Table 2.

Details of datasets.

Dataset	Observations	Features	Classes	% largest class	% smallest class	% sample distribution
Lung cancer	203	12,600	5	69	3	[69, 10, 10, 8, 3]
11 tumor	174	12,533	11	16	4	[16, $\dots$,5,4]
Leukemia 2	72	11,225	3	39	28	[28, 33, 39]
Prostate	102	10,509	2	51	49	[49, 51]
Brain tumor 2	50	10,367	4	30	14	[14, 28, 30]
Brain tumor 1	90	5920	5	67	4	[67, 11, 11, 7, 4]
9 tumor	60	5726	9	15	3	[15, $\dots$, 10, 10, 3]
DLBCL	77	5469	2	75	25	[75, 25]
Leukemia 1	72	5327	3	53	12	[53, 35, 12]
SRBCT	83	2308	4	35	13	[13, 22, 30, 35]