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

[John Carlson]

Also, Appearance-anonymous:


https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/semantics/examples/HelloWorld.ttl

On Mon, Oct 7, 2019 at 1:03 PM John Carlson <yottzumm at gmail.com> wrote:

> 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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