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RE: Meaning of property "url"

From: Michael Hopwood <michael@editeur.org>
Date: Tue, 23 Oct 2012 16:18:16 +0100
To: "Dawson, Laura" <Laura.Dawson@bowker.com>
CC: Ed Summers <ehs@pobox.com>, Cord Wiljes <cwiljes@cit-ec.uni-bielefeld.de>, "public-vocabs@w3.org" <public-vocabs@w3.org>
Message-ID: <F61A8945B05715448AF2221FB60809250734239406@EX27MAIL03.msghub.com>
Thankfully not, ISNI just identifies a "name" rather than a person.

My point (way back when Cord cited it!) was

1.       The URL means the ID is "taken" - specifically by the network location for whatever is there (it could change, hence http://www.doi.org/doi_handbook/3_Resolution.html#3.6)

This is a slightly different point (in as much as a spate of emails has one)...

2.       A URI is not a URL. I may well have several URIs but I have no URL and hope never to...



From: Dawson, Laura [mailto:Laura.Dawson@bowker.com]
Sent: 23 October 2012 16:08
To: Michael Hopwood
Cc: Ed Summers; Cord Wiljes; public-vocabs@w3.org
Subject: Re: Meaning of property "url"

Yeah, I think we just took a turn for the existential. This comes up a lot in ISNI discussions (are we our identifier?). Anyone read "True Names" by Vernor Vinge?

On Oct 23, 2012, at 11:00 AM, Michael Hopwood <michael@editeur.org<mailto:michael@editeur.org>> wrote:

"Any information that can be named... e.g... a person..." There may be some philosophical issues there; is a person "information"?

Sure, an antelope in a zoo may be a document (http://pages.gseis.ucla.edu/faculty/maack/BrietPrePress.htm) but isn't this taking it a little far? ;)

-----Original Message-----
From: ed.summers@gmail.com<mailto:ed.summers@gmail.com> [mailto:ed.summers@gmail.com<http://gmail.com>] On Behalf Of Ed Summers
Sent: 23 October 2012 15:43
To: Cord Wiljes
Cc: public-vocabs@w3.org<mailto:public-vocabs@w3.org>
Subject: Re: Meaning of property "url"

On Mon, Sep 10, 2012 at 7:27 AM, Cord Wiljes <cwiljes@cit-ec.uni-bielefeld.de<mailto:cwiljes@cit-ec.uni-bielefeld.de>> wrote:

Hi Michael,

(schema.org<http://schema.org>'s "url" property) means something very specific:
"this is the Web location of" _____ (where ______ is some network
addressable digital file).

That is what I thought, too. But the I wonder why:

"url" is a property of class "Thing" (instead of just class
"CreativeWork") there is no property "homepage" for class "Person" or
"website" for class "Organization"

The notion of a URI identifying a "file" is terribly antiquated. So many URIs identify resources that have representations (html) assembled on the fly as the result of queries to databases and whatnot. I prefer to think that url being a property of Thing was an intentional move, because the author chose to sidestep the
httpRange-14 issue, and let URLs identify any type of resource, as is the case in Roy Fielding's description of resource:

The key abstraction of information in REST is a resource. Any information that can be named can be a resource: a document or image, a temporal service (e.g. "today's weather in Los Angeles"), a collection of other resources, a non-virtual object (e.g. a person), and so on. [1] """


[1] http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm#sec_5_2_1_1

Laura Dawson
Product Manager, Identifiers
Received on Tuesday, 23 October 2012 15:18:47 UTC

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