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

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

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