using 1-pass online /parallel algorithm to compute variance. Please review the code change.

Author: JihongMa <linlin200605@gmail.com>
Author: Jihong MA <linlin200605@gmail.com>
Author: Jihong MA <jihongma@jihongs-mbp.usca.ibm.com>
Author: Jihong MA <jihongma@Jihongs-MacBook-Pro.local>

Closes #6297 from JihongMA/SPARK-SQL.

f4a22808

History

[SPARK-6548] Adding stddev to DataFrame functions

JihongMa authored 9 years ago

Adding STDDEV support for DataFrame using 1-pass online /parallel algorithm to compute variance. Please review the code change.

Author: JihongMa <linlin200605@gmail.com>
Author: Jihong MA <linlin200605@gmail.com>
Author: Jihong MA <jihongma@jihongs-mbp.usca.ibm.com>
Author: Jihong MA <jihongma@Jihongs-MacBook-Pro.local>

Closes #6297 from JihongMA/SPARK-SQL.