From: Tests for differential gene expression using weights in oligonucleotide microarray experiments
 |  | Group A | Group B | ||||
---|---|---|---|---|---|---|---|
 |  | Array 1 | ...... | Array N A | Array 1 | ...... | Array N B |
Up-regulated Gene Group | g 1 | γ g | γ g = γ g + δ g | ||||
 | ... |  |  |  |  |  |  |
 | g d*k*G/2 |  |  |  |  |  |  |
Down-regulated Gene Group | g d*k*G/2+1 | γ g = γ g + δ g | γ g | ||||
 | ... |  |  |  |  |  |  |
 | g d*k*G |  |  |  |  |  |  |
Non-differentially Expressed Gene Group | g d*k*G+1 | γ g ≠0 δ g = 0 | |||||
 | ... |  |  |  |  |  |  |
 | g k*G |  |  |  |  |  |  |
Non- Expressed Gene Group | g k*G+1 | γ g = 0 δ g = 0 | |||||
 | ... |  |  |  |  |  |  |
 | G |  |  |  |  |  |  |