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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SIO

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Semanticscience Integrated Ontology

KGXBioPortal ontologyv1.61CC BY 4.0
Visibility: Public

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

Graph at a glance

1,897
Nodes
4,185
Edges
1.61
Version
2026-09-14
Transformed

Products & downloads

KGX
KGX nodes & edges
SIO.tar.gz
2K nodes · 4K 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 SIO_nodes.tsv and SIO_edges.tsv. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Biolink categories 4 categories across 1,897 nodes

PhysicalEntity1,039
Attribute315
NamedThing314
Activity229

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 1,583 of 1,897 nodes (83.4%)

1,583inherits from a root class placed by review

1,583 of these nodes inherit a category from 3 root classes reviewed by Claude (model version not recorded), in a Claude Code session with the maintainer; shipped in on 2026-08-26. Not yet confirmed by a maintainer. These root classes were placed by reading them and their subclasses in the published graph, with the assistance of an AI agent. The reading, the evidence, and the refusals are recorded in reviewed_roots.yaml. See how categories are assigned.

Biolink categories 1 category across 4,185 edges

Association4,185

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