Ontology

CDO

Change Detection Ontology (CDO)

The Change Detection Ontology (CDO) is used to capture information which relates the changes that have occured within the source data of an RDF dataset. The ontology allows a notification policy to be defined which will notify users when a defined threshold of changes has been reached. Once notified the mapping and source data should be re-examined to ensure no further action is required to prevent a decrease in quality.

E4

FAIR 16/48

Version file of 2022-12-05

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagew3id.org DownloadCanonical file / PURL

Automated evaluation

F Findable FAIR0/12
  • Persistent identifier (F1)w3id.org PURL does not resolve to the artefact (redirects to a web page)0
  • Indexed in services (F4)not indexed anywhere0
  • Citable reference (F2)no reference publication listed0
A Accessible FAIR3/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download resolves to a web page, not the file0
  • Metadata persists in a registry (A2)not in Bioregistry or OBO Foundry0
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 FAIR5/12
  • Clear license (R1.1)CC0 1.0+5
  • 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 & 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 Maintenance0/16
  • Recency2022-12-05 → 46.7 months (older / unknown)0
  • 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)-12
  • Time since last activity3.9 years → 4 × max(0, 3.9 − 1)-12
  • Inactive statusnot archived, legacy or inactive0
  • Consistencynot yet checked by a reasoner0

FAIR subtotal 16/48 · earned 16/100 − 12 inactivity = 4/100 → grade E

Community adoption 0

No adopting projects documented yet.

Know a project that uses CDO? 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 UTC4 E16file of 2022-12-05—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)w3id.org26 Oct 2026, 02:42 UTC
Download link check (HTTP 200)w3id.org26 Oct 2026, 02:42 UTC
Artefact headeralex-randles.github.io26 Oct 2026, 02:42 UTC

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