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

From: Armin Haller <armin.haller@anu.edu.au>
Date: Wed, 22 Feb 2017 19:57:13 +0000
To: "janowicz@ucsb.edu" <janowicz@ucsb.edu>, 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: <D46AE70B-77CB-4741-8471-F460645BD588@anu.edu.au>
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.

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

    
    

Received on Wednesday, 22 February 2017 19:57:54 UTC

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