- From: Krzysztof Janowicz <janowicz@ucsb.edu>
- Date: Wed, 22 Feb 2017 11:17:24 -0800
- To: Raphaël Troncy <raphael.troncy@eurecom.fr>, Maxime Lefrançois <maxime.lefrancois@emse.fr>, Armin Haller <armin.haller@anu.edu.au>, "public-sdw-wg@w3.org" <public-sdw-wg@w3.org>
On 02/22/2017 04:33 AM, Raphaël Troncy wrote: >> Please find this new section here: >> https://www.w3.org/2015/spatial/wiki/NamespaceIssue#Three_options_in_a_nushell >> > > Thanks, this is helpful, although this triggers questions as well (the > devil is in the details). Let me ask those questions, quoting your > wording: > > Option 1: (Two names and namespaces: SOSA and SSN) > "2. SSN has IRI and location <http://www.w3.org/ns/ssn/>. It imports > SOSA, adds axioms to sosa: terms, and defines new terms under the > namespace ssn:" > > When adding new axioms to sosa: terms, does it do so in the sosa > namespace, i.e. "hijacking" the sosa definition? Or does it clone the > term in the ssn namespace with the same intended semantics but just > more axioms? This "hijacking" is a concern that I also mentioned several times and that I am really worried about. Best, Jano > > "3. Looking up the URI of a term redirects to the ontology where this > term is defined, i.e., SOSA if the term is in the sosa: namespace, and > SSN if the term is in the SSN namespace." > > What is happening if both sosa.ttl and ssn.ttl contain "some" > statements defining the concept of "sosa:Platform"? > > Option 2: (One unified name and namespace: SOSA) > "Looking up the URI of a term redirects to the ontology where this > term is defined, i.e., sosa:CoreVocabulary if the term is defined > there, sosa:FullOntology otherwise." > > What is happening if both sosa/CoreVocabulary.ttl and > sosa/FullOntology.ttl contain "some" statements defining the concept > of "sosa:Platform"? > >> Let CORE = "SOSA OR sosa:CoreVocabulary OR ssn:CoreVocabulary" >> Let FULL = "SSN OR sosa:FullOntology OR ssn:FullOntology" >> indeed: >> - xxx:Platform is defined in CORE, and further axiomatized in FULL. >> Looking up this URI redirects to CORE > > Does this mean that any concept defined in CORE (sosa:xxx) will have a > clone defined in FULL (ssn:xxx) as soon as one wants to "further" > axiomatize this concept? And that ssn:xxx will have some relationships > (e.g. rdfs:subClassOf) with sosa:xxx as part of this axiomatization? > >> The list of terms that will be defined in CORE and FULL is still under >> discussion at this stage. > > OK, I got this. > > 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 19:18:30 UTC