- From: Paul Groth <p.t.groth@vu.nl>
- Date: Mon, 30 Apr 2012 13:31:48 +0200
- To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- Cc: "public-prov-wg@w3.org" <public-prov-wg@w3.org>
My concrete use case would be to put things like confidence values on these links. For example, in one of our systems we "guess" if there is a tracedto and what to put some confidence value on that link. This is one of the reasons I like attributes in the model. We could do this with derivation so it's not a big deal but the nice thing is that traced to is transitive... cheers Paul On Mon, Apr 30, 2012 at 1:26 PM, Luc Moreau <L.Moreau@ecs.soton.ac.uk> wrote: > Hi Paul, > > Do you have a concrete use case, in particular, with attributes? > > Thanks, > Luc > > On 04/30/2012 12:17 PM, Paul Groth wrote: >> I think traced-to is useful to sometime assert especially in the case >> where you want to be very vague about provenance. It's also nice to >> have attributes so that you can associate other sorts of information >> with it. >> >> However, if others think it's nicer to be inference only then I won't >> be stand in the way. >> >> cheers >> Paul >> >> On Mon, Apr 30, 2012 at 1:02 PM, Provenance Working Group Issue >> Tracker<sysbot+tracker@w3.org> wrote: >> >>> PROV-ISSUE-370 (tracedTo-inference-only): Should tracedTo be moved to prov-constraints and be defined as a binary relation that can be inferred [prov-dm] >>> >>> http://www.w3.org/2011/prov/track/issues/370 >>> >>> Raised by: Luc Moreau >>> On product: prov-dm >>> >>> >>> TracedTo was introduced in the data model so as to have a transitive relation over derivations, etc. It can be inferred. In contrast, its definition as an assertion was not very compelling. In the latest version of prov-constraints, it is only defined as something that can be inferred. >>> >>> Really, it looks like a relation that is useful to express queries. >>> >>> So, in the spirit of simplification, should we move it out of prov-dm, and have it defined in prov-constraints only. >>> >>> At the same time, it could be simplified to a binary relation, since we have no way of inferring attributes for this relation. >>> >>> >>> >>> >>> >> >> >> > > -- > Professor Luc Moreau > Electronics and Computer Science tel: +44 23 8059 4487 > University of Southampton fax: +44 23 8059 2865 > Southampton SO17 1BJ email: l.moreau@ecs.soton.ac.uk > United Kingdom http://www.ecs.soton.ac.uk/~lavm > > -- -- Dr. Paul Groth (p.t.groth@vu.nl) http://www.few.vu.nl/~pgroth/ Assistant Professor Knowledge Representation & Reasoning Group Artificial Intelligence Section Department of Computer Science VU University Amsterdam
Received on Monday, 30 April 2012 11:32:17 UTC