Table 1 The mean and the Standard deviation of the 10-fold cross-validation error (in percentage) for the different approaches and the Affymetrix platform datasets employed in the study.

Gene selection

mean ± std

mean ± std

mean ± std

mean ± std

U, SNR, NMC

30.4 ± 6.5 *

12.9 ± 4.2 *

4.8 ± 2.7 *

9.7 ± 4.2 *

U, SNR, FLD

42.5 ± 7.3

19.2 ± 5.9

8.0 ± 3.2

10.0 ± 3.0 *

U, t-test, NMC

32.5 ± 4.9 *

12.5 ± 4.2 *

4.8 ± 2.7 *

10.8 ± 3.4

U, t-test, FLD

35.8 ± 6.5 *

11.7 ± 3.5 *

12.0 ± 4.2

8.0 ± 2.5 *

BP greedy, FLD

43.8 ± 6.2

12.9 ± 3.8 *

11.6 ± 3.6

9.8 ± 3.3 *

FS, FLD

47.9 ± 5.1

15.4 ± 4.1

10.2 ± 4.2

14.0 ± 3.4

RFE, FLD

34.2 ± 5.0 *

22.9 ± 4.4

3.5 ± 2.6 *

10.0 ± 2.6 *

RFE, SVM

35.4 ± 5.0 *

22.1 ± 3.5

4.5 ± 2.6 *

8.0 ± 2.9 *

Liknon

32.9 ± 6.1 *

13.3 ± 4.2 *

11.8 ± 4.0

10.8 ± 3.7

TSP

47.0 ± 5.6

5.4 ± 2.9 *

10.6 ± 3.8

7.0 ± 2.6 *

no gene selection

mean ± std

mean ± std

mean ± std

mean ± std

NMC

42.1 ± 5.5

17.9 ± 3.3

3.5 ± 2.6 *

33.7 ± 3.9

FLD

32.9 ± 6.3 *

21.7 ± 3.7

4.5 ± 2.6 *

8.0 ± 2.5 *

SVM

35.4 ± 7.0 *

22.1 ± 3.5

3.5 ± 2.6 *

8.0 ± 2.9 *