An ebXML registry can be extended using existing mechanisms to support
resolving the types of navigation described by Leo. It does not however have
these semantics in its core representation, which is what Duane refers to as
"agnostic to the registry objects themselves". (01)
This extension would be a valuable exercise for making the ontology more
generally accessible and useful. I would be interested in working on this
effort. (02)
John (03)
-----Original Message-----
From: Leo Obrst [mailto:lobrst@xxxxxxxxx]
Sent: Wednesday, March 05, 2003 12:53 PM
To: [ontolog-forum]
Cc: duane@xxxxxxxxxxxxx
Subject: Re: [ontolog-forum] Tools for the UBL Ontology Project (04)
Unfortunately, an ontology will not only be a taxonomy or set of taxonomies.
So the question I think still stands: can an ebXML Registry handle a graph
structure, i.e., a network? On the one hand, an ontology can be considered a
collection of assertions (axioms) and be represented as a list. But implicitly
or explicitly, it is a graph with multiple inheritance as opposed to a
taxonomy with single inheritance, which is a tree. (05)
One issue of course is that if you define a property for a class, will an
ebXML registry enable inheritance of that property down the subclass graph? (06)
An ontology is both the vocabulary plus the meaning of that vocabulary in
machine-interpretable form. Really therefore, it is a logical/conceptual model
on steroids. (07)
Now, if the ontology or ontologies are created in another tool (which can
handle the above) and then entered into an ebXML registry, then what services
can we expect from the registry? (08)
Thanks,
Leo (09)
marion.royal@xxxxxxx wrote: (010)
> I forwarded this thread to Duane Nickull, of XML Global because I consider
> him to be an expert on ebXML Reg/Rep. Here is his response and I am
> including him as a courtesy copy should anyone wish to reply/comment.
>
> Duane Nickull wrote:
>
> Yes please:
>
> The ebXML Registry could work as a Terminology servver since it is
> largely agnostic to the Registry Objects themselves. What would have to
> be studied is the classification trees, artifact structure (+ syntax)
> and specialized associations needed to facilitate setting an ebXML
> registry up as a terminology server.
>
> Some of this work has been started based on providing a semantic
> equivalency function between elements of disparate taxonomies by
> relating them to each other within certain contexts. This work involves
> taking the UN/CEFACT Core Components methodologies and deriving an XML
> syntax representation of both CC's and BIE's. Those artifacts are then
> referenced via an ebXML and a uni or bilateral reference is made between
> classes of equivalent objects.
>
> I support an open source project. It may be nice to tie in some of TB
> Lee's work on semantic Web.
>
> Duane
>
> marion.royal@xxxxxxx wrote:
> > Duane
> > Would be happy to tie you into this thread if you would like to respond.
> >
> > --------------------------
> > Marion A. Royal
> > U.S. General Services Administration
> > 202.208.4643 (Office)
> > 202.302.4634 (Mobile)
> >
> > Sent from PDA - Please excuse fat thumbs.
> >
> > ------------------------------------------------------------------------
> >
> > ----- Original Message -----
> > From: ontolog-forum-bounces
> > Sent: 03/04/2003 12:06 PM
> > To: ontolog-forum@xxxxxxxxxxxxxxxx
> > Subject: Re: [ontolog-forum] Proposal for UBL Ontology Project
> >
> >
> > In a message dated 3/3/2003 10:58:11 AM US Mountain Standard Time,
> > farrukh.najmi@xxxxxxx writes:
> >
> >> A good way to do a virtual project is to do an open source project.
> >
> >
> > Fully agree this is the way to go.
> >
> >> I would like to propose that the proposed UBL ontologies be managed
> >> using ebXML Registry as an Ontology Server. There are many interesting
> >> features that an ebXML Registry has to offer as an ontology server. A
> >> partial list includes:
> >
> >
> >
> > This is interesting as I have not thought of the ebXML registry as
> > an Ontology server. For example, I do not believe the RIM supports
> > the formal notion of 'subclassOf" which would be critical. While I
> > believe we could use a custom association with this label, that is
> > weaker than the notion of subclass being built into the RIM. For
> example,
> > a formal notion of subclass would allow the child information object to
> > automatically inherit the attributes of the parent. Please correct me
> > if I am misunderstanding the RIM or its implications.
> >
> > Additionally, I would recommend the Ontology classes be associated
> > with a terminology registry for each concept (in essence equating a
> > class with a concept). Following step 3, in the protege Ontology 101
> > document, we need to enumerate important terms in the Ontology.
> > I am proposing a step beyond enumeration to formal definition with
> > concept, terms and referents. Is the ebXML registry suitable for a
> > terminology
> > registry? Or do people know of others?
> >
> > - Mike
> > -------------------------------
> > Michael C. Daconta
> > Chief Scientist, Advanced Programs Group
> > McDonald Bradley, Inc.
> > www.daconta.net
>
> --
> VP Strategic Relations,
> Technologies Evangelist
> XML Global Technologies
> ****************************
> ebXML software downloads - http://www.xmlglobal.com/prod/
>
> _________________________________________________________________
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--
_____________________________________________
Dr. Leo Obrst The MITRE Corporation
mailto:lobrst@xxxxxxxxx Intelligent Information Management/Exploitation
Voice: 703-883-6770 7515 Colshire Drive, M/S H305
Fax: 703-883-1379 McLean, VA 22102-7508, USA (012)
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