rint(expr) – Returns the double value that is closest in value to the argument and

str rlike regexp – Returns true if `str` matches `regexp`, or false otherwise. Platforms: WhereOS,

rmse(double predicted, double actual) – Return a Root Mean Squared Error Platforms: WhereOS, Spark, Hive

reverse(array) – Returns a reversed string or an array with reverse order of elements. Platforms:

rf_ensemble(int yhat [, array proba [, double model_weight=1.0]]) – Returns ensembled prediction results in Platforms:

right(str, len) – Returns the rightmost `len`(`len` can be string type) characters from the string