[semantics-public] X3D Semantic Web minutes 14 OCT 2019: paper plans, mailing lists, X3D examples unit testing, X3D Ontology
John Carlson
yottzumm at gmail.com
Mon Oct 14 11:19:51 PDT 2019
Re: positioned DEF-USE
Some work needs to be done on positioning a USE node within a parent. I
suggest not only a singleton hasParent, but also a hasNodePosition within
the USE node.
Re: OSNAP.
We can probably use the same .ttl reader for both OSNAP and ttl to X3D XML
model converter? What do you think?
John
On Mon, Oct 14, 2019 at 11:36 AM Brutzman, Donald (Don) (CIV) <
brutzman at nps.edu> wrote:
> The X3D Semantic Web Working Group mission is to publish models to the Web
> using X3D in order to best gain Web interoperability and enable intelligent
> 3D applications, feature-based 3D model querying, and reasoning over 3D
> scenes.
>
> https://www.web3d.org/working-groups/x3d-semantic-web
>
> We plan to hold a regular weekly meeting Monday 14 OCT 2019 at regular
> time, 0800-0900 pacific.
>
> https://www.web3d.org/member/teleconference-information
>
> Attendees: Jakub Flotynsky, Athanasios Malamos, Don Brutzman.
>
> =========================
>
> 1. *Conference and paper publication planning*
>
> Current work.
>
> a. Thanos and Jakub discussed possible visits and European Union
> collaboration support under Erasmus program.
>
> Erasmus+: International Collaboration Between Transilvania
> University of Brasov (Romania) and Georgia Southern University
>
> https://academics.georgiasouthern.edu/international/international-initiatives/erasmus/
>
> Felix: it looks like you had some interesting X3D presentations last
> year. We are happy to share the information if that is OK. Also wondering
> whether ERASMUS+ support for work with USA is possible.
>
> 2018 Presentations
> * March 21 – Prof. Felix Hamza-Lup, presented “Introduction to X3D –
> Paradigms, Static and Dynamic Scenes” at the Transilvania University in
> Brasov, Romania.
> * March 22 – Prof. Felix Hamza-Lup, presented “Web-based 3D User
> Interfaces”, at the Transilvania University in Brasov, Romania.
>
> ------
>
> b. Abstract has been accepted for presentation at 1630 on Tuesday 3
> December 2019 t Semantic Web Pro (SemWeb.Pro) conference in Paris.
>
> http://semweb.pro/semwebpro-2019.html
>
> Christophe, might you and Yves be able to handle the presentation duties?
> Jakub will work to be available during the presentation, if needed we can
> reserve the Web3D Zoom channel for his audio and video connection. I am
> also interested in connecting as well (Thanos is teaching at that time).
>
> Don will add the event and abstract to the website, Jakub will provide
> updated slides when available (extending the Web3D 2019 slides).
>
> c. IC3D Paper has been submitted (shared previously) and we are awaiting
> review comments.
>
> Jakub, I am hoping that we can update and publish your TTL and SPARQL
> queries to match our current X3D Ontology. We will try to do that over
> email. (Confirming that all nodes are named for .x3d to .ttl conversion.)
>
> d. Thanos discussed book-chapter possibilities... more to follow during
> next week's regular teleconference, he is outlining a draft.
>
> =========================
>
> 2. *Mailing list change*. As requested and discussed, we now have a new
> semantics-public mailing list.
>
> https://www.web3d.org/mailman/listinfo/semantics-public_web3d.org
>
> Transition message:
>
> semantics-public mailing list is now primary for X3D Semantic Web
> Working Group discussions
>
> http://web3d.org/pipermail/semantics-public_web3d.org/2019-October/000001.html
>
> > Since this has been discussed and planned over the course of multiple
> meetings, for communications continuity and as a convenience I've taken the
> liberty of subscribing all of the current 11 participants there.
> >
> > In general we will use the semantics-public list for working group
> traffic. We have not had any member-only information during the past year
> of effort. Past mail archives remain at
> >
> > Semantics at web3d.org Archives
> > http://web3d.org/mailman/private/semantics_web3d.org
> >
> > If you want to modify your mailing-list membership information for any
> reason, please do so. Both the webmaster and I are ready to help, if
> needed.
