- From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- Date: Sun, 6 Nov 2011 20:14:10 +0000
- To: Paul Groth <p.t.groth@vu.nl>
- CC: Stephan Zednik <zednis@rpi.edu>, Provenance Working Group WG <public-prov-wg@w3.org>
Hi Paul, Yes, agreed it's worth a clarification. Professor Luc Moreau Electronics and Computer Science University of Southampton Southampton SO17 1BJ United Kingdom On 6 Nov 2011, at 19:05, "Paul Groth" <p.t.groth@vu.nl> wrote: > Hi Luc > > This is where the confusion is. Literals in RDF-speak are not URIs. Maybe a note in either prov-o or prov-dm would help clarify this. > > Cheers > Paul > > > > On Nov 6, 2011, at 19:56, Luc Moreau <L.Moreau@ecs.soton.ac.uk> wrote: > >> Hi Stephan, >> Why can't you do it with the typed literals of prov-dm? I don't understand >> The objction. Urls are one of the permitted types. You can use This to refer to any >> Of your classes. >> >> Professor Luc Moreau >> Electronics and Computer Science >> University of Southampton >> Southampton SO17 1BJ >> United Kingdom >> >> On 6 Nov 2011, at 18:45, "Stephan Zednik" <zednis@rpi.edu<mailto:zednis@rpi.edu>> wrote: >> >> Hi all, >> >> Comment below. >> >> From: Luc Moreau [mailto:L.Moreau@ecs.soton.ac.uk] >> Sent: Sunday, November 06, 2011 10:02 AM >> To: Daniel Garijo >> Cc: Jim McCusker; Provenance Working Group WG >> Subject: Re: PROV-ISSUE-142 (Tlebo): Can roles only be Literals? [Data Model] >> >> Hi Daniel, >> That's seems fine modelling and prov-dm supports it. >> Luc >> >> On 06/11/11 16:14, Daniel Garijo wrote: >> Hi Jim, >> what was rejected is Roles being subclasses of Entities. >> Roles can still be classes... >> The statement that qualifiers must be typed literals seems to contradict the statement that roles can still be classes. >> What’s even more important to me, it seems we are implying that all qualifiers should be typed literals. Qualifiers are designated an extension point in the prov-DM, but we are now limiting these extensions to being just Literals. >> I presume the idea of ‘extension’ is that there would be a prov:qualifer DataTypeProperty in prov-o and users would be encouraged to define domain-specific sub-properties? If a user wishes to define a domain-specific objectProperty for use in Usage or Generation, etc., then this would not be an extension of a qualifier? >> Is time information on Usage, Generation, etc. a defined specialization of qualifier? Are we happy with limiting our time statements to Literals? >> --Stephan >> >> In your example, I would make "presidentRole" and instance >> of class Role and then link it to the entity "Barack Obama". >> >> Best, >> Daniel >> 2011/11/6 Jim McCusker <mccusj@rpi.edu<mailto:mccusj@rpi.edu>> >> Make Roles resources like Entities. Classes of Roles (Creator, >> Publisher, PrincipleInvestigator) are instantiated for each Entity. Of >> course, this is rather similar to what's been rejected (?), but is >> still the best choice, IMO. This would be, for instance, "Barack >> Obama's role as president", as opposed to "the role of president", >> which would be a class. >> >> Role could also be an extension of skos:Concept and allow you to >> express "the role of president" directly without custom instantiation. >> >> Jim >> >> On Sun, Nov 6, 2011 at 8:38 AM, Luc Moreau <L.Moreau@ecs.soton.ac.uk<mailto:L.Moreau@ecs.soton.ac.uk>> wrote: >>> Ok, so, what's alternative suggestion ? >>> >>> Professor Luc Moreau >>> Electronics and Computer Science >>> University of Southampton >>> Southampton SO17 1BJ >>> United Kingdom >>> >>> >>> On 6 Nov 2011, at 12:59, "Jim McCusker" <mccusj@rpi.edu<mailto:mccusj@rpi.edu>> wrote: >>> >>>> This is a misunderstanding of a URI literal versus URI resource. When >>>> a URI resource is used, it can link to that resource when it has >>>> assertions made about it. This is not possible or intended with URI >>>> literals. >>>> >>>> Jim >>>> >>>> On Sun, Nov 6, 2011 at 2:36 AM, Luc Moreau <L.Moreau@ecs.soton.ac.uk<mailto:L.Moreau@ecs.soton.ac.uk>> wrote: >>>>> Hi Tim, >>>>> >>>>> But doesn't this include URIs by means of typed literals? >>>>> >>>>> Professor Luc Moreau >>>>> Electronics and Computer Science >>>>> University of Southampton >>>>> Southampton SO17 1BJ >>>>> United Kingdom >>>>> >>>>> On 6 Nov 2011, at 01:20, "Provenance Working Group Issue Tracker" <sysbot+tracker@w3.org<mailto:sysbot%2Btracker@w3.org>> wrote: >>>>> >>>>>> >>>>>> PROV-ISSUE-142 (Tlebo): Can roles only be Literals? [Data Model] >>>>>> >>>>>> http://www.w3.org/2011/prov/track/issues/142 >>>>>> >>>>>> Raised by: Timothy Lebo >>>>>> On product: Data Model >>>>>> >>>>>> prov-dm, 5.5.1 Qualifier: >>>>>> >>>>>> "The value associated with a role attribute must be conformant with Literal." >>>>>> >>>>>> >>>>>> >>>>>> Will this prevent PROV-O from using URIs to cite roles? >>>>>> >>>>>> Restricting roles to literals will be severely limiting for PROV-O and semantic web applications, since literals cannot be described or served as linked data, and thus consumers will be unable to determine more information about what the role means. >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> -- >>>> Jim McCusker >>>> Programmer Analyst >>>> Krauthammer Lab, Pathology Informatics >>>> Yale School of Medicine >>>> james.mccusker@yale.edu<mailto:james.mccusker@yale.edu> | (203) 785-6330<tel:%28203%29%20785-6330> >>>> http://krauthammerlab.med.yale.edu >>>> >>>> PhD Student >>>> Tetherless World Constellation >>>> Rensselaer Polytechnic Institute >>>> mccusj@cs.rpi.edu<mailto:mccusj@cs.rpi.edu> >>>> http://tw.rpi.edu >>> >>> >> >> >> >> -- >> Jim McCusker >> Programmer Analyst >> Krauthammer Lab, Pathology Informatics >> Yale School of Medicine >> james.mccusker@yale.edu<mailto:james.mccusker@yale.edu> | (203) 785-6330<tel:%28203%29%20785-6330> >> http://krauthammerlab.med.yale.edu >> >> PhD Student >> Tetherless World Constellation >> Rensselaer Polytechnic Institute >> mccusj@cs.rpi.edu<mailto:mccusj@cs.rpi.edu> >> http://tw.rpi.edu >> >>
Received on Sunday, 6 November 2011 20:15:12 UTC