Table 3.

Description of the NG-Tax 2.0 ontology main classes.

Main ontology class	Description
Library*	Description of samples in a library
Sample	Description of PCRPrimers, BarcodeSet and ASVSet
Sequence	ASVSequence: ASV forward and reverse sequences
SequenceSet*	ASVSet, RejectedAsChimera, RejectedASV BarcodeSet, PCRPrimerSet
Taxon	Taxon name and rank annotation of an ASVSet
ASVAssignment	Taxon information and related provenance
Provenance	Interlinks ProvenanceClassification, containing tool specific information with the input Library
ProvenanceClassification*	Contains confidence score of taxonomic assignment and user input command argument in the analysis

*NG-Tax 2.0 specific extensions of the gbol ontology.