Vocabulary

C4O

Citation Counting and Context Characterisation Ontology

An ontology that permits the number of in-text citations of a cited source to be recorded, together with their textual citation contexts, along with the number of citations a cited entity has received globally on a particular date.

sparsubject agnostic
E39

FAIR 27/48

Version 1.3.1

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagesparontologies.net Repositorygithub.com DownloadCanonical file / PURL

Portals & registries

Also registered as
fairsharing: FAIRsharing.beb855

Automated evaluation

F Findable FAIR3/12
  • Persistent identifier (F1)no PURL / w3id / DOI for the artefact0
  • Indexed in services (F4)2: Bioregistry, FAIRsharing+3
  • Citable reference (F2)no reference publication listed0
A Accessible FAIR9/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)only the source repository is reachable (no direct download)+3
  • Metadata persists in a registry (A2)Bioregistry+3
I Interoperable FAIR8/12
  • Formal machine-readable format (I1)RDF+5
  • Semantic-web IRIs (I2)RDF+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)1.3.1 (latest GitHub release); 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 Maintenance12/16
  • Recency2026-09-03 → 1.7 months (≤ 3 months)+10
  • Release cadence (12 months)1 release (GitHub releases)+2
U Community adoption0/16
  • Documented adopting projects0 projects0
  • Reused by other ontologies00
  • Community signalmax(stars 2 → 0, citations 0 → 0)0
P Penalties (inactivity & inconsistency)0
  • Time since last activity0.1 years → 4 × max(0, 0.1 − 1)0
  • Inactive statusnot archived, legacy or inactive0
  • Consistencynot yet checked by a reasoner0

FAIR subtotal 27/48 · earned 39/100 = 39/100 → grade E

Community adoption 0

No adopting projects documented yet.

Know a project that uses C4O? 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 UTC39 E271.3.1—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)sparontologies.net26 Oct 2026, 02:41 UTC
Repository link check (HTTP 200)github.com26 Oct 2026, 02:41 UTC
Download link check (HTTP fetch failed)lov.linkeddata.es26 Oct 2026, 02:41 UTC
Git refs (commit cbca6a9, latest tag 1.3.1)github.com26 Oct 2026, 02:41 UTC
GitHub repository statisticsapi.github.com26 Oct 2026, 02:41 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 02:41 UTC

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