RE: [xtm-wg] XTM-CMS: FW: Topic associations

["Michel Biezunski" <mb@infoloom.com>]

It's already covered :
- The association type is a topic. When you say "is-married-to",
"is-married-to" is
   not a string, it is the reference to a topic, whose id is
"is-married-to", but could be
   as well "xxx-3u934h" and this topic has among his various names one which
is
   "is-married-to". This takes care of the class issue.
- Now, if you want to say something about an instance of the marriage, e.g.
the one
  between John and Jackie Kennedy, you consider that the association you are
talking about
  is an occurrence of the topic "Marriage of John and Jackie Kennedy", that
might have many
  other occurrences elsewhere, a definition, an identity, etc. This is a
different topic from the
  one of the class of marriage.

The difference is that in the class case, the topic representing the class
is automatically generated
within the topic map, while in the second case it's up to you to decide
whether a particular instance of
an association should be regarded as the occurrence of a given topic. You
might not want to do that
for all your associations. And in fact it would create much noise if all
topic maps would have to automatically generate topics for each instance of
an association.

Michel
==========================================
Michel Biezunski, InfoLoom, Inc.
Tel +33 1 44 59 84 29 Cell +33 6 03 99 25 29
Email: mb@infoloom.com  Web: www.infoloom.com
==========================================

> -----Original Message-----
> From: Dale Hunscher [mailto:dale@supportability.com]
> Sent: October 9, 2000 4:19 PM
> To: xtm-wg@egroups.com
> Subject: RE: [xtm-wg] XTM-CMS: FW: Topic associations
>
>
> I still have a major concern about XTM that I hope is being
> addressed in the
> WG, which has to do with associations being first-class objects.
>
> Consider this example:
>
>   <assoc  scope="st-family" type="is-married-to">
>    <assocrl anchrole="husband">John Fitzgerald Kennedy</assocrl>
>    <assocrl anchrole="wife">Jacqueline Bouvier Kennedy</assocrl>
>   </assoc>
>
> The association type, a topic, has the id is-married-to. As far as I can
> see, "is-married-to" refers to a topic that is about the *class* (the
> generalized type) of this association, which topic might be better named
> "marriage". But what I need is two things I am not yet seeing in the
> discussion, though there are hints they are being discussed elsewhere:
>
> 1. A definition of the association *class* (or template might be a better
> word) such that it has the required anchor roles "husband" and "wife";
> possibly each could allow multiple instances to account for polygamy and
> polyandry.
>
> 2. A way of specifying the topic of the *instance* of an
> association of this
> type; e.g., the marriage of Jack and Jackie above is a topic unto itself,
> independent of either person (as the tabloids of the 60's so vividly, and
> vapidly, demonstrated).
>
> Both of these are very important to our pharmaceutical work, and
> would be in
> the news arena if I am not mistaken (though I haven't played in that game
> since 1999).
>
> Is this sort of thing already covered and I am missing it? Has it been
> discussed and ruled out? Is it under discussion?
>
> Thanks in advance for answering the questions of one in the Peanut Gallery
> over here. (Pluck your magic twanger, Froggy!)
>
>
> > -----Original Message-----
> > From: West, Matthew MR SSI-GREA-UK
> > [mailto:matthew.r.west@is.shell.com]
> > Sent: Monday, October 09, 2000 9:37 AM
> > To: xtm-wg@egroups.com
> > Subject: RE: [xtm-wg] XTM-CMS: FW: Topic associations
> >
> >
> > Dear Ann,
> >
> > You are right. If you are going to do mapping, associations
> > (whatever links
> > thigns together) need to be first class objects, or else you
> > have no way of
> > saying something like:
> >
> > For each link of type X in model A make a link of type Y in
> > model B, or a
> > link of type X in model A is equivalent to a link of type Y
> > in model B.
> >
> > Regards
> >       Matthew
> > ============================================
> > Matthew West
> > Operations & Asset Management
> > Shell Services International
> > H3229, Shell Centre, London, SE1 7NA, UK.
> > Tel: +44 207 934 4490 Fax: 7929
> > Mobile: +44 7796 336538
> > E-mail: Matthew.R.West@is.shell.com
> > http://www.shellservices.com/
> > ============================================
> >
> > > -----Original Message-----
> > > From: Wrightson, Ann [mailto:Ann.Wrightson@sweetandmaxwell.co.uk]
> > > Sent: 09 October 2000 11:04
> > > To: 'xtm-wg@egroups.com'
> > > Subject: [xtm-wg] XTM-CMS: FW: Topic associations
> > > Importance: High
> > >
> > >
> > >
> >
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