Ontology

DUO

Data Use Ontology

DUO is an ontology which represent data use conditions.

biomedical sciencecomputer scienceessmetadata standardizationnfdi4chemnfdi4ingoboontology
D51

FAIR 47/48

Version 2021-02-23

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagegithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortalBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)duo2021-02-233111572125 Oct 2026
TIB Terminology Serviceduo2021-02-233061352021 Aug 2023
OBO Dashboardduo2021-02-2345——9 Dec 2025

Ontology IRI http://purl.obolibrary.org/obo/duo.owl
Version IRI http://purl.obolibrary.org/obo/duo/releases/2021-02-23/duo.owl

Languages en

Imports from (11)
APOLLO_SV BFO COB GAZ IAO MONDO OBI OMO PATO RO UO

Reused by (6)
EUPATH HCAO ICO MSIO SCDO VALUESETS

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
no
ROBOT report
5 errors · 1 warnings · 0 info
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
276 · 35.94% entities reused

Also registered as
aberowl: DUO bioportal: DUO fairsharing: FAIRsharing.5dnjs2 obofoundry: duo ols: duo ontobee: DUO tib.ts: duo wikidata.entity: Q113009193

Automated evaluation

F Findable FAIR12/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)6: OLS, TIB, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)doi:10.1016/j.xgen.2021.100028+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)OBO Foundry, Bioregistry+3
I Interoperable FAIR12/12
  • Formal machine-readable format (I1)OWL+5
  • Semantic-web IRIs (I2)OWL+3
  • References other vocabularies (I3)imports 11: apollo_sv, bfo, cob, gaz, iao, mondo, obi, omo…+4
R Reusable FAIR11/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)2021-02-23 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 9/13 checks pass+2
Q Ontology consistency & quality15/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+10
  • OWL 2 DL profileoutside OWL 2 DL0
  • Upper-ontology alignmentimports BFO, COB+3
  • Standard relations (RO)imports RO+1
  • ROBOT report: no errors5 errors0
  • ROBOT report: warning density1 warnings / 45 classes = 0.02+1
  • Pitfall scan: no critical pitfallsno pitfall scan yet; ROBOT report has 5 errors0
M Maintenance0/16
  • Recency2022-09-21 → 49.1 months (older / unknown)0
  • Release cadence (12 months)0 releases (GitHub releases)0
U Community adoption4/16
  • Documented adopting projects0 projects0
  • Reused by other ontologies6: eupath, hcao, ico, msio, scdo, valuesets+2
  • Community signalmax(stars 72 → 2, citations 62 → 2)+2
P Penalties (inactivity & inconsistency)-15
  • Time since last activity4.1 years → 4 × max(0, 4.1 − 1)-12
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0
  • ROBOT report errors5 errors-3

FAIR subtotal 47/48 · earned 66/100 − 15 inactivity = 51/100 → grade D

Community adoption 0

No adopting projects documented yet.

Know a project that uses DUO? 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 UTC51 D472021-02-23311JSON

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, 02:52 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 02:52 UTC
Download link check (HTTP 200)purl.obolibrary.org26 Oct 2026, 02:52 UTC
Artefact header (version IRI)raw.githubusercontent.com26 Oct 2026, 02:52 UTC
Git refs (commit 81f5c3d, latest tag v2021-02-23)github.com26 Oct 2026, 02:52 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 02:52 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 02:52 UTC
OBO Foundry status, license & usagesobofoundry.org26 Oct 2026, 02:37 UTC
TIB Terminology Service metricsservice.tib.eu26 Oct 2026, 02:52 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 02:52 UTC
OBO Dashboard (checked 9 Dec 2025)dashboard.obofoundry.org26 Oct 2026, 02:37 UTC
Crossref citations (doi:10.1016/j.xgen.2021.100028)api.crossref.org26 Oct 2026, 02:52 UTC

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

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