[xtm-wg] RE: topicRef to reference assocs as well as topics

["univers immedia" <universimmedia@wanadoo.fr>]

Graham :

> An assoc is a subclass of topic therefor it should be possible to assign
a
> name to one
> One of the key points we agreed at swindon was the concept of closure and
> how treating assoc as topics helped us achieve this, bringing us closer
to
> harmony with rdf.
> Statements about statements requies that assocs can be the role playing
> topic in an association.
> The syntax fails to capture this essencential aspect of the agreed model.
I
> would sugest we change the text to say that a topicRef resolves to a
topic
> OR association element.

Is not <topicRef> resolving to an <association> element bound to provoke
syntactic collapsus somewhere?
A way I see to resolve it is to attribute to each association, not a name,
but a Subject, through <associationSubject>. But since associations are
Topics, they do have a Subject, don't they ?
And to "associate associations" to make "statements about statements", is
there more to do than associate these subjects?

e.g.

ass # 1 : "Empolis" employs "Graham"  : associationSubject  # employment
ass # 2 : "Graham" has competence in "Topic Maps" : associationSubject  #
competence
ass # 3 : "competence" is a contract term in "employment" : association
subject : # contract term

The third association is the way I feel "statements about statements".
Linking the *particular instances* ass #1 and ass #2 through a *particular
association* seems to me an unuseful overload of the Map,  since "Empolis
employs Graham under contract terms including Graham's competence in Topic
Maps" seems quite well described by the three above associations.
But maybe you think it does not describe it fully ...

Cheers

Bernard



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