OTU impacts on PCA

[Nicholas_Bokulich]

Also, see this:

Robust Aitchison PCA Beta Diversity with DEICODE

DEICODE (pronounced like decode /de.ko.de/) Documentation available in the pugin library. DEICODE is a form of Aitchison Distance that is robust to high levels of sparsity. DEICODE utilizes a natural solution to the zero problem formulated in recommendation systems called matrix completion. A simple way to interpret the method is, as a robust compositional PCA (via SVD) where zero values do not influence the resulting ordination. One of the benefits of using DEICODE is the ability to reveal s…