Table 1. Size and dimensionality d of the AGP and HMP datasets in Order, Family, and Genus taxonomic levels.

Initial (init.) dimensionality corresponds to raw data and processed (proc.) corresponds to data, after removing OTU found in less than 1% of the samples or with a standard deviation less than 0.001.

Dataset	Size	Order d		Family d		Genus d
		init.	proc.	init.	proc.	init.	proc.
AGP	9511	168	39	258	69	535	108
HMP	4587	179	39	267	70	574	97