- From: Ghislain ATEMEZING <ghislain.atemezing@gmail.com>
- Date: Fri, 12 Aug 2022 16:07:11 +0200
- To: "Harshvardhan J. Pandit" <me@harshp.com>
- Cc: semantic-web@w3.org
- Message-ID: <CA+Ogc+ff5726oAAu5r89Gy3id15Y6zOde6wiRwy4EDmovXfpWg@mail.gmail.com>
Hi Harsh,
re "I tried looking at some well-known vocabularies that reuse concepts, but
couldn't see any such documentation of reused terms within the RDF
itself, just in the HTML."
Many you'll find in the following list of vocabularies:
- In DCAT vocab, https://www.w3.org/ns/dcat2.ttl, you'll find two
copies/definitions of two external properties foaf:homepage and
foaf:primaryTopic
- In ssn https://www.w3.org/ns/ssn/, you'll find some sosa concepts (
https://www.w3.org/ns/sosa/) redefined.
- In PROV-O,https://www.w3.org/ns/prov.ttl, there are several definitions
from other ontologies.
Hope that helps.
Best,
Ghislain
On Fri, Aug 12, 2022 at 2:51 PM Harshvardhan J. Pandit <me@harshp.com>
wrote:
> Hi. Thanks both (Ghislain and Anelia) for sharing your thoughts.
>
> @Ghislaine I think your approach would require duplicating / redefining
> the concept within the new vocabulary, whereas my thoughts are about
> using the original IRI for the concept, and just adding annotations in
> the new vocabulary. Like this:
>
> graph <http://example.com/A> {
> <http://example.com/A/Concept> a rdfs:Class .
> }
>
> graph <http://example.com/B> {
> <http://example.com/A/Concept> a rdfs:Class .
> <http://example.com/A/Concept> rdfs:isDefinedBy
> <http://example.com/A> .
> <http://example.com/vocab/A/Concept> rdfs:comment "Use this for..." .
> }
>
> Also, dct:source may be used to indicate the origin of the concept e.g.
> in some document, so it wouldn't be consistent to use to indicate a
> concept comes from another vocabulary.
>
> I tried looking at some well-known vocabularies that reuse concepts, but
> couldn't see any such documentation of reused terms within the RDF
> itself, just in the HTML.
>
> Regards,
> Harsh
>
> On 12/08/2022 11:34, Ghislain ATEMEZING wrote:
> > Hi,
> > I don't know if there is a clear recommendation regarding the approaches
> > for documenting reuse concepts.
> > One could harvest vocabulary catalogs (e.g., Linked Open Vocabularies)
> > to check what emerges from ontology creators' practices.
> >
> > There could be yet another different approach.
> > Here all the concepts of the ontology use rdfs:isDefinedBy to point to
> > the ontology's URI and dcterms:source is used for the provenance of the
> > original concept in the new ontology.
> >
> > <original ontology ex:A>
> > exo:Concept a rdfs:Class ;
> > rdfs:label "Concept in original ontology" ;
> > *rdfs:isDefinedBy exo: ;*
> > *.
> > *
> > <new ontology ex:B>
> > ex:Concept a rdfs:Class ;
> > rdfs:label "New Concept " ;
> > *dcterms:source exo:Concept* ;
> > *rdfs:isDefinedBy ex: ;*
> > rdfs:comment "We use Concept to do ..." ;
> > .
> >
> > Does that also make sense?
> >
> > Best,
> > Ghislain
> >
> > On Thu, Aug 11, 2022 at 5:57 PM Harshvardhan J. Pandit <me@harshp.com
> > <mailto:me@harshp.com>> wrote:
> >
> > Hi.
> > tldr; How to document external concepts (e.g. external:Concept) being
> > reused in a separate vocabulary (e.g. vocab A) ? Is there any
> existing
> > "good practices" that have been around for this use-case?
> >
> > The semantic web good practices suggest we utilise existing
> > vocabularies
> > where viable and available, and to avoid "redefining" them within the
> > new vocabulary. However, I'm not aware of any guidance on how such
> > reuses are to be documented within (newer) vocabularies and
> ontologies.
> >
> > ---
> >
> > # First Approach - using rdfs:isDefinedBy
> >
> > I've noticed Protege's outputs contain (externally) defined classes
> and
> > annotations within an ontology - and I haven't come across any
> > annotations over external concepts. There is nothing in the output
> that
> > indicates the terms are "external", other than manually comparing
> > ontology IRI with term IRI.
> >
> > WIDOCO's best practices (https://w3id.org/widoco/bestPractices
> > <https://w3id.org/widoco/bestPractices>) suggests
> > using rdfs:isDefinedBy to indicate the origin of the term, so this
> can
> > be utilised to document the original vocabulary the term came from.
> > Using this, perhaps it is possible to provide labels, definitions,
> etc.
> > as needed - with rdfs:isDefinedBy indicating the terms is being
> reused
> > from an external source.
> >
> > <original ontology ex:A>
> > :Concept a rdfs:Class ; rdfs:label "Concept" .
> >
> > <new ontology ex:B>
> > :Concept a rdfs:Class ;
> > rdfs:label "New Concept" ;
> > rdfs:isDefinedBy ex:A ;
> > rdfs:comment "We use Concept to do ..." .
> >
> > ---
> >
> > # Second Approach: simple comment using skos:scopeNote
> >
> > So my attempt at a simple solution is to just use skos:scopeNote over
> > the concept explaining how that concept is expected to be used.
> >
> > <new ontology A>
> > external:Concept skos:scopeNote "We use this Concept as ..." .
> >
> > ---
> >
> > Problems: what happens the original and new ontologies are combined
> in
> > one graph - there will be duplicate labels, comments, etc. Would
> > this be
> > a problem? I don't think so, since they both are documentations from
> > respective ontologies, but I'm not sure if this may cause a problem
> in
> > some other use-case.
> >
> > Since I'm not aware of any examples of tooling supporting the use of
> > either skos:scopeNote or rdfs:isDefinedBy to distinguish between
> > external and current concepts, I'm unsure which option is better. I
> > prefer the first one since it explicitly indicates the external
> source
> > of a concept, but thought I'd ask the community before rushing ahead
> > and
> > using it in code.
> >
> > Regards,
> > --
> > ---
> > Harshvardhan J. Pandit, Ph.D
> > Research Fellow
> > ADAPT Centre, Trinity College Dublin
> > https://harshp.com/ <https://harshp.com/>
> >
> >
> >
> > ---
> > Ghislain Atemezing, Ph.D
> > R&D Director, MONDECA
> > Paris, France www.mondeca.com <http://www.mondeca.com/>
> >
> >
>
> --
> ---
> Harshvardhan J. Pandit, Ph.D
> Research Fellow
> ADAPT Centre, Trinity College Dublin
> https://harshp.com/
>
--
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Web: http://atemezing.org
Received on Friday, 12 August 2022 14:07:35 UTC