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

["Thomas B. Passin" <tpassin@home.com>]

univers immedia wrote -


> 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 ...
>

More to the point would be this:

ass#1: ...
ass#2: ...
ass#3: ass#2 is a variant of ass#1

Now, if associations are topics we can say this.  Of course, as Graham said,
if an association has an id the processor can handle it.  Better is if it also
has a type (as in the original ISO form), then it is easy to know what kind of
topic it is.  As long as the type reference exists (call it a subject if you
like, but here it means "an instance of', like the original ISO definition) ,
we can make assertions like ass#3.

Cheers,

Tom Passin


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