[semantics-public] X3D Semantic Web minutes 21 OCT 2019: rdf:List for listing children nodes?

Brutzman, Donald (Don) (CIV) brutzman at nps.edu
Mon Oct 21 10:23:02 PDT 2019

Seems like a simple rdf:List might work?

	5.2.1 rdf:List
	rdf:List is an instance of rdfs:Class that can be used to build descriptions of lists and other list-like structures.

We should be careful here, a little more may be needed... since SFNode and MFNode field types are not defined yet in X3D Ontology, this will be good to sort out.


# SFNode TODO questionable, remove or refactor? .
# MFNode TODO questionable, remove or refactor? .

On 10/21/2019 10:11 AM, Brutzman, Donald (Don) (CIV) wrote:
> This should be an rdf relationship of some sort...  hmmm.  Specified multiple times, it would look like:
> :Group_2_2 a owl:NamedIndividual, x3do:Group ;
>      x3do:hasParent :Scene ;
>      x3do:hasChildren :ViewUpClose ;
>      x3do:hasChildren :Transform_2_2_2 ;
>      x3do:hasChildren :Transform_2_2_3 .
> TODO: Jakub will figure out if an even better relationship is possible, instead of the repeated properties above.  An ordered list of some type is preferable because the order of children nodes can be important... For example, both Switch and LOD have order-dependent children for their functionality to work properly.
> This is an RDF question... as partial answer, it looks like there is an RDF construct to apply. Jakub found:
> 	OWL Web Ontology Language Reference
> 	6.2 Enumerated datatype
> 	https://www.w3.org/TR/owl-ref/#EnumeratedDatatype
> Whoa, the construct there looks pretty gnarly... hopefully we can find a corresponding .ttl representation that is simpler... whatever works.  Still a TODO item.

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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