Hi! Excuse me, but I’m not sure if this question fits in this category, I’m a new user and I have some doubs about taxonomical assignment.
I want to use the PR2 database. Training a classifier is the only option?
On the other hand, I was wondering if the pre-trained classifier that can be found in the Qiime2 website:
Silva 138 99% OTUs full-length sequences](https://data.qiime2.org/2020.11/common/silva-138-99-nb-classifier.qza) (MD5:
contains sequences from 16S only, or 16S +18S.
Thank you so much!