[topicmapmail] Subject Identifiers metadata

[Kal Ahmed]

Hi Nikita,

I understand all that - but the question that was raised was how to
reify the topic information item, not the subject. There is a subject
that is "the topic information item created to reify subject X" and if I
want to say that "Kal created the topic information item that reifies
the subject X" I need some way to talk about the topic information item.

I say topic information item here because I might have used an
application to create the topic information item and never created in a
serialized electronic form (e.g. XTM) that I could point to with a
subject locator.

Cheers,

Kal

On Wed, 2004-05-19 at 00:44, Nikita Ogievetsky wrote:
> Kal, 
> 
> I am also in out on this list, but ...
> Topic already reifies a subject.
> So by reifying a topic you are reifying the same subject that the original
> topic had been reifying.
> Thus in the following topics "a" and "c" are reifying the same subject.
> If you want to talk about the <topic> resource itself, use topic "b".
> 
> <topic id="a"/>
> <topic id="c">
>   <subjectIdentity>
>     <subjectIndicatorRef xlink:href="#a"/>
>   </subjectIdentity>
> </topic>
> <topic id="b">
>   <subjectIdentity>
>     <resourceRef xlink:href="#a"/>
>   </subjectIdentity>
> </topic>
> 
> Did oversimplify your problem?
> 
> --Nikita
> 
> ! -----Original Message-----
> ! From: topicmapmail-admin@infoloom.com [mailto:topicmapmail-
> ! admin@infoloom.com] On Behalf Of Kal Ahmed
> ! Sent: Tuesday, May 18, 2004 4:43 AM
> ! To: Lars Marius Garshol
> ! Cc: topicmapmail@infoloom.com
> ! Subject: Re: [topicmapmail] Subject Identifiers metadata
> ! 
> ! On Tue, 2004-05-18 at 11:41, Lars Marius Garshol wrote:
> ! > * Kal Ahmed
> ! > |
> ! > | The note says that you cannot reify a topic. You can, however reify
> ! > | any characteristic of the topic.
> ! >
> ! > I guess I should step in here to clear this up, despite this post
> ! > being quite old by now. Topics and topic characteristics are actually
> ! > in the same boat as regards reification in TMDM, even though this may
> ! > not be immediately obvious.
> ! >
> ! <clarification removed (but read ;-)>
> ! 
> ! > Any thoughts on whether the language in the TMDM should be modified to
> ! > make this clearer?
> ! 
> ! I'm not sure about the TMDM, but I think that the only way to be clearer
> ! is to avoid using the word "topic" by itself but instead talk about "an
> ! XTM topic element", "topic information item" and "subject".
> ! 
> ! IMO, it makes sense to reify an XTM topic element (or an LTM/AsTMa!
> ! construct for topic) - because there is a real resource to point to. It
> ! also makes sense to talk about reifying a subject, because thats what
> ! topics do. The question is (I think) does it make sense to talk about
> ! reifying a topic information item - perhaps that is what the TMDM should
> ! concern itself with. If it does make sense to do that (and there were
> ! some use cases relating to expressing metadata), then there should be
> ! clear guidance as to how that is achieved. If it doesn't make sense or
> ! if it is something that is implementation specific, then we (as a
> ! community) should attempt to develop some best practice regarding this.
> ! 
> ! Cheers,
> ! 
> ! Kal
> ! 
> ! --
> ! Kal Ahmed <kal@techquila.com>
> ! techquila
> ! 
> ! _______________________________________________
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> ! topicmapmail@infoloom.com
> ! http://www.infoloom.com/mailman/listinfo/topicmapmail
> 
-- 
Kal Ahmed <kal@techquila.com>
techquila