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Table 3 Statistical classification error rates (and their corresponding standard deviation) by using k NN with different different parameters on four microarray data sets (%)

From: Selecting subsets of newly extracted features from PCA and PLS in microarray data analysis

DATASET

KNN

PCAKNN

GAPCAKNN

PLSKNN

GAPLSKNN

PPKNN

GAPPKNN

k = 1 for k NN

CNS

47.5(3.5)

43.8(8.7)

40.8(10.2)

44.9(9.3)

36.4(10.7)

44.9(10.3)

34.3(8.3)

COLON

32.5(1.4)

28.4(8.4)

27.1(10.3)

24.8(14.3)

21.9(7.5)

30.2(12.2)

18.2(7.2)

LEUKEMIA

16.1(2.2)

14.7(10.8)

11.4(8.7)

15.7(10.4)

12.3(8.6)

15.9(11.9)

8.4(6.4)

LUNG

17.6(2.3)

11.8(7.1)

11.0(4.6)

11.8(5.3)

6.1(4.7)

13.2(5.6)

7.8(4.1)

Average

28.4(2.3)

24.6(8.7)

22.57(8.4)

24.3(9.8)

19.2(7.8)

25.3(10.0)

17.1(6.5)

k = 4 for k NN

CNS

48.6(1.2)

46.5(11.2)

41.5(11.0)

44.9(9.9)

38.4(10.8)

47.8(9.9)

38.5(8.7)

COLON

44.6(2.8)

42.9(12.9)

36.2(9.2)

35.3(14.3)

28.8(8.8)

34.9(13.7)

24.5(8.4)

LEUKEMIA

32.5(1.9)

31.5(14.1)

28.1(11.9)

15.5(9.6)

14.8(14.9)

18.6(11.5)

10.0(7.8)

LUNG

16.2(0.8)

15.8(4.6)

13.5(4.8)

12.6(6.3)

10.1(4.8)

13.4(6.5)

9.4(3.5)

Average

35.4(1.7)

34.1(10.7)

28.8(9.2)

27.0(10.0)

23.0(8.0)

28.67(10.4)

20.6(7.1)

k = 7 for k NN

CNS

46.5(1.4)

39.1(6.6)

38.6(6.8)

41.4(10.3)

39.4(9.4)

39.0(9.0)

31.9(7.6)

COLON

30.9(1.0)

28.4(8.4)

26.0(8.3)

28.3(11.6)

24.3(8.3)

25.8(11.0)

19.5(7.2)

LEUKEMIA

24.3(1.0)

22.7(10.2)

17.7(9.1)

13.5(9.0)

11.5(8.8)

12.4(8.0)

7.0(6.2)

LUNG

16.3(0.6)

13.2(3.6)

10.1(3.5)

11.5(4.1)

6.5(4.7)

12.1(5.4)

7.5(3.61)

Average

29.5(1.0)

25.8(7.2)

23.1(6.9)

23.6(8.7)

20.4(7.8)

22.42(8.3)

16.4(6.2)