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Re: a URI is a name (tel uri scheme and VCARD RDF)

From: Richard H. McCullough <rhm@cdepot.net>
Date: Sun, 24 Nov 2002 11:58:07 -0800
Message-ID: <001301c293f3$cf4a8a60$bd7ba8c0@rhm8200>
To: <seth@robustai.net>
Cc: "Doug Ransom" <doug.ransom@alumni.uvic.ca>, <www-rdf-interest@w3.org>
I have a problem with calling Linus Torvalds an "abstract thing".
I would say that Linus Torvalds, the Torvalds document and the Torvalds graph are all individuals -- concrete physical things.

Abstract things include the Class Person, and the Class of sets, for example.
We can have individual sets, e.g., the set of persons which contains Linus and Seth.  I would say that this individual set is an "abstract thing" because it is a "mental container" not a "physical container".
============ 
Dick McCullough 
knowledge := man do identify od existent done
knowledge haspart list of proposition

  ----- Original Message ----- 
  From: Seth Russell 
  To: Richard H. McCullough 
  Cc: Doug Ransom ; www-rdf-interest@w3.org 
  Sent: Sunday, November 24, 2002 10:53 AM
  Subject: Re: a URI is a name (tel uri scheme and VCARD RDF)


  Richard H. McCullough wrote:

    I followed the link at the bottom of this email, and read Sean B. Palmer's interesting essay on URIs.  It's the first time I have ever bothered to read anything about URIs.  In one sense, that has been a great advantage -- I haven't been distracted by the details of how URIs are structured, or the ongoing discussions of whether a URI points to a document, or a graph, etc.

    So, I can sit back, with a somewhat detached perspective, and observe that a URI is simply a name for something, and the meaning of a URI is the something that the name refers to.

    For example, if we want to talk about Linus Torvalds in the context of URIs & RDFS, we might have three different somethings that we need three different names for:

        Linus Torvalds the person
        a document that contains RDFS statements that describe facts about Linus Torvalds
        a graph that contains nodes and links that describe facts about Linus Torvalds

    My impression, based on a few RDF-interest emails, is that much confusion has been generated by trying to use one URI when three URIs are required.  It may be possible to adopt some conventions to allow one URI to be simply mapped to three URIs.
    But the fact remains -- three URIs are required.
  Yep, I agree - three things are beind identified and three URI are required:. 

  Linus Torvalda the person
    http://foo/#LinusTorvalds
  a documdent that contains RDFS statements that describe facts about Linus Torvalds
    http://foo/
  a graph that contains nodes and links that describe facts about Linus Torvalds
    http://foo/#ThisGraph

  Note that the abstract things are identified by UriRef(s) with fragments and the tangeable document is identified by a URI.  

  Seth Russell
Received on Sunday, 24 November 2002 14:58:09 GMT

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