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

Just to avoid confusion. Armin is talking about ssn:System, not 
sosa:System (which does not exist). The concept that does exist in SOSA 
is sosa:Platform.


On 02/21/2017 03:56 PM, Armin Haller wrote:
> Hi Raphaël,
>
> Thanks for your comment! In fact, the wiki is so detailed on the mechanics is because we *only* want to vote on the mechanics of the namespace issue tomorrow. The classes/properties that are shown are only exemplative. We have separate issues around the Platform and System class (i.e. https://www.w3.org/2015/spatial/wiki/Platform). In fact, there is a sosa:System and all current proposals under consideration in the Platform/System issue do retain a sosa:System class in the core. Please do ignore the modelling of those classes for tomorrow’s vote.
>
> Once we have come to a decision on the *mechanics* on how to deal with namespaces we can tackle the remaining issues with the architecture of the integration (see also https://www.w3.org/2015/spatial/wiki/Proposals_for_rewriting_SSN), i.e. essentially a decision on *reuse of classes/properties only in SSN* or *equivalence/subclass/-property relationships in SSN to SOSA classes/ property*.
>
> Cheers,
> Armin
>
> On 22/2/17, 10:24 am, "Raphaël Troncy" <raphael.troncy@eurecom.fr> wrote:
>
>      Dear Armin, all,
>      
>      > If you have an opinion on this, please do have a close look at the two
>      > options on our Wiki page that outline the implementation implications of
>      > each option: https://www.w3.org/2015/spatial/wiki/NamespaceIssue
>      
>      I think that the two options are insufficiently described in order to
>      make an informed decision (sections 3.1 and 3.2). There is a lot of text
>      explaining the mechanics of content negotiation which is sort of obvious
>      for anyone who is familiar with the linked data concepts. On the
>      contrary, there is insufficient information on the bulk of the issue,
>      i.e. what (concepts and properties) is defined where, what is re-used,
>      what is being further defined with more axioms between SOSA and (new) SSN.
>      
>      In the current option 1, one can only see the definition of a
>      sosa:Platform in the sosa namespace, while this concept is further
>      axiomatized in ssn.ttl using the concept of ssn:System. Does this mean
>      that there is no sosa:System?
>      
>      I wish that the wiki page was not distracted by all the mechanics of
>      trivial content negotiation and linked data terms dereferencing, and
>      instead, focus on what is defined where precisely and exhaustively.
>      Best regards.
>      
>         Raphaël
>      
>      --
>      Raphaël Troncy
>      EURECOM, Campus SophiaTech
>      Data Science Department
>      450 route des Chappes, 06410 Biot, France.
>      e-mail: raphael.troncy@eurecom.fr & raphael.troncy@gmail.com
>      Tel: +33 (0)4 - 9300 8242
>      Fax: +33 (0)4 - 9000 8200
>      Web: http://www.eurecom.fr/~troncy/
>      
>


-- 
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 00:28:18 UTC