Table 5.

Order of addition during forward feature selection

#	Feature number
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
1	4	1	5	6		3	7										2
2	5	2				3		4									6	1
3		1		5		2	4								3
4		1	4	5			6				7	8			2			3
5		1			4	3								2
6		1			2									3
7	3	1				2	4
8		1			2		4											3
9	4	1				2	3						5
10	5	1		2		3	8		7			9	6			4
11		1				2			3								4
12		1	4			3						5					2
13		1		5		2	3		4
14		1				2											3
15		1		2									3
16	2	1			4	3							5
17		1	3			2	4
18		1		4			5										2	3
19		1	3	5		2	6	4
20		1			2	3								4

#, cross validation.