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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IAO

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Information Artifact Ontology

KGXBioPortal ontologyv2026-03-30CC BY 4.0
Visibility: Public

A KGX transformation of the BioPortal ontology Information Artifact Ontology (IAO), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them.

Graph at a glance

505
Nodes
878
Edges
2026-03-30
Version
2026-09-14
Transformed

Products & downloads

KGX
KGX nodes & edges
IAO.tar.gz
505 nodes · 878 edges
Base graph is the full graph

This ontology declares no imports, so its base graph already is its full graph; nothing separate was built.

The graph contains IAO_nodes.tsv and IAO_edges.tsv. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Biolink categories 6 categories across 505 nodes

NamedThing283
InformationContentEntity180
Activity20
Attribute8
Publication8
PhysicalEntity6

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 222 of 505 nodes (44.0%)

6is a seed term whose Biolink class is not in doubt
216inherits from a seed term above it in the hierarchy

Biolink categories 1 category across 878 edges

Association878

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