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RE: rdfms-resource-semantics

From: <Patrick.Stickler@nokia.com>
Date: Sun, 10 Jun 2001 22:46:51 +0300
Message-ID: <6D1A8E7871B9D211B3B00008C7490AA50795876C@treis03nok>
To: tshipley@symbio-tech.com, Patrick.Stickler@nokia.com, lee.jonas@cakehouse.co.uk, decoy@iki.fi
Cc: www-rdf-interest@w3.org


> -----Original Message-----
> From: ext Trent Shipley [mailto:tshipley@symbio-tech.com]
> Sent: 10 June, 2001 04:56
> To: Patrick.Stickler@nokia.com; lee.jonas@cakehouse.co.uk; 
> decoy@iki.fi
> Cc: www-rdf-interest@w3.org
> Subject: RE: rdfms-resource-semantics
> 
> 
> Patrick,
> 
> Without regard to the actual specifications for the various 
> UR*s, are you
> arguing that they *ought* to be used something like this:
> 
> --Pointers--
> 
> ----Implicit pointers
> 
> (Implicit pointers can be de-referenced, and [in theory] the referent
> retrieved.)
> 
> ------Automated pointers
> (The referent of an automated pointer can be retrieved by an 
> automata.)
> 
> Examples of automated pointers.
> 
> char * p.   de-reference using *p
> 
> http://www.foo.bar/index.html.
> 
> 
> By analogy a URL *should* indicate an automated pointer.  
> (With the proviso,
> that like any pointer it might in fact be dangling or void when
> de-referenced.)
> 
> 
> ------an-automated pointers
> 
> (A non-automated pointer is not guaranteed to be retrievable 
> by an automata,
> but by definition pointer _itself_ will--in principle--tell you how to
> locate the referent.)
> 
> Examples:
> 
> You wisely held put derivative on the NASDAQ index in October 2000 and
> decided to let it come due.  The entity referenced (a 
> quantity of US e-$s)
> appeared automatically in your brokerage account when the 
> contract came due,
> successfully hedging investments in technology stocks.
> 
> You held futures in barley due in January 2001.  Since you 
> were going to
> open a brewery you decided to take delivery on the contract.  
> Your contract
> partner faxed your broker that your five metric tons of wheat 
> were sitting
> in the harbor at Rotterdam.  How you got it to New York was your @#$%
> business.
> 
> 
> In principle all URI's should be treated as an-automated 
> implicit pointers.
> 
> ----Logical pointers
> 
> (Logical pointers, unlike implicit pointers cannot be 
> de-referenced without
> explicit access to the translation table.)
> 
> Examples:
> 
> The literal "stupid"  you have to know that this must be 
> de-referenced using
> 
> #! perl
> my %stupid_hash{"stupid"};
> 
> Or
> 
> The RDF entry in a web page refers to the Library of Congress subject
> category "G".
> You have to have treat "G" as a logical reference and know 
> that you will
> look it up in the LC-Guide-To-WWW-Subject-Codes.  There you 
> will see it
> codes for "anthropology, general".
> 
> 
> In principle all URN's should be treated as logical pointers.
> 
> 
> ---
> 
> RDF pointers are mostly names referring to internal 
> categories; therefore
> (in the main), RDF pointers should be URNs.
> 
> ---------------
> 
> Is this a reasonable representation of your position?

Insofar as I fully and acurately understood it, yes, I believe it
is. (should I now duck?)  ;-)

Patrick

--
Patrick Stickler                      Phone:  +358 3 356 0209
Senior Research Scientist             Mobile: +358 50 483 9453
Software Technology Laboratory        Fax:    +358 7180 35409
Nokia Research Center                 Video:  +358 3 356 0209 / 4227
Visiokatu 1, 33720 Tampere, Finland   Email:  patrick.stickler@nokia.com
 
Received on Sunday, 10 June 2001 15:47:02 GMT

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