[x3d-public] X3D Semantic Web agenda 14 OCT 2019: paper plans, mailing lists, X3D examples unit testing, X3D Ontology

Sun Oct 13 17:05:19 PDT 2019

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.  (Note this is a national holiday for some people in USA.)

	https://www.web3d.org/member/teleconference-information

Draft agenda follows.

=========================

1. *Conference and paper publication planning*

We'll discuss current work.

=========================

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!  I've only had to do a few minor touchups to handle 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:

* :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"

... and so on.

------

* /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" | "Â¡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 information would be helpful describing the current rules for the ontology.

=========================

Additional items welcome.  Have fun with X3D Semantic Web!

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
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