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Re: article on URIs, is this material that can be used by the SWEO IG?

From: Pat Hayes <phayes@ihmc.us>
Date: Thu, 31 May 2007 21:48:33 -0700
Message-Id: <p06230910c28553ca67a6@[192.168.1.4]>
To: Leo Sauermann <leo.sauermann@dfki.de>
Cc: John Cowan <cowan@ccil.org>, www-tag@w3.org

>Hi,
>
>I only kick in with some practical input ...
>
>It was Pat Hayes who said at the right time 31.05.2007 09:05 the 
>following words:
>>
>>>Pat Hayes scripsit:
>>>
>>>>  > For example,
>>>  > >http://en.wikipedia.org/wiki/Shakespeare is a subject indicator for
>>>  > >Shakespeare.
>>>>
>>>>  But it also mentions Stratford-on-Avon, Mary Arden, and many other
>>>>  things. Why is it not just as much 'about' them?
>>>
>>>Because I don't so employ it.
>>
>>OK, fair enough. But then it follows that there is nothing 
>>*intrinsic* to that resource that makes it be a subject indicator 
>>for Shakespeare. It is so simply because you say it is. But when I 
>>read that resource, how do I gain access to *your* intention that 
>>it shall be a subject indicator? What readable resource is it that 
>>tells me that http://en.wikipedia.org/wiki/Shakespeare is a subject 
>>indicator for Shakespeare ?
>
>Semantic MediaWiki has done that technically:
>http://ontoworld.org/wiki/Semantic_MediaWiki
>
>You see how the links are done for example here:
>http://ontoworld.org/wiki/Special:ExportRDF/Semantic%2BMediaWiki
><smw:Thing 
>rdf:about="http://ontoworld.org/wiki/Special:URIResolver/Semantic_MediaWiki">
>  <smw:hasArticle rdf:resource="http://ontoworld.org/wiki/Semantic_MediaWiki"/>

No, I'm afraid I don't see. In this example, everything is an 
'information resource': both the Wiki and the article about it. How 
would this work for something (like for example Shakespeare, or for 
that matter my toaster oven) which is not 'on' the Web at all? How 
would Semantic MediaWiki make a URI denote one of those things? By 
the way, nobody has written any definitive Web articles about my 
toaster oven.

>The "concept identifiers" or concept URIs are of this like:
>http://ontoworld.org/wiki/Special:URIResolver/Semantic_MediaWiki

So what this does, apparently, is to do a 303 redirect to a URI 
obtained by removing "/Special:URIResolver" from the concept URI. How 
does that make this concept identifier denote a thing? Where in all 
this is there anything to associate any URI with an actual object? In 
the earlier example, how can MediaWiki establish a connection between 
a URI and Shakespeare? It is not enough to say that the article 
itself identifies the object it is 'about': we have already 
established that that alone is not sufficient to determine the 
denotation. So what does determine it?

>I don't know if they do the 303 thingy, but I think they do

They seem to, as outlined above, at least in this example.

Pat

>, because Max is in the devleopers, and he co-authored our paper in 
>question, so he should know.
>
>kindest regards
>Leo
>
>--
>____________________________________________________
>DI Leo Sauermann       http://www.dfki.de/~sauermann
>Deutsches Forschungszentrum fuer Kuenstliche Intelligenz DFKI GmbH
>Trippstadter Strasse 122
>P.O. Box 2080           Fon:   +49 631 20575-116
>D-67663 Kaiserslautern  Fax:   +49 631 20575-102
>Germany                 Mail:  leo.sauermann@dfki.de
>
>Geschaeftsfuehrung:
>Prof.Dr.Dr.h.c.mult. Wolfgang Wahlster (Vorsitzender)
>Dr. Walter Olthoff
>Vorsitzender des Aufsichtsrats:
>Prof. Dr. h.c. Hans A. Aukes
>Amtsgericht Kaiserslautern, HRB 2313
>____________________________________________________


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Received on Friday, 1 June 2007 04:48:47 UTC

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