Informative Gene Selection and Direct Classification of Tumor Based on Chi-Square Test of Pairwise Gene Interactions

Table 3

Frequency counts of samples in each class for pairwise genes.

Class	𝑥𝑖𝑗>𝑥𝑖𝑙	𝑥𝑖𝑗<𝑥𝑖𝑙	Total
𝐶1	𝑃𝑓11	𝑃𝑓12	𝑃𝑛1=𝑃𝑓11+𝑃𝑓12
⋮	⋮	⋮	⋮
𝐶𝑚	𝑃𝑓𝑚1	𝑃𝑓𝑚2	𝑃𝑛𝑚=𝑃𝑓𝑚1+𝑃𝑓𝑚2
Total	𝑃𝑇1=∑^𝑚𝑘=1𝑃𝑓𝑘1	𝑃𝑇2=∑^𝑚𝑘=1𝑃𝑓𝑘2	𝑃𝑁=∑^𝑚𝑘=1𝑃𝑛𝑘