Vocabulary

DDC

Dewey Decimal Classification

The Dewey Decimal Classification (DDC) system, devised by library pioneer Melvil Dewey in the 1870s and owned by OCLC since 1988, provides a dynamic structure for the organization of library collections. Now in its 23rd edition, and available in print and Web versions, the DDC is the world's most widely used library classification system.

E6

FAIR 9/48

Evaluated 26 Oct 2026

How scores work

Source & access

Homepageoclc.org

Portals & registries

Also registered as
wikidata.entity: Q48460

Automated evaluation

F Findable FAIR1/12
  • Persistent identifier (F1)no PURL / w3id / DOI for the artefact0
  • Indexed in services (F4)1: Bioregistry+1
  • Citable reference (F2)no reference publication listed0
A Accessible FAIR6/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)no download or repository listed0
  • Metadata persists in a registry (A2)Bioregistry+3
I Interoperable FAIR0/12
  • Formal machine-readable format (I1)none of: —0
  • Semantic-web IRIs (I2)no RDF/OWL/JSON-LD representation0
  • References other vocabularies (I3)no imported vocabularies found0
R Reusable FAIR2/12
  • Clear license (R1.1)http://rightsstatements.org/vocab/InC/1.0 (not a recognised open license)+2
  • Release provenance (R1.2)no version in artefact, registry or release tags0
  • Community standards (R1.3)no independent compliance report (not on the OBO Dashboard)0
Q Ontology consistency & qualityn/a
  • Not applicablevocabulary without an OWL/OBO/RDF artefact; total scaled from 80 to 1000
M Maintenance0/16
  • Recencyno activity evidence0
  • 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)-5
  • No activity evidenceno commits, releases or dated files found-5
  • Inactive statusnot archived, legacy or inactive0

FAIR subtotal 9/48 · earned 9/80 → scaled 11 − 5 inactivity = 6/100 → grade E

Community adoption 0

No adopting projects documented yet.

Know a project that uses DDC? 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 UTC6 E9——JSON

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)oclc.org26 Oct 2026, 02:50 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 02:50 UTC

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