Dear David, (01)
At Peter's request I'm redirecting my response to the Ontolog Forum. (02)
> On 12/15/2010 10:16 AM, Matthew West wrote:
> >
> > MW: Well if OWL was just an abstract syntax for these fragments I doubt
if
> > anyone would be half as excited. What I think causes a collective groan
> > amongst those that have been around for several decades in this space is
the
> > XML implementation on top of RDF. It is like inventing a square wheel
when
> > you have a round one sitting in the corner (SQL) and then layering
something
> > uncomfortably on top of it.
> Hi Matthew,
>
> It's hard to see how a standardized *Web* ontology language could have
> worked over SQL given the vendor lock-in strategy that's such a large
> part of the RDB market. (03)
MW: My understanding is that at least some vendors are providing an RDF over
SQL capability, just that much of the SQL capability is not exposed thus. (04)
> Perhaps it could have been done, but we might
> still be waiting for it to happen. However, at least that complaint is
> based in industrial reality. The XML complaint isn't unless John and
> others also hate UML or expect everyone to use one, and only one, UML
tool. (05)
MW: Well as I think you know, I'm not a great fan of UML either. It is too
complex a diagramming convention to be able to remember what the symbols
mean for occasional users, which means it is of limited value when you are
trying to communicate to non-officianados.
>
> While the diagrams are nice, the normative UML interchange/computational
> format is XMI. Perhaps John and others are unaware of the failure of XMI
> for UML tools? I was shocked myself as I tried moving/processing
> UML/SysML models. At the OMG meeting where the model interchange group
> got started I made the statement that 'XMI is a complete failure in
> industry' and nobody, not even the UML vendors, could disagree. It's
> OMG's dirty little secret I guess. Humorously, a DOD guy banged his hand
> on the table in mock horror and read a prepared statement about DOD's
> requirement for OMG to fix this for UPDM. BTW UPDM testing still hasn't
> started and that meeting was 18 months ago. At least RDF/XML works and
> the W3C has improved the situation for those who dislike XML with
> turtle, etc. in OWL 2. (06)
MW: Yes I think these options to OWL 2 at least give the possibility of a
human readable syntax.
>
> FWIW in our Semantic Web training we specifically talk about users with
> a DL focus vs. those that use software engineering practices to manage
> 'OWL Full', and more with SPIN/SPARQL, and less with RDF(S). So at
> least 600+ potential users have been exposed to the fact that there's
> more than one way to use OWL and related languages. We do what we can ... (07)
MW: It is no surprise to me that you would be doing something so useful. (08)
Regards (09)
Matthew West
Information Junction
Tel: +44 560 302 3685
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matthew.west@xxxxxxxxxxxxxxxxxxxxxxxxx
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>
> Cheers,
> David
>
> --
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> TopQuadrant, Inc.
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>
>
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