Attribute Index and Uniform Design Based Multiobjective Association Rule Mining with Evolutionary Algorithm

Table 1

Values of the parameter 𝜎 for different number of factors and different number of levels per factor.

Number of levels per factors	Number of factors	𝜎
5	2~4	2
7	2~6	3
11	2~10	7
	2	5
13	3	4
	4~12	6
17	2~16	10
19	2~3	8
	4~18	14
	2, 13~14, 20~22	7
23	8~12	15
	3~7, 15~19	17
	2	12
	3	9
29	4~7	16
	8~12, 16~24	8
	13~15	14
	25~28	18
31	2, 5~12, 20~30	12
	3~4, 13~19	22