Ontology

DCAT

Data Catalog

DCAT is an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web

computer scienceessontologyw3c rec
D45

FAIR 33/48

Version http://www.w3.org/ns/dcat3

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagew3.org DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in BioPortalNCBO BioPortal

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)dcat377259125 Oct 2026

Ontology IRI http://www.w3.org/ns/dcat
Version IRI http://www.w3.org/ns/dcat3

Languages ar cs da el en en-GB en-US es fr it ja

Logical consistency (ROBOT ELK)
consistent · 0 unsatisfiable
ROBOT report
300 errors · 54 warnings

OOPS!: 0 critical · 2 important · 1 minor pitfall types

Also registered as
aberowl: DCAT biodivportal: DCAT bioportal: DCAT ols: dcat tib.ts: dcat3

Automated evaluation

F Findable FAIR4/12
  • Persistent identifier (F1)no PURL / w3id / DOI for the artefact0
  • Indexed in services (F4)3: OLS, BioPortal, Bioregistry+4
  • Citable reference (F2)no reference publication listed0
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, Turtle+5
  • Semantic-web IRIs (I2)OWL, Turtle+3
  • References other vocabularies (I3)no imported vocabularies found0
R Reusable FAIR9/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)http://www.w3.org/ns/dcat3 (version IRI in the artefact)+4
  • Community standards (R1.3)no independent compliance report (not on the OBO Dashboard)0
Q Ontology consistency & quality11/20
  • Logical consistencyconsistent, 0 unsatisfiable classes (ROBOT ELK in SchemaScope CI)+10
  • OWL 2 DL profileoutside OWL 2 DL0
  • Upper-ontology alignmentno BFO/COB/DOLCE import found0
  • Standard relations (RO)does not import the Relation Ontology0
  • ROBOT report: no errors300 errors0
  • ROBOT report: warning density54 warnings / 77 classes = 0.700
  • Pitfall scan: no critical pitfalls0 critical, 2 important, 1 minor pitfall types (SchemaScope Python scan (OOPS! pitfall subset))+1
M Maintenance2/16
  • Recency2025-09-03 → 13.7 months (≤ 2 years)+2
  • Release cadence (12 months)0 releases0
U Community adoption0/16
  • Documented adopting projects0 projects0
  • Reused by other ontologies00
  • Community signalmax(stars 0 → 0, citations 0 → 0)0
P Penalties (inactivity & inconsistency)-1
  • Time since last activity1.1 years → 4 × max(0, 1.1 − 1)-1
  • Inactive statusnot archived, legacy or inactive0
  • Consistencyconsistent, no unsatisfiable classes0
  • ROBOT report errors300 errors against OBO conventions; not penalised (not an OBO-style ontology)0

FAIR subtotal 33/48 · earned 46/100 − 1 inactivity = 45/100 → grade D

Community adoption 0

No adopting projects documented yet.

Know a project that uses DCAT? 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 UTC45 D33http://www.w3.org/ns/dcat377JSON

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)w3.org26 Oct 2026, 02:49 UTC
Download link check (HTTP 200)w3.org26 Oct 2026, 02:49 UTC
Artefact header (version IRI)w3.org26 Oct 2026, 02:49 UTC
OLS classes, imports, version & releaseebi.ac.uk26 Oct 2026, 02:49 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 02:49 UTC
ROBOT reason/report in SchemaScope CI—25 Oct 2026, 21:54 UTC
OOPS! pitfall scanoops.linkeddata.es25 Oct 2026, 21:54 UTC

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