W3C home > Mailing lists > Public > public-sdw-wg@w3.org > February 2017

Re: SDW plenary agenda item - Namespace for SOSA and SSN ontology

From: Krzysztof Janowicz <janowicz@ucsb.edu>
Date: Wed, 22 Feb 2017 11:58:10 -0800
To: Armin Haller <armin.haller@anu.edu.au>, Raphaël Troncy <raphael.troncy@eurecom.fr>, Maxime Lefrançois <maxime.lefrancois@emse.fr>, Clemens Portele <portele@interactive-instruments.de>
Cc: "public-sdw-wg@w3.org" <public-sdw-wg@w3.org>
Message-ID: <d8c9d586-0ec5-658e-31c1-3552075eae1b@ucsb.edu>
On 02/22/2017 11:57 AM, Armin Haller wrote:
> We do have the same problem with two namespaces if we only *reuse* a term in SSN from SOSA. Even with two namespaces, you would not be able to get the further restrictions on sosa:Platform defined in SSN unless you go to the location (URI) of the SSN ontology.

Agreed.

>
> On 23/2/17, 6:20 am, "Krzysztof Janowicz" <janowicz@ucsb.edu> wrote:
>
>      >
>      > So, http://www.w3.org/ns/sosa/Platform enables me to get the statement
>      > I can find in CORE ontology (i.e. the single statement telling me that
>      > this is rdfs:Class). How can I get the other statements (the
>      > restriction)?
>      
>      Same concern here and to a certain degree the answer I got was that you
>      cannot (which I think is problematic).
>      
>      Best,
>      Jano
>      
>      
>      On 02/22/2017 04:43 AM, Raphaël Troncy wrote:
>      > I still have more questions:
>      >
>      >> A term would be defined in at most one ontology, CORE or FULL.
>      >> Potentially, if this ontology is CORE, this term will be further
>      >> axiomatized (not defined), in the ontology FULL.
>      >
>      > This means that a concept (e.g. Platform) could be simply defined in
>      > the CORE ontology:
>      >
>      > sosa:Platform a rdfs:Class, owl:Class .
>      >
>      > and further axiomitized in the FULL ontology:
>      >
>      > sosa:Platform rdfs:subClassOf [
>      >   rdf:type owl:Restriction ;
>      >   owl:onProperty sosa:inDeployment ;
>      >   owl:allValuesFrom sosa:Deployment ]
>      >
>      >> So to answer your question, looking up
>      >> URI http://www.w3.org/ns/unify/TermInBothOntologies would redirect you
>      >> to CORE ontology if it is defined  in CORE.
>      >
>      > So, http://www.w3.org/ns/sosa/Platform enables me to get the statement
>      > I can find in CORE ontology (i.e. the single statement telling me that
>      > this is rdfs:Class). How can I get the other statements (the
>      > restriction)?
>      >
>      >   Raphaël
>      >
>      
>      
>      --
>      Krzysztof Janowicz
>      
>      Geography Department, University of California, Santa Barbara
>      4830 Ellison Hall, Santa Barbara, CA 93106-4060
>      
>      Email: jano@geog.ucsb.edu
>      Webpage: http://geog.ucsb.edu/~jano/
>      Semantic Web Journal: http://www.semantic-web-journal.net
>      
>      
>


-- 
Krzysztof Janowicz

Geography Department, University of California, Santa Barbara
4830 Ellison Hall, Santa Barbara, CA 93106-4060

Email: jano@geog.ucsb.edu
Webpage: http://geog.ucsb.edu/~jano/
Semantic Web Journal: http://www.semantic-web-journal.net
Received on Wednesday, 22 February 2017 19:58:46 UTC

This archive was generated by hypermail 2.4.0 : Thursday, 24 March 2022 20:31:30 UTC