# Odum

$D_{Odum} = \frac {\sum_{j=1}^{S_T} |S_{Aj} - S_{Bj}| }{\sum_{j=1}^{S_T} (S_{Aj} + S_{Bj} )}$

where,

• $$S_{Aj}$$ is the jth OTU in sample A
• $$S_{Bj}$$ is the jth OTU in sample B