- From: Brian McBride <bwm@hplb.hpl.hp.com>
- Date: Wed, 20 Mar 2002 09:02:44 +0000
- To: "Roy T. Fielding" <fielding@apache.org>, "Williams, Stuart" <skw@hplb.hpl.hp.com>
- Cc: "'Jonathan Borden'" <jonathan@openhealth.org>, Paul Grosso <pgrosso@arbortext.com>, www-tag@w3.org, Chris Lilley <chris@w3.org>
At 19:54 19/03/2002 -0800, Roy T. Fielding wrote: [...] A fragment >is a separate identifier -- a user-specifiable indirect identifier that >allows identification of a portion of any representation, within the set >of available representations, of a given resource. May I seek some clarification here. You say that a fragment identifier *allows* identification of ... That "allows" is wee bit wiggly. The question that RDF needs answered is "What does a URI reference, with a fragment identifier, identify." For a set of things to be identifiers, there must be function whose domain is the set of identifiers. In the case of URI references with fragment identifiers, is there such a function and what is its range? It might be helpful to consider a specific example: http://www.w3.org/ identifies a resource. What does http://www.w3.org/# identify? > In other words, it >allows a third party to identify the product of a retrieval action, >or some portion of that product, indirectly via the resource URI. >In general, that is something you want to avoid doing unless there is >no other available means for directly identifying it as a resource >with its own URI. Is it possible to construct an algorithm which will convert an arbitrary URI reference into a URI? I suggest that it is, and thus it is possible to create a URI for whatever is identified by any URI reference. Is that a sufficient condition for whatever is identified by a URI reference to be a resource? Brian
Received on Wednesday, 20 March 2002 04:04:41 UTC