Vocabulary

BNF

Backus-Naur form

This ontology contains terms for defining a context-free grammar. The basic property is mustBeOneSequence which is equivalent to the expression of a production in the original simple BNF. Rules can be used to convert into and out of shorthand forms such as optional, repeating and token-separated list forms. Terminals are described either as a string, which is represented by itself, or are defined by a regular expression using cfg:matches.

computinglanguagelinguisticsw3
E1

FAIR 21/48

Version file of 2006-02-08

Evaluated 26 Oct 2026

How scores work

Source & access

Homepagew3.org DownloadCanonical file / PURL

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 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)RDF+5
  • Semantic-web IRIs (I2)RDF+3
  • References other vocabularies (I3)no imported vocabularies found0
R Reusable FAIR0/12
  • Clear license (R1.1)none found0
  • 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
  • Recency2006-02-08 → 248.5 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)-20
  • Time since last activity20.7 years → 4 × max(0, 20.7 − 1) (capped)-20
  • Inactive statusnot archived, legacy or inactive0
  • Consistencynot yet checked by a reasoner0

FAIR subtotal 21/48 · earned 21/100 − 20 inactivity = 1/100 → grade E

Community adoption 0

No adopting projects documented yet.

Know a project that uses BNF? 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 UTC1 E21file of 2006-02-08—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)w3.org26 Oct 2026, 02:40 UTC
Download link check (HTTP 200)w3.org26 Oct 2026, 02:40 UTC
Artefact headerw3.org26 Oct 2026, 02:40 UTC
Bioregistry mappings, dependencies & reusebioregistry.io26 Oct 2026, 02:40 UTC

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