[topicmapmail] DRAFT: Datatypes for XML Topic Maps

[Jack Park]

This is an important and valuable contribution, Murray. I sincerely hope it 
serves to seed a lively and productive discussion which results in adoption 
of  datatypes in the topic maps universe.

Cheers
Jack

At 04:58 PM 12/12/2002 +0000, Murray Altheim wrote:
>[My apologies if you receive this more than once; I'm posting
>to several topic map related lists.]
>
>I'm pleased to announce a first draft of something that's been
>in the works for over a year (well, put on hold for over a year).
>The ability to constrain or "type" topic characteristics is
>something necessary within the topic map community. Constraints
>on topic map structures may be provided by various forms of
>schema facilities, such as TMCL, but a simple datatyping feature
>is still something sorely missing. There are some examples
>provided in the document.
>
>  "Datatypes for XML Topic Maps (XTM): using XML Schema Datatypes"
>   Murray Altheim, Knowledge Media Institute, The Open University,
>   12 December 2002.
>
>   See:
>
>     http://kmi.open.ac.uk/psi/datatypes.html
>
>   Abstract:
>
>     The W3C Recommendation XML Schema Part 2: Datatypes
>     [XSD] (hereafter called "XSD") provides a specification
>     of datatypes and their facets, and forms the semantic
>     basis of this document, which establishes Published
>     Subject Indicators (PSIs) for each XML Schema datatype
>     and facet. A PSI is a (relatively) stable URL used as
>     a canonical identifier for a subject, particularly
>     within an XML Topic Map [XTM] document, though
>     application of PSIs is not limited to XTM.
>
>I welcome comments or suggestions towards establishing "best
>practices" for use of these PSIs, as well as comments on the
>structures within the provided topic map. I am willing to add
>visualizations of various parts of the topic map if that is
>considered helpful.
>
>Thanks for your consideration of this draft,
>
>Murray
>
>......................................................................
>Murray Altheim                  <http://kmi.open.ac.uk/people/murray/>
>Knowledge Media Institute
>The Open University, Milton Keynes, Bucks, MK7 6AA, UK
>
>            If you're the first person in a new territory,
>            you're likely to get shot at.
>                                                     -- ma

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XML Topic Maps: Creating and Using Topic Maps for the Web.
Addison-Wesley, ISBN 0-201-74960-2.

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