- From: Dan Brickley <danbri@w3.org>
- Date: Thu, 6 Jun 2002 08:02:13 -0400 (EDT)
- To: <www-webont-wg@w3.org>
Re motivating daml:UnambiguousProperty, here are some public but offlist notes I made a little while ago, and which Libby just mentioned. Dan ---------- Forwarded message ---------- Date: Thu, 30 May 2002 09:34:19 -0400 (EDT) From: Dan Brickley <danbri@w3.org> To: Jim Hendler <hendler@cs.umd.edu> Cc: connolly@w3.org, massimo@w3.org, www-archive@w3.org, libby.miller@bris.ac.uk, Guus Schreiber <schreiber@swi.psy.uva.nl> Subject: Re: Issue 3.4 - daml:UnambiguousProperty Resent-Date: Thu, 30 May 2002 09:35:05 -0400 (EDT) Resent-From: www-archive@w3.org Oops, Guus and Libby's addresses were missing from CC list; resending. imho UnambiguousProperty is the most important thing for WebOnt to get riht, and since there are some subtleties (eg. unambiguity of a property over time) is is important for WebOnt to write down the reason it has this construct. Below is a draft that might be useful for this. cheers, Dan On Thu, 30 May 2002, Dan Brickley wrote: > > > On Wed, 29 May 2002, Jim Hendler wrote: > > > > > Issue 3.4 - daml:UnambiguousProperty > > > > Proposal - CLOSE THIS ISSUE > > > > The issue here was that the requirements document didn't motivate > > this language feature. However, no one has advocated its removal and > > there does seem to be consensus it is a desirable feature. It is > > provided for in DAML+OIL and will be provided in OWL. > > Sounds good. > > For completeness, I'll try to motivate the issue: > > Many, perhaps all of the Web Ontology requirements are based around needs > associated with the interchange of resource descriptions in the World Wide > Web. The parties that produce and consume these descriptions will be > loosly co-ordinated. As such, conventions are needed that make it > possible for these parties to be clear _which_ resources are being > described. The Web architecture provides for the use of URI syntax for > naming resources in the Web. In addition, the use of 'uniquely identifying > properties' (aka 'unambiguous properties') provides an additional > mechanism for describing resources which, for example, do not have widely > agreed URI-syntax names. The formal semantics of UnambiguousProperty allow > loosly coordinated parties to draw inferences about the identity of > resources being described in Web data that uses these unambiguous > properties. This complements the URI technology by allowing resources to > be identified indirectly, by description. "The company whose homepage > is...; the person whose telephone number is...; the image whose sha1sum > is...". > > > Offlist for now. If useful, do what you will with this text. I don't want > to slow down the issue closure. I've copied www-archive anyway, so this is > hyperlinkable. > > hth, > > Dan > > >
Received on Thursday, 6 June 2002 08:02:13 UTC