> >
> > semantics-public at web3D.org
> > semantics-public -- X3D Semantic Web Working Group (public
> discussion)
> > https://www.web3d.org/mailman/listinfo/semantics-public_web3d.org
> >
> > semantics at web3D.org
> > semantics -- X3D Semantic Web (member-only discussion)
> > http://web3d.org/mailman/listinfo/semantics_web3d.org
> >
> > All questions and suggestions are welcome. Looking forward to
> continuing progress together.
> =========================
>
> 3. *X3D Example Archive Updates*
>
> * /Triple naming/
>
> As reported in last week's X3D Working Group minutes, several thousand
> XML-based .x3d models in the X3D Example Archives have been converted into
> .ttl Turtle Triples.
>
> Great work by Jakub on the X3dToTurtle.xslt conversion stylesheet! After
> omitting default attribute values and adding name uniqueness, I've only had
> to do a few minor touchups to handle special cases in the mass unit testing.
>
> Note that the naming of triples is derived on original scene-graph
> structure, allowing unnamed (no DEF) nodes to be correlated in original
> model. For example, in attached HelloWorld.ttl model:
>
> * Since they are singletons, :X3D :head and :Scene are always the same for
> a given model.
>
> * No anonymous node names are used.
>
> * :meta_1_2 means first child element under X3D (head) followed by
> second child element (second meta tag).
>
> * :Shape_2_2_2_1 means second child element under X3D (Scene), followed by
> second child element (Group), followed by second child (Transform), then
> first child (the Shape of interest).
>
> * :MaterialLightBlue means the node having DEF="MaterialLightBlue"
>
> * :MaterialLightBlue-USE-1 means the first node with
> USE="MaterialLightBlue"
>
> For example, in original .x3d and derived .ttl representations, we find
>
> /////////////////////////////////////////////////////////////
> <Material DEF='MaterialLightBlue' diffuseColor='0.1 0.5 1'/>
> <Material USE='MaterialLightBlue'/>
>
> :MaterialLightBlue a owl:NamedIndividual, x3d:Material ;
> x3d:diffuseColor "0.1 0.5 1" .
>
> :MaterialLightBlue-USE-1 a owl:NamedIndividual, x3d:Material .
> /////////////////////////////////////////////////////////////
>
> The sequence of RDF/OWL definitions does not matter. These numbers refer
> to placement in the original .x3d scene graph.
>
> Note that a USE node cannot have a corresponding DEF. We could have the
> default naming convention for USE nodes, in which case it would have been
> named something much less descriptive, such as
> :Material_2_2_3_1_2_1
>
> Perhaps there is one or more relationships we want to add for USE nodes
> that indicates it is related to the original node, as a draft example for
> instance:
>
> :MaterialLightBlue-USE-1 a owl:NamedIndividual, x3d:Material;
> x3d:isUseCopyOf :MaterialLightBlue; # superfluous or useful?
> owl:sameAs :MaterialLightBlue .
>
> or, perhaps even better, we define in X3D ontology the following
> relationship:
>
> x3d:isUseCopyOf rdfs:subPropertyOf owl:sameAs.
>
> The resulting construct in a .ttl translation would then be
>
> :MaterialLightBlue-USE-1 a owl:NamedIndividual, x3d:Material;
> x3d:isUseCopyOf :MaterialLightBlue .
>
> This is an improvement: we have a human-readable label, we have a formal
> relationship that can be reasoned over. However a deficiency is that
> original scene graph structure can't necessarily be reconstructed as an X3D
> model. So we either need to change label for consistency to something like
> ::MaterialLightBlue-USE_2_2_3_1_2_1
>
> Pressing even farther, perhaps better is to simply define the parent of
> each element as a contained property. This would give us *our expected
> change* to look like
>
> :MaterialLightBlue-USE-1 a owl:NamedIndividual, x3d:Material;
> x3d:isUseCopyOf :MaterialLightBlue;
> # owl:sameAs :MaterialLightBlue ; # derived by reasoner
> x3d:hasParent :Appearance_2_2_3_1_2 .
>
> ... and so on. Happily this also provides all of the
> parent/child/ancestor/descendant relationships in a scene!
>
> Here are the relationships which Jakub already wrote in X3D Ontology:
>
> ###############################################
>
> # Special Properties
>
> :hasChild a owl:ObjectProperty ;
> rdfs:subPropertyOf :hasDescendant ;
> dc:description "X3D element (node or statement) has a child element" .
