[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: Assumptions about URIs

bookx download

>Bent Rasmussen scripsit:
> > - "Does the URI 'http://www.w3.org' identify an
> >   organisation called W3C or a location on the Web?"
>For informal purposes, it can refer to either, just as informally
>I can be called either "John Cowan" or "mailto:cowan@c...";.

Alright, so let's move to formal:

>For RDF/TM purposes, when it is necessary to make rigorous
>distinctions, then there are two possible answers:
>- A URI means what the owner of the authority-part (DNS name) says it
>   means.  On this basis, "John Cowan" is a non-URI name of *me*,
>   whereas "mailto:cowan@c..."; is a URI name of *one of my
>   mailboxes*.

So you're saying that the owner of "ccil.org" gets to choose what


is? It could be a solar system if they preferred, because they're the 
authority -- regardless of what mailto is intended for! In other words: 
intent is irrelevant because it is has no substance in the knowledge 
representation system; although it might have, i.e. there are statements 
about what the type of resources identified in the TEL scheme is.

>- The meaning of a URI must be inferred from the statements made
>   about it.  In this case we would have to look to what has been said.

Alright, so we can use rdf:type to indicate the type but then what about the 
context, the name space, should we get "used" to things like

    <http://example.com/bookx> <http://example.com/publisher> <tel:2...>
    <tel:2> rdf:type ex:Person

and just say that name spaces and their intended range is irrelevant? It may 
work but still seems a bit nicer to align the inferred meaning of a resource 
with the meaning allowed by the name space. But perhaps that's just extra 
work that nobody needs.

>John Cowan           http://www.ccil.org/~cowan              cowan@c...
>To say that Bilbo's breath was taken away is no description at all.  There
>are no words left to express his staggerment, since Men changed the 
>that they learned of elves in the days when all the world was wonderful.
>         --_The Hobbit_

Join the worldÂ’s largest e-mail service with MSN Hotmail. 


Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!

Buy Stylus Studio Now

Download The World's Best XML IDE!

Accelerate XML development with our award-winning XML IDE - Download a free trial today!

Don't miss another message! Subscribe to this list today.
First Name
Last Name
Subscribe in XML format
RSS 2.0
Atom 0.3

Stylus Studio has published XML-DEV in RSS and ATOM formats, enabling users to easily subcribe to the list from their preferred news reader application.

Stylus Studio Sponsored Links are added links designed to provide related and additional information to the visitors of this website. they were not included by the author in the initial post. To view the content without the Sponsor Links please click here.

Site Map | Privacy Policy | Terms of Use | Trademarks
Free Stylus Studio XML Training:
W3C Member
Stylus Studio® and DataDirect XQuery ™are products from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2013 All Rights Reserved.