Informative gene selection and the direct classification of tumors based on relative simplicity

BMC Bioinformatics

Table 6 2 × 2 contingency table for gene pairs of horizontal comparison

Class	X _i,j > X _i,q	X _i,j < X _i,q	Total
+	f₊₁	f₊₂	f₊
-	f₋₁	f₋₂	f₋
Total	f₁	f₂	n

X _i,j represents the expression value of the j ^th gene (G_j) in the i ^th sample; f₊₁ is the number of positive samples with X _i,j larger than X _i,q, f₊₂ is the number of positive samples with X _i,j less than X _i,q, f₋₁ is the number of negative samples with X _i,j larger than X _i,q, and f₋₂ is the number of negative samples with X _i,j less than X _i,q

ISSN: 1471-2105