chi2 [WhereOS, SQL, Spark, Hive]

Class hivemall.ftvec.selection.ChiSquareUDF
Usage chi2(array> observed, array> expected) - Returns chi2_val and p_val of each columns as , array>

More functions can be added to WhereOS via Python or R bindings or as Java & Scala UDF (user-defined function), UDAF (user-defined aggregation function) and UDTF (user-defined table generating function) extensions. Custom libraries can be added on via Settings-page or installed from WhereOS Store.

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