We will be offering mothur and R workshops throughout 2019. Learn more.

Memchord

From mothur
Jump to: navigation, search

<math>D_{Memchord} = \sqrt{ \sum_{j=1}^{S_T} \left ( \frac{S_{Aj}}{\sqrt{S_A}} - \frac{S_{Bj}}{\sqrt {S_B}} \right )^2 } </math>


  • where <math>S_{T}</math> is the total number of OTUs
  • where <math>S_{Aj}</math> is 1 if the abundance of the jth OTU in sample a is greater than zero, otherwise 0.
  • where <math>S_{Bj}</math> is 1 if the abundance of the jth OTU in sample b is greater than zero, otherwise 0.
  • where <math>S_{a}</math> is the number of nonzero OTUs in sample a.
  • where <math>S_{b}</math> is the number of nonzero OTUs in sample b.