Ontology

SIO

Semanticscience Integrated Ontology

The semanticscience integrated ontology (SIO) provides a simple, integrated upper level ontology (types, relations) for consistent knowledge representation across physical, processual and informational entities.

biologyclassificationessknowledge representationnatural sciencenfdi-matwerknfdi4chemnfdi4ing
D50

FAIR 35/48

Version 1.62

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagegithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortal

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)sio1.621,585237025 Oct 2026
TIB Terminology Servicesio1.591,584245028 Mar 2024

Ontology IRI http://semanticscience.org/ontology/sio.owl
Version IRI http://semanticscience.org/ontology/sio/v1.62/sio-release.owl

Languages en

Reused by (21)
BMONT CAO CCO CEPH CTENO ENM GENEPIO GEXO GSSO HSO ICEO ICO MPIO NGBO ONS ONTONEO ORTH PROCO RETO REXO VALUESETS

Also registered as
agroportal: SIO bioportal: SIO fairsharing: FAIRsharing.dpkb5f ols: sio ontobee: SIO tib.ts: sio

Automated evaluation

F Findable FAIR8/12
  • Persistent identifier (F1)no PURL / w3id / DOI for the artefact0
  • Indexed in services (F4)5: OLS, TIB, BioPortal, Bioregistry, FAIRsharing+5
  • Citable reference (F2)doi:10.1186/2041-1480-5-14+3
A Accessible FAIR12/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)Bioregistry+3
I Interoperable FAIR8/12
  • Formal machine-readable format (I1)OWL+5
  • Semantic-web IRIs (I2)OWL+3
  • References other vocabularies (I3)no imported vocabularies found0
R Reusable FAIR7/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)1.62 (OLS); not declared inside the artefact+2
  • Community standards (R1.3)no independent compliance report (not on the OBO Dashboard)0
Q Ontology consistency & quality0/20
  • Logical consistencynever checked by a reasoner0
  • OWL 2 DL profileprofile not checked0
  • Upper-ontology alignmentno BFO/COB/DOLCE import found0
  • Standard relations (RO)does not import the Relation Ontology0
  • ROBOT report: no errorsno ROBOT report available0
  • ROBOT report: warning densityno ROBOT report available0
  • Pitfall scan: no critical pitfallsno pitfall scan or ROBOT report yet0
M Maintenance10/16
  • Recency2026-10-16 → 0.3 months (≤ 3 months)+10
  • Release cadence (12 months)0 releases (GitHub releases)0
U Community adoption5/16
  • Documented adopting projects0 projects0
  • Reused by other ontologies21: bmont, cao, cco, ceph, cteno, enm…+3
  • Community signalmax(stars 71 → 2, citations 174 → 2)+2
P Penalties (inactivity & inconsistency)0
  • Time since last activity0.0 years → 4 × max(0, 0.0 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencynot yet checked by a reasoner0

FAIR subtotal 35/48 · earned 50/100 = 50/100 → grade D

Community adoption 0

No adopting projects documented yet.

Know a project that uses SIO? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

RunScoreFAIRVersion evaluatedTermsSnapshot
26 Oct 2026, 03:31 UTC50 D351.621,585JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 200)github.com26 Oct 2026, 03:22 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 03:22 UTC
Download link check (HTTP 200)raw.githubusercontent.com26 Oct 2026, 03:22 UTC
Artefact headerraw.githubusercontent.com26 Oct 2026, 03:22 UTC
Git refs (commit eb7e30b, latest tag sio-v1.17.0)github.com26 Oct 2026, 03:22 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 03:22 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 03:22 UTC
TIB Terminology Service metricsservice.tib.eu26 Oct 2026, 03:22 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 03:22 UTC
Crossref citations (doi:10.1186/2041-1480-5-14)api.crossref.org26 Oct 2026, 03:22 UTC

Run 2026-10-26T02-37-38Z · evaluator v2.0.0 · rubric v3.4 · entry.json · run snapshot

How to cite