[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: URIs are simply names was: Re: "Abstract"URIs
On 2002-02-13 16:03, "ext Eric van der Vlist" <vdv@d...> wrote: > Patrick Stickler wrote: >> On 2002-02-13 15:31, "ext Eric van der Vlist" <vdv@d...> wrote: >> >> >> >>> PS: of course, if http://example.org/my-namespace.xml is a RDDL >>> document, http://example.org/my-namespace.xml#foo might contain a >>> documentation of what it really means... >>> > > This was a PS and almost a joke :) ! Well, I couldn't be sure, and I see so many "Just use RDDL" comments thinking that RDDL (however useful and great) is some kind of panacea for the web which will make all relations between resources clear... and that's getting to be a bit old. > the main goal of my mail being to > draw the attention on the lack of coherence between URIs as seen by > XPointer, RDF and W3C XML Schema. Fair enough. And apologies for replying only to your PS and not making comment to the body of your message. > ... when a resolvable URI is used I think that a RDDL > document is the most sensible thing to host there. Why? As I pointed out, a shared namespace does not equate to shared semantics or shared description by all URIs grounded in that namespace. It's an issue of consistency and also of what is really being described. Since a namespace != doctype, != vocabulary, etc. etc. we have to stop thinking that they are. If we need URIs for doctypes, let's use them. If we need URIs for vocabularies, let's use them. But a namespace is just punctuation. What we need is a global metadata registry (or registries) that provides access to knowledge by arbitrary URI, which is expressed in standardized ontologies with consistent semantics -- ideally expressed in RDF. I.e. the ability to ask "What is this URI?" and be told e.g. that it is an instance of a particular URI scheme which itself is a member of a particular URI class which has specific semantics (e.g. is non-dereferencable and denotes abstract concepts) and that it constitutes a term in a specific vocabulary and that vocabulary is used by four particular doctypes and the term has various descriptions and relations to other terms, etc. etc. You know, something like a Semantic Web... ;-) (and, BTW, that's the practical, real-world, non-AI, no pie-in-the-sky vision of the Semantic Web ;-) Is that as easy as hooking RDDL to namespace URLs? Heck no. Is it doable? Sure. Should we get on with it? Absolutely. Cheers, Patrick -- Patrick Stickler Phone: +358 50 483 9453 Senior Research Scientist Fax: +358 7180 35409 Nokia Research Center Email: patrick.stickler@n...
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