- From: Williams, Stuart (HP Labs, Bristol) <skw@hp.com>
- Date: Thu, 27 Sep 2007 17:42:13 +0100
- To: "Dan Connolly" <connolly@w3.org>, "Misha Wolf" <Misha.Wolf@reuters.com>
- Cc: "W3C-TAG" <www-tag@w3.org>, "semantic-web-ig list" <semantic-web-ig.list@reuters.com>
Dan, > Hmm... I think there was a whiteboard discussion and somebody > took a photo, but I don't see it in the in-progress minutes... > http://www.w3.org/2001/tag/2007/09/18-tagmem-minutes.html#item04 I think may be looking for: http://lists.w3.org/Archives/Public/www-archive/2007Sep/0061 Stuart -- Hewlett-Packard Limited registered Office: Cain Road, Bracknell, Berks RG12 1HN Registered No: 690597 England > -----Original Message----- > From: www-tag-request@w3.org [mailto:www-tag-request@w3.org] > On Behalf Of Dan Connolly > Sent: 27 September 2007 16:14 > To: Misha Wolf > Cc: W3C-TAG; semantic-web-ig list > Subject: RE: Which URI should be persistent when redirects are used? > > > On Thu, 2007-09-27 at 15:21 +0100, Misha Wolf wrote: > > OK. The story is ... > > Ah... good to have more context... I think I see what's going > on up to... > > > The IPTC is likely to approve the NewsML-G2 specification at our > > meeting in Prague in mid-October. > > > > We use URIs to denote concepts associated with the News Object (as > > values of Subject, Genre, Creator, Title, Publisher, etc). We want > > these URIs to be invariant and to participate fully in the Semantic > > Web. If a receiving system uses HTTP to access information about a > > concept (such as Jazz, Marcel Marceau, Mona Lisa, Oil, > Reuters), the > > system hosting the taxonomy in question may have multiple > > representations of the taxonomy, eg: > > - RDF/XML > > - IPTC Knowledge Item > > - Web pages in various languages > > > > So let's say that Mona Lisa has the following URIs: > > - the one used in News Objects > > - the one which will deliver the RDF/XML > > - the one which will deliver the Knowledge Item > > - the one which will deliver the Simplified Chinese Web page > > - the one which will deliver the Traditional Chinese Web page > > - the one which will deliver the Japanese Web page > > - the one which will deliver the International English Web page > > - the one which will deliver the US English Web page > > - etc > > > > One could then write a set of assertions along the lines of: > > - URI-Y refers to the Simplified Chinese Web page describing URI-X > > > > And it would be a Good Thing if URI-Y were invariant. > > > > But (it seems to me that) it would be an even Better Thing if URI-X > > were invariant. > > I'm not sure what you mean by "invariant"? > > I suggest you choose a URI like > http://well-established-museum.example/great-works/mona-lisa#it > > for the mona lisa, then > http://well-established-museum.example/mona-lisa > is naturally a document about the mona lisa, and you can use > content negotation in the usual way, by storing files called > mona-lisa.html.en > mona-lisa.html.ja > mona-lisa.rdf > mona-lisa.newsml > > on a suitably configured apache server. > > If you're nervous about the pun between #it referring to a > section of an HTML document or a painting (i.e. the open TAG > issues fragmentInXML-28 and > RDFinXHTML-35) you can give a 303 redirect to the .html > version in response to GET requests to /great-works/mona-lisa > from clients that seem to prefer HTML. > > I'm hopeful that we'll change the MIME spec for text/html to > address this pun before too long, but opinions on the best > way to go vary, even within the TAG. > > p.s. this arrangement of doing a redirect to the HTML version > is something Henry Thompson suggested in discussion of the > XML Schema namespace document. > > Hmm... I think there was a whiteboard discussion and somebody > took a photo, but I don't see it in the in-progress minutes... > http://www.w3.org/2001/tag/2007/09/18-tagmem-minutes.html#item04 > > -- > Dan Connolly, W3C http://www.w3.org/People/Connolly/ > > > >
Received on Thursday, 27 September 2007 16:45:21 UTC