|
False classifications
|
MWT
|
EDGE
|
PAM
|
Students t-test
|
Wilcoxon test
|
---|
Up-regulated in tumours
|
0
|
1628
|
1109
|
938
|
1087
|
1054
|
|
1
|
0
|
202
|
211
|
184
|
187
|
|
2
|
0
|
27
|
73
|
20
|
14
|
|
3
|
0
|
1
|
25
|
0
|
0
|
|
4
|
0
|
0
|
6
|
0
|
0
|
|
9
|
0
|
0
|
1
|
0
|
0
|
Down- regulated in tumours
|
8
|
0
|
0
|
1
|
0
|
0
|
|
7
|
0
|
0
|
1
|
0
|
0
|
|
6
|
0
|
0
|
2
|
0
|
0
|
|
5
|
0
|
0
|
12
|
0
|
0
|
|
4
|
0
|
3
|
29
|
2
|
2
|
|
3
|
0
|
16
|
67
|
15
|
10
|
|
2
|
0
|
64
|
118
|
68
|
64
|
|
1
|
0
|
317
|
314
|
343
|
372
|
|
0
|
1201
|
1090
|
1031
|
1110
|
1126
|
|
# of the probe sets with 2 or more misclassified pairs
|
0
|
111
|
335
|
105
|
90
|
|
total # of probe sets
|
2829
|
2829
|
2829
|
2829
|
2829
|
|
percent of probe sets with 2 or more misclassified pairs
|
0
|
0.04
|
0.12
|
0.04
|
0.03
|
- Comparison of the classification accuracy of highly discriminative 2829 probe sets (selected using MWT on cross-normalized signal intensity values with a stringent 100% accuracy criteria and a bootstrap p-value cut-off<0.05) with top-level 2829 probe sets identified by standard Wilcoxon sign ranked test (WT), EDGE, PAM, and student’s t-test. While the ECD classifier was derived using cross-normalized dataset as input, the classifiers derived using PAM, EDGE, WT and t-test used the original MAS5-normalized data as input. However the classification accuracy in terms of the number of probe sets with 2 or more anomalous fold changes was estimated using the cross-normalized dataset.