Prototype KG‑aware adaptation of the BioPortal interface. Graph pages generated from live KG‑Registry metadata; tool links go to the live BioPortal.
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DUO

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The Data Use Ontology

KGXBioPortal ontologyCC BY 4.0
Visibility: Public

A KGX transformation of the BioPortal ontology The Data Use Ontology (DUO), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them. The base graph is the ontology on its own, imports stripped; the full graph, where built, has the import closure merged in.

Base graph at a glance

324
Nodes
310
Edges
—
Version
2026-09-14
Transformed

Products & downloads

Base
KGX base graph (imports stripped)
DUO.tar.gz
324 nodes · 310 edges
Full
KGX full graph (imports merged in)
DUO_full.tar.gz
561 nodes · 946 edges

The base graph contains DUO_nodes.tsv and DUO_edges.tsv. The full graph contains DUO_full_nodes.tsv and DUO_full_edges.tsv: this ontology plus the 1 it imports (and their imports in turn), merged by ROBOT. Use it when the imported terms matter; the base graph merges more cleanly with other graphs. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Imports 1 · 1 in KG‑Bioportal

What this ontology pulls in through owl:imports. An import that is itself a BioPortal ontology links to its page here; a module of one links to the ontology it belongs to; anything else links out, or is named by its namespace when it is not a web address. The base graph leaves all of these out; the full graph, where built, has them merged in.

Biolink categories 8 categories across 324 nodes

InformationContentEntity198
NamedThing69
Procedure25
Attribute8
Publication8
Disease7
PhysicalEntity6
Activity3

An item carrying more than one category is counted under each, so these counts can add up to more than the total.

How they were assigned 255 of 324 nodes (78.7%)

10is a seed term whose Biolink class is not in doubt
241inherits from a seed term above it in the hierarchy
4takes the category of a term it is mapped to by exact match

Biolink categories 1 category across 310 edges

Association310

An item carrying more than one category is counted under each, so these counts can add up to more than the total.