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Table 1 Bias due to the order of classes.

From: A novel method for finding non-small cell lung cancer diagnosis biomarkers

Range/Class C 1 C 2 C 3
R 1 4 6 30
R 2 6 30 4
R 3 0 4 16
  1. In this example, we consider the goodness ranking of a gene in a dataset with 100 patients and 3 classes of cancer sub-types. The expression values of the gene were discretized into 3 ranges R1, R2 and R3. There are 4 patients in class C1 with expression values in the range R1, 6 patients in class C2 with expression values in the range R1, and so on.