Abalone (Imbalanced: 18 vs 9) data set 1: Description. A imbalanced version of the Abalone data set, where the possitive examples belong to class 18 and the negative examples belong to class 9. 2: Type. Imbalanced 3: Origin. Real world 4: Instances. 731 5: Features. 8 6: Classes. 2 7: Missing values. No 8: IR: 16.68 9: Header. @relation abalone9-18 @attribute Sex {M, F, I} @attribute Length real [0.075, 0.815] @attribute Diameter real [0.055, 0.65] @attribute Height real [0.0, 1.13] @attribute Whole_weight real [0.0020, 2.8255] @attribute Shucked_weight real [0.0010, 1.488] @attribute Viscera_weight real [5.0E-4, 0.76] @attribute Shell_weight real [0.0015, 1.005] @attribute Class {positive, negative} @inputs Sex, Length, Diameter, Height, Whole_weight, Shucked_weight, Viscera_weight, Shell_weight @outputs Class