@base <http://w3id.org/oseg/ont/otrl> .
@prefix cc: <http://creativecommons.org/ns#> .
@prefix dcam: <http://purl.org/dc/dcam/> .
@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix osegprof: <http://w3id.org/oseg/ont/oseg-profiles#> .
@prefix otrl: <http://w3id.org/oseg/ont/otrl#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix schema: <http://schema.org/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix spdx: <http://spdx.org/rdf/terms#> .
@prefix spdxl: <http://spdx.org/licenses/> .
@prefix vaem: <http://www.linkedmodel.org/schema/vaem#> .
@prefix vann: <http://purl.org/vocab/vann/> .
@prefix vs: <http://www.w3.org/2003/06/sw-vocab-status/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<>
  a
    owl:Ontology ,
    spdx:SpdxItem ;
  rdfs:comment """
# SPDX-FileCopyrightText: 2020 - 2021 Martin Häuer <martin.haeuer@ose-germany.de>
# SPDX-FileCopyrightText: 2020 - 2025 Robin Vobruba <hoijui.quaero@gmail.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later
""" ;
  owl:versionInfo "1.1.0" ;
  owl:versionIRI <http://w3id.org/oseg/ont/1.1.0/otrl> ;
  cc:license "https://www.gnu.org/licenses/gpl-3.0.txt" ;
  dcat:contactPoint "https://github.com/iop-alliance/OpenKnowHow/" ;
  dcat:keyword
    "OTRL" ,
    "category" ,
    "design" ,
    "hardware" ,
    "open-source" ,
    "open-source-hardware" ,
    "project" ;
  dcterms:created "2021-02-22"^^xsd:date ;
  dcterms:creator
    osegprof:martinHaeuer ,
    osegprof:robinVobruba ;
  dcterms:description "This can be used to assess an Open Source Hardware projects stage of technical development and its documentation."@en ;
  dcterms:issued "2021-08-24T16:32:33Z"^^xsd:dateTimeStamp ;
  dcterms:language <http://id.loc.gov/vocabulary/iso639-1/en> ;
  dcterms:license "https://www.gnu.org/licenses/gpl-3.0.txt" ;
  dcterms:publisher osegprof:Iopa ;
  dcterms:source "https://github.com/iop-alliance/OpenKnowHow/master/src/spec/otrl.ttl" ;
  dcterms:title "Open Technology & Documentation Readiness Level (OTRL) ontology"@en ;
  schema:codeRepository "https://github.com/iop-alliance/OpenKnowHow/" ;
  schema:comment "Descriptions (`rdfs:comment`) from NASA are used under public domain"@en ;
  schema:creator
    osegprof:martinHaeuer ,
    osegprof:robinVobruba ;
  skos:editorialNote """Regarding the use of `dcam:domainIncludes`
and `dcam:rangeIncludes` in this ontology:
Looking at the definitions for the RDFS version
of the two, `rdfs:domain` and `rdfs:range`:
* https://www.w3.org/TR/rdf-schema/#ch_domain
* https://www.w3.org/TR/rdf-schema/#ch_range
and as described in this StackOverflow answer:
<https://stackoverflow.com/a/74782257/586229>,
multiple objects for the two RDFS properties mean,
that *all of them* apply, simultaneously,
not *one of them*.
You may think of this as an `AND` coupling.
We want the *one of them* meaning though (`OR`).
The `dcam:*` properties give us just that.
Though there is an additional,
very important difference:
The `*Includes` properties are just suggestions,
so if they are used, it is left open to use other,
not mentioned class as domain or range too."""@en ;
  spdx:licenseDeclared spdxl:GPL-3.0-or-later ;
  vann:preferredNamespacePrefix "otrl" ;
  vann:preferredNamespaceUri "http://w3id.org/oseg/ont/otrl#"^^xsd:anyURI ;
  .

otrl:ODRL
  a owl:Class ;
  rdfs:label "Open Documentation Readiness Level"@en ;
  rdfs:comment "Documentation Readiness Level for open source hardware"@en ;
  vs:term_status "unstable" ;
  .

