[topicmapmail] Fragmented XTM for web metadata, and some ontology?

[Murray Altheim]

Kal Ahmed wrote:
> On Fri, 2003-06-27 at 14:56, Thomas B. Passin wrote:
[...]
>>So I think that we shoul NOT depricate resourceData.  Instead, we should
>>strengthen it so it can specify the type of the literal data it holds.
> 
> Absolutely. Though I go one step further. I don't want a reinvention of
> data typing. I just want to be able to include XML from namespaces other
> than the XTM one inside the resourceData element. Then I can use
> MyFavouriteSchemaLanguage to do not only datatyping but to express other
> constraints on the content. Then all I want after that is the ability in
> TMCL to restrict occurrences of particular types to having resourceData
> content from particular namespaces. Then I would be happy.

Kal,

And if by "namespaces other than XTM" you mean other semantic
namespaces rather than XML Namespaces, IOW, you aren't asking to
embed other XML markup in XTM documents, then I think we're on the
same page. Since we can embed other semantics in XTM (and will be
doing it all the time by establishing PSI sets from those namespaces)
it isn't necessary to muck at the syntactic level. So we can use
XSD datatypes without needing to use the W3C XML namespace for them.

BTW, since we're still in the same thread, there's an interesting
paper by Yannis Tzitzikas called "An Algebraic Approach for Specifying
Compound Terms in Faceted Taxonomies" I think you'd be interested in.
The link from Yannis' publications page has a bad "/" character, but
you can probably figure that out:

    http://www.csi.forth.gr/~tzitzik/publications.htm

(just change "%5C" to "/" in the provided link on his page)

There are others there that are similarly applicable. This is one
I'm taking home this weekend to read...

Murray

......................................................................
Murray Altheim                  <http://kmi.open.ac.uk/people/murray/>
Knowledge Media Institute
The Open University, Milton Keynes, Bucks, MK7 6AA, UK

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