Statlog (Shuttle) Multi-class Imbalanced data set 1: Description. An imbalanced version of the Statlog (Shuttle) data set, where there are some classes with a small number of examples while other classes have a large number of examples. 2: Type. Imbalanced 3: Origin. Real world 4: Instances. 2175 5: Features. 9 6: Classes. 7 7: Missing values. No 8: IR: 853.00 9: Header. @relation unknow @attribute a1 integer [27, 126] @attribute a2 integer [-4821, 5075] @attribute a3 integer [21, 149] @attribute a4 integer [-3939, 3830] @attribute a5 integer [-188, 436] @attribute a6 integer [-13839, 13148] @attribute a7 integer [-48, 105] @attribute a8 integer [-353, 270] @attribute a9 integer [-356, 266] @attribute class {1,2,3,4,5,6,7} @inputs a1, a2, a3, a4, a5, a6, a7, a8, a9 @outputs class