Table 6 Feature selection performance using alignment-free methods (error, %)

Full feature set (1048576 feat.)

4096

2048

1024

512

200

100

2.49 ± 0.87

2.51 ± 0.95

2.79 ± 1.02

3.00 ± 0.96

3.17 ± 0.86

3.52 ± 0.64

4.48 ± 0.86

3.57 ± 1.08

3.53 ± 1.12

3.80 ± 1.22

4.17 ± 1.05

4.40 ± 1.15

4.81 ± 1.30

5.64 ± 1.20

1.07 ± 1.81

0.44 ± 0.92

0.44 ± 0.92

0.44 ± 0.92

0.44 ± 0.92

0.64 ± 1.03

1.49 ± 1.75

1.63 ± 1.22

1.63 ± 1.22

1.63 ± 1.22

1.63 ± 1.22

1.63 ± 1.22

1.63 ± 1.22

1.63 ± 1.22

6.30 ± 1.80

6.45 ± 1.82

6.94 ± 2.08

7.13 ± 2.05

7.41 ± 1.77

9.10 ± 1.64

9.84 ± 1.99

5.50 ± 3.27

5.35 ± 3.36

5.35 ± 3.36

6.14 ± 3.50

6.80 ± 3.15

8.32 ± 2.75

9.51 ± 2.40

2.86

0

0

0

0

0

0