TSG: a new algorithm for binary and multi-class cancer classification and informative genes selection

Table 2 Frequency counts of samples in each class for a set of k markers.

Class	$E i 1 < E i 2$	$E i 1 ≥ E i 2$	...	$E i k - 1 < E i k$	$E i k - 1 ≥ E i k$	Total
C ₁	$f 11 i 1 i 2$	$f 21 i 1 i 2$	...	$f 11 i k - 1 i k$	$f 21 i k - 1 i k$	kn ₁
⋮	⋮	⋮	⋮	⋮	⋮	⋮
C _M	$f 1 M i 1 i 2$	$f 2 M i 1 i 2$	...	$f 1 M i k - 1 i k$	$f 2 M i k - 1 i k$	kn _M
Total	$T 1 = Σ m = 1 M f 1 m i 1 i 2$	$T 2 = Σ m = 1 M f 2 m i 1 i 2$	...	$T (k - 1) k / 2 - 1 = Σ m = 1 M f 1 m i 1 i 2$	$T (k - 1) k / 2 = Σ m = 1 M f 2 m i 1 i 2$	K N