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Re: PROV-ISSUE-142 (Tlebo): Can roles only be Literals? [Data Model]

From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
Date: Sun, 06 Nov 2011 17:37:10 +0000
Message-ID: <EMEW3|ac264a24db11c999f127efe9854fec01nA5HbF08L.Moreau|ecs.soton.ac.uk|4EB6C5C6.6010407@ecs.soton.ac.uk>
To: Stephan Zednik <zednis@rpi.edu>
CC: "'Jim McCusker'" <mccusj@rpi.edu>, "'Provenance Working Group WG'" <public-prov-wg@w3.org>
Hi Stephan,

The key thing for me is that it's not an identifier, as explained before.

It seemed that reusing 'typed literal' would be a good option. I am open
to any other suggestion.

Luc

On 06/11/11 17:22, Stephan Zednik wrote:
> Does this imply that all qualifiers must be typed literals?
>
> --Stephan
>
> -----Original Message-----
> From: Luc Moreau [mailto:L.Moreau@ecs.soton.ac.uk]
> Sent: