Calculation details of the proposed RS measure. TFBSs have different shapes for different TFs and have different colors for different genes where they locate. Gene View aligns the genes. TF View focuses on the TFBS locations associated to one common TF at a time. In this sample, there are three TFs (circle, square and triangle) and two (circle and square) of them are common TFs of the two genes. The longer promoter length L is L
. According to Eq. (6), the RS of the two genes is .