Soergel

\[D_{Soergel} = \frac{ \sum_{j=1}^{S_T} |S_{Aj} - S_{Bj} |} {\sum_{j=1}^{m} \max (S_{Aj}, S_{Bj})}\]

• where \(S_{Aj}\) is the abundance of sample A in the jth OTU.
• where \(S_{Bj}\) is the abundance of sample B in the jth OTU.