Ontology

REX

Physico-chemical process

An ontology of physico-chemical processes, i.e. physico-chemical changes occurring in course of time.

biochemistrychebichemistryenzymatic reactionlife sciencenfdi4catnfdi4chemobo

D42

FAIR 40/48

Version 2017-11-19

Evaluated 26 Oct 2026

How scores work

Source & access

Homepageebi.ac.uk Repositorygithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup Service Browse in BioPortalNCBO BioPortal Browse in OBO FoundryOBO Foundry registry

homepage ebi.ac.uk HTTP 200
repository github.com HTTP 200
download web.archive.org HTTP 200

Portals & registries

Source	ID	Version	Classes	Properties	Individuals	Loaded
OLS (EMBL-EBI)	`rex`	2026-03-31	552	17	0	25 Oct 2026
TIB Terminology Service	`rex`	2017-11-19	552	18	0	21 Aug 2023

Ontology IRI http://purl.obolibrary.org/obo/rex.owl
Version IRI http://purl.obolibrary.org/obo/rex/releases/2026-03-31/rex.owl

Languages en

Imports from (1)
IAO

Also registered as
bioportal: REX fairsharing: FAIRsharing.g0a7s0 obofoundry: rex ols: rex ontobee: REX tib.ts: rex

Automated evaluation

F Findable FAIR9/12

Persistent identifier (F1)purl.obolibrary.org+4
Indexed in services (F4)6: OLS, TIB, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
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)OBO Foundry, Bioregistry+3

I Interoperable FAIR10/12

Formal machine-readable format (I1)OWL, OBO+5
Semantic-web IRIs (I2)OWL, OBO+3
References other vocabularies (I3)imports 1: iao+2

R Reusable FAIR9/12

Clear license (R1.1)CC BY 4.0+5
Release provenance (R1.2)2017-11-19 (version IRI in the artefact)+4
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

Recency2026-08-18 → 2.2 months (≤ 3 months)+10
Release cadence (12 months)1 release (OLS version IRI)+2

U Community adoption0/16

Documented adopting projects0 projects0
Reused by other ontologies00
Community signalmax(stars 4 → 0, citations 0 → 0)0

P Penalties (inactivity & inconsistency)-10

Time since last activity0.2 years → 4 × max(0, 0.2 − 1)0
Inactive statusorphaned in OBO Foundry-10
Consistencynot yet checked by a reasoner0

FAIR subtotal 40/48 · earned 52/100 − 10 inactivity = 42/100 → grade D

Community adoption 0

No adopting projects documented yet.

Know a project that uses REX? Suggest it.

History & changes 1 run

History starts with the first archived run; changes appear after the next evaluation.

Run	Score	FAIR	Version evaluated	Terms	Snapshot
26 Oct 2026, 03:31 UTC	42 D	40	2017-11-19	552	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”.

Fact	Source	Retrieved
Homepage link check (HTTP 200)	ebi.ac.uk	26 Oct 2026, 03:19 UTC
Repository link check (HTTP 200)	github.com	26 Oct 2026, 03:19 UTC
Download link check (HTTP 200)	web.archive.org	26 Oct 2026, 03:19 UTC
Artefact header (version IRI)	web.archive.org	26 Oct 2026, 03:19 UTC
Git refs (commit f41afca)	github.com	26 Oct 2026, 03:19 UTC
GitHub repository statistics	api.github.com	26 Oct 2026, 03:19 UTC
OLS classes, imports, version & release	ebi.ac.uk	26 Oct 2026, 03:19 UTC
OBO Foundry status, license & usages	obofoundry.org	26 Oct 2026, 02:37 UTC
TIB Terminology Service metrics	service.tib.eu	26 Oct 2026, 03:19 UTC
Bioregistry mappings, dependencies & reuse	bioregistry.io	26 Oct 2026, 03:19 UTC