Table 1.

Basic features of 12 data sets.

Data set	Training number	Testing number	Attribute	Category
Abalone	2000	2177	8	3
Auto MPG	200	198	7	5
Bank	2000	2521	16	2
Car Evaluation	1000	728	6	4
Wine	100	78	13	3
Wine Quality	2000	4497	11	7
Iris	100	50	4	3
Glass	100	114	9	2
Image	100	110	19	7
Yeast	1000	484	8	4
Zoo	50	51	16	7
Letter	2000	18000	16	26