>
> :hasParent a owl:ObjectProperty ;
> owl:inverseOf :hasChild;
> rdfs:subPropertyOf :hasAncestor ;
> dc:description "X3D element (node or statement) has a parent element" .
>
> :hasDescendant a owl:ObjectProperty ;
> owl:inverseOf :hasAncestor;
> dc:description "X3D element (node or statement) has descendant element"
> .
>
> :hasAncestor a owl:ObjectProperty , owl:TransitiveProperty ;
> dc:description "X3D element (node or statement) has ancestor element" .
>
> ###############################################
>
> We discussed the warning in the ontology validator... not sure why it is
> occurring, possibly overzealous, potentially an issue in our use of
> transitive properties. Our definition seems correct so we will leave it as
> is.
>
> Property Analysis
> Non-simple properties
> hasAncestor
> Explanation: 1
> Transitive: hasAncestor
> hasDescendant
> Explanation: 1
> Transitive: hasAncestor
> hasDescendant InverseOf hasAncestor
>
> ------
>
> Future TODO: figure out how to reconstruct original model from the .ttl.
>
> I will add these improvements to the X3dToTurtle.xslt conversion
> stylesheet, and add this design pattern description to X3D Ontology page.
>
> ------
>
> * /Build log of conversions results/
>
> Build log reveals very few conversion errors when tested using a simple
> SPARQL query.
>
> https://web3d.org/x3d/content/examples/build.turtle.all.log.txt
>
> When a query table by Apache Jena ARQ is empty, as follows, that means the
> query succeeded but found no WorldInfo nodes to report results.
>
> ===================================
> create turtle:
> C:\x3d-code\www.web3d.org\x3d\content\examples\X3dForAdvancedModeling/Buildings//ArchHalf.x3d
> processing with X3dToTurtle stylesheet...
> C:\x3d-code\www.web3d.org\x3d\content\examples\X3dForAdvancedModeling/Buildings//ArchHalf.ttl
> self-validation test:
> Copying 1 file to C:\x3d-code\www.web3d.org
> \x3d\content\examples\X3dForAdvancedModeling\Buildings
> C:\languages\java\apache-jena-3.12.0\bat\arq.bat --data C:\x3d-code\
> www.web3d.org\semantics/ontologies/X3dOntology4.0.ttl --query C:\x3d-code\
> www.web3d.org\semantics/queries/X3dHelloWorldQuery_03.rq --graph
> Buildings//ArchHalf.ttl
> -------------------------
> | WorldInfoNode | title |
> =========================
> -------------------------
> X3dToTurtle.xslt conversion of ArchHalf.x3d to ArchHalf.ttl complete.
> ===================================
>
> ===================================
> create turtle:
> C:\x3d-code\www.web3d.org\x3d\content\examples\X3dForAdvancedModeling/HelloWorldScenes//HelloCostaRica.x3d
> processing with X3dToTurtle stylesheet...
> C:\x3d-code\www.web3d.org\x3d\content\examples\X3dForAdvancedModeling/HelloWorldScenes//HelloCostaRica.ttl
> self-validation test:
> Copying 1 file to C:\x3d-code\www.web3d.org
> \x3d\content\examples\X3dForAdvancedModeling\HelloWorldScenes
> C:\languages\java\apache-jena-3.12.0\bat\arq.bat --data C:\x3d-code\
> www.web3d.org\semantics/ontologies/X3dOntology4.0.ttl --query C:\x3d-code\
> www.web3d.org\semantics/queries/X3dHelloWorldQuery_03.rq --graph
> HelloWorldScenes//HelloCostaRica.ttl
> ----------------------------------------------------
> | WorldInfoNode | title |
> ====================================================
> | "WorldInfo_2_1" | "¡Hola Costa Rica: Pura Vida!" |
> ----------------------------------------------------
> X3dToTurtle.xslt conversion of HelloCostaRica.x3d to HelloCostaRica.ttl
> complete.
> ===================================
>
> Pretty simple query, and so a good combined unit test of X3D ontology,
> xslt model conversion into ttl, and SPARQL query.
>
> Hmmm, we should probably add more WorldInfo nodes and titles to the
> archive example models.
>
> Other comments and TODO suggestions?
>
> ------
>
> * /Other details/
>
> X3D meeting minutes excerpt follows, exemplar screenshot again attached.
