observed otus by DADA2, taxonomy

[Nicholas_Bokulich]

@anirban.mcgill

I noticed there are some taxonomic annotations with no information from the phyla level down to the species level. (E.g. k_Bacteria;p__;c__;o__;f__;g__;s__ )
The number of these annotations are really low, yet I was wondering why so. Are these the unknown samples?

@timanix

I believe there are several reasons why the classifier is failed to annotate them deeper

These are not due to the classifier failing to annotate, they are the annotations given by your reference database. See this topic for details:

ASV collaps question

Hi Collaps to genus level in qiime2. It is divided into one with and without a level name. Can't you see the same bacteria? Thank you.[%EC%BA%A1%EC%B2%98]