[x3d-public] [Semantics] Minutes X3D Semantic Web 7 OCT 2019: X3D Ontology improvements review, X3dToTurtle.xslt plans

[John Carlson]

As previously discussed,  there are 2 Shape-anonymous and 2
Transform-anonymous nodes in HelloWorld.ttl. I think these need to be made
distinct.

On Mon, Oct 7, 2019 at 11:15 AM Brutzman, Donald (Don) (CIV) <
brutzman at nps.edu> wrote:

> Attendees: Jakub Flotynski, Athanasios Malamos and Don Brutzman.
>
> 1. *Group administration*
>
> Email list for this group:
>
>         https://www.web3d.org/member/member-only-mailing-lists
>         http://web3d.org/mailman/listinfo/semantics_web3d.org
>
> We still have not received a reply from Web3D Communications Team about
> making this a public list.
>
> As a result we will begin copying x3d-public as a routine until that
> problem is addressed.
>
> We also have a long-pending and repeated website request to make our
> ontology IRI match the website IRI.
>
>         https://www.web3d.org/semantics/ontologies/X3dOntology4.0
>
> which will redirect to
>
>         https://www.web3d.org/semantics/ontologies/X3dOntology4.0.ttl
>
> --------------
>
> 2. Discussion of EU Erasmus program opportunities.
>
>         https://ec.europa.eu/programmes/erasmus-plus
>
> --------------
>
> 3. *Review session*. We reviewed the many changes to ontology and related
> work.
>
> - email thread (multiple responses):
>
>
> http://web3d.org/mailman/private/semantics_web3d.org/2019-October/000121.html
>
> - website:
>
>         https://www.web3d.org/x3d/content/semantics/semantics.html
>
> 4. *XSLT*
>
> - We agreed on the naming convention, which allows tracing query results
> back to the original X3D model.
>
> - We discussed whether base IRI is required.  In the HelloWorld.ttl
> initial example, it is marked
>
> @prefix : <https://www.web3d.org/semantics/scenes/X3dScene1#> .
>
> We might do something with the meta identifier (if it exists), e.g.
>
>      <meta content='
> http://X3dGraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.x3d'
> name='identifier'/>
>
> becomes
>
>      @prefix : <
> http://X3dGraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.ttl>
> .
>
> which also matches the Web address where it will exist.  This can be
> automated for all models in X3D Example Archives.
>
> We can have stylesheet switches that omits or overrides such a value,
> depending on the person/tool converting.
>
> Therefore, over the next week HelloWorld.ttl will change accordingly.
> Since it is in version control, we can always re-check prior versions.
>
>
> https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/semantics/examples/HelloWorld.ttl
>
> This is a good goal for next week.  Additional requests welcome, we can
> always add TODO items!
>
> --------------
>
> 5. *X3D Ontology*
>
> There has been some work in using XML (e.g. .x3d) directly with RDF/OWL
> but we are deferring any such activity.
>
> TODO: there were a few links posted to the semantics at web3d.org list -
> some from TEI Crete - we will collect links for them for future
> consideration.  We will do this by email.
>
> Review points:
> a. removed ontology references to X3D XML Schema
> b. Since there is no information present in default values for fields,
> they will not be included in generated knowledge base like HelloWorld.ttl
> c. Default-value information is available in the X3D XML Schema, X3D XML
> DTD, and X3D Unified Object Model (X3DUOM).
> d. TODO: should we somehow include default values in the ontology, so that
> queries to determine if value is non-default?  Not clear, Jakub will look
> further whether it is possible and practical.
>
> e. Confirmed that owl:unionOf constructs are now working correctly,
> without warnings.
>
> f. Jakub noted that we should consistently use "a" when stating "rdf:type"
> - will fix.
>
> g. We discussed how some fields (e.g. 'translation') do not have a common
> object-model basis.
>
> TODO: Jakub will post a screenshot in response to minutes... I will find
> the autogeneration diagnostic that links these.
>
> Corrected OWLDoc link:
>
>
> https://www.web3d.org/x3d/content/semantics/documentation/owldoc/index.html
>
> Thanks for the quick review!  Continuing shared improvement is welcome.
>
> --------------
>
> 6. *Next Meeting*.  We agreed to continue meeting for one hour each week.
>
> Wow, very productive.  Have fun with X3D Semantic Web!  8)
>
> all the best, Don
> --
> Don Brutzman  Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA   +1.831.656.2149
> X3D graphics, virtual worlds, navy robotics
> http://faculty.nps.edu/brutzman
> --
> Semantics mailing list
> Semantics at web3d.org
> http://web3d.org/mailman/listinfo/semantics_web3d.org
>
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