>
> [x3d-public] X3D minutes 11 OCT 2019: Web3DUX, semantics progress,
> implementations status, mantis issues, texture/material, X3D-Edit
>
> http://web3d.org/pipermail/x3d-public_web3d.org/2019-October/011347.html
>
> > 3. *X3D Semantic Web Working Group*
> >
> > Much progress. Paper accepted to Semantic Web Pro, additional papers
> planned.
> >
> > [3] [x3d-public] Minutes X3D Semantic Web 7 OCT 2019: X3D Ontology
> improvements review, X3dToTurtle.xslt plans
> >
> http://web3d.org/pipermail/x3d-public_web3d.org/2019-October/011324.html
> >
> > Key page reflecting steady progress:
> >
> > X3D Ontology for Semantic Web
> > https://www.web3d.org/x3d/content/semantics/semantics.html
> >
> > Further activity this week:
> >
> > a. /New mailing list/. semantics-public at web3D has been established.
> We'll be moving most working-group traffic to that list. If you'd like to
> listen or join:
> >
> > Semantics-public -- X3D Semantics public discussion
> > http://web3d.org/mailman/listinfo/semantics-public_web3d.org
> >
> > ----
> >
> > b. X3dToTurtle.xslt unit testing on X3D Examples Archives now
> instrumented for full unit testing of 3000+ scenes. (Full uploads in
> morning.) Available at
> >
> >
> https://www.web3d.org/x3d/content/examples/X3dResources.html#Examples
> > Hello World .ttl Turtle source (experimental) with SPARQL query
> > https://www.web3d.org/x3d/content/examples/HelloWorld.ttl
> > https://www.web3d.org/x3d/content/examples/HelloWorld.rq.txt
> >
> > Example screenshot and alternate pattern-match success follows:
> >
> >
> https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorldIndex.html
> >
> https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.ttl
> >
> https://x3dgraphics.com/examples/X3dForWebAuthors/Chapter01TechnicalOverview/HelloWorld.rq.txt
> >
> > ----
> >
> > c. /Reflection/. Discussions on this challenging topic began a year
> ago, and the X3D Semantic Web Working Group began at the beginning of the
> year. Really impressive progress - we are now evaluating the power and
> expressiveness of X3D model queries. Use cases and feedback continue to be
> welcome. More to follow! 8)
> >
> > https://www.web3d.org/working-groups/x3d-semantic-web
> >
> > "The X3D Semantic Web Working Group mission is to publish models to the
> Web using X3D in order to best gain Web interoperability and enable
> intelligent 3D applications, feature-based 3D model querying, and reasoning
> over 3D scenes."
> >
> > Motivating insights:
> >
> > * "The answer to your question is the response to the query." Jim
> Hendler and Dean Allemang
> >
> > * "Trying to use the Semantic Web without SPARQL is like trying to use a
> relational database without SQL." Tim Berners-Lee
>
> =========================
>
> 4. *X3D Ontology Updates*. Key page:
>
> X3D Ontology for Semantic Web
> https://www.web3d.org/x3d/content/semantics/semantics.html
>
> Lot of refinements, the queries are working well. Much more is now
> possible.
>
> https://www.web3d.org/x3d/content/semantics/semantics.html#Queries
>
> The Owldoc produced by Protege is interesting.
>
>
> https://www.web3d.org/x3d/content/semantics/documentation/owldoc/index.html
>
> X3dSemanticWebDevelopmentArchive.zip is now available, collecting current
> assets for easier download and use.
>
>
> https://www.web3d.org/x3d/content/semantics/X3dSemanticWebDevelopmentArchive.zip
>
> More design-pattern information would be helpful describing the current
> rules for the ontology.
>
> =========================
>
> 5. *Potential Future Work*
>
> John Carlson had a number of leading questions about next steps.
> Regarding OSNAP.
>
>
> http://web3d.org/pipermail/x3d-public_web3d.org/2019-October/011349.html
>
> Nicholas joined for Web3DUX call and said that we are getting closer, this
> will soon be possible.
>
> =========================
>
> So, looking forward:
>
> - most email traffic will be on semantics-public at web3d.org
> - meeting minutes and announcements will copied to x3d-public at web3d.org
>
> Wow - what a lot of progress we have made together. Pretty amazing.
>
> All feedback is welcome. 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-public mailing list
> semantics-public at web3d.org
> http://web3d.org/mailman/listinfo/semantics-public_web3d.org
>
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