- From: T.V Raman <raman@google.com>
- Date: Fri, 23 Jun 2006 16:06:34 -0700
- To: noah_mendelsohn@us.ibm.com
- Cc: Misha.Wolf@reuters.com, public-rdf-in-xhtml-tf@w3.org, semantic-web@w3.org, www-tag@w3.org
so in that case, i.e. a URI consed up for the pure purpose of a namespace uRI, wouldn't it be better to write urn:foo/bas --- as opposed to using the HTTP scheme? noah_mendelsohn@us.ibm.com writes: > > Misha Wolf writes: > > > 7f whether the IRI mapped to the prefix is required to be > dereferenceable. > > I'm not sure I'd put it this way, as I think it's a matter of degree > rather than "whether". Specifically: > > * I believe that, by definition, any http URI is dereferenceable, in the > sense that it is always appropriate to try a GET, except perhaps if your > intentions are malicious (denial of service, etc.) Thus, for example, > it's always OK for a crawler to attempt a GET or HEAD on an http URI that > it stumbles upon or cobbles up. > > * The TAG has stated that it's always good practice for the authority to > cause representations to be available. Now, here's where I think it's a > matter of degree. I can imagine circumstances in which, notwithstanding > the TAG's general advice, one would go the other way. If, for example, a > namespace were minted deep in the heart of some system, for uses really > internal to that system, and from context we knew that it would be used > for one or two documents of short lifetime and never again, well maybe > then it's not worth the deployment cost of responding to GET requests. > Still, it's a good thing at least in principle, so that if the crawler > comes along, it gets a reasonable description. > > So, I think the IRI mapped to the prefix is by definition dereferenceable > (if in the http scheme) in the sense that you can always try, and that > resource authorities SHOULD in most cases offer a representation. There > is some wiggle room between that SHOULD and a MUST. > > -------------------------------------- > Noah Mendelsohn > IBM Corporation > One Rogers Street > Cambridge, MA 02142 > 1-617-693-4036 > -------------------------------------- > > > > -- -- T. V. Raman
Received on Friday, 23 June 2006 23:06:52 UTC