otrl:OTRL
  a owl:Class ;
  rdfs:label "Open Technology Readiness Level"@en ;
  rdfs:comment "Technology Readiness Level for open source hardware"@en ;
  vs:term_status "unstable" ;
  .

otrl:exitCriteria
  a owl:DatatypeProperty ;
  rdfs:label "exit criteria"@en ;
  rdfs:comment "Criteria to exit this OTRL/ODRL for the next higher one; inspired by: https://www.nasa.gov/pdf/458490main_TRL_Definitions.pdf"@en ;
  dcam:domainIncludes
    otrl:ODRL ,
    otrl:OTRL ;
  rdfs:range rdf:langString ;
  vs:term_status "unstable" ;
  owl:cardinality 1 ;
  .

otrl:goal
  a owl:DatatypeProperty ;
  rdfs:label "goal"@en ;
  rdfs:comment "Goal or purpose of this OTRL/ODRL"@en ;
  dcam:domainIncludes
    otrl:ODRL ,
    otrl:OTRL ;
  rdfs:range rdf:langString ;
  vs:term_status "unstable" ;
  owl:cardinality 1 ;
  .

otrl:ODRL1
  a otrl:ODRL ;
  rdfs:label "ODRL-1"@en ;
  rdfs:comment "Documentation process commenced"@en ;
  vs:term_status "unstable" ;
  otrl:exitCriteria "(OSHWA-compliant) free/open license applied on published material"@en ;
  otrl:goal "Published information under free open source license"@en ;
  .

otrl:ODRL2
  a otrl:ODRL ;
  rdfs:label "ODRL-2"@en ;
  rdfs:comment "Collaborative documentation in progress"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Provision of documentation files and in editable formats enabling collaboration development"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:ODRL3
  a otrl:ODRL ;
  rdfs:label "ODRL-3"@en ;
  rdfs:comment "Full documentation published"@en ;
  vs:term_status "unstable" ;
  otrl:exitCriteria "stable release"@en ;
  otrl:goal "Complete documentation as per DIN SPEC 3105-1"@en ;
  .

otrl:ODRL3Star
  a otrl:ODRL ;
  rdfs:label "ODRL-3*"@en ;
  rdfs:comment "Full documentation published & audited"@en ;
  vs:term_status "unstable" ;
  otrl:exitCriteria "proof of compliance after DIN SPEC 3105-2 or equivalent (such as a scientific publication, OSHWA certification, RYF certification)"@en ;
  otrl:goal "Public evidence of documentation maturity"@en ;
  .

otrl:ODRL4
  a otrl:ODRL ;
  rdfs:label "ODRL-4"@en ;
  rdfs:comment "Full documentation for product qualification"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Product qualification documents published enabling decentralized commercial distribution"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:OTRL1
  a otrl:OTRL ;
  rdfs:label "OTRL-1"@en ;
  rdfs:comment "Ideation"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Product idea; needs are identified and initial specifications are defined."@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:OTRL2
  a otrl:OTRL ;
  rdfs:label "OTRL-2"@en ;
  rdfs:comment "Conception"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Mature product concept has been formulated"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:OTRL3
  a otrl:OTRL ;
  rdfs:label "OTRL-3"@en ;
  rdfs:comment "Development"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Product model is developed"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:OTRL4
  a otrl:OTRL ;
  rdfs:label "OTRL-4"@en ;
  rdfs:comment "Prototyping and testing"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Full functional prototype is built and tested"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:OTRL5
  a otrl:OTRL ;
  rdfs:label "OTRL-5"@en ;
  rdfs:comment "Manufacturing development"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Fairly reliable processes identified and characterized"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .

otrl:OTRL6
  a otrl:OTRL ;
  rdfs:label "OTRL-6"@en ;
  rdfs:comment "Product qualification"@en ;
  vs:term_status "unstable" ;
  otrl:goal "Certificate marking conformity assessment or comparable"@en ;
  vaem:todo "TODO `otrl:exitCriteria \"TODO\"@en ;`" ;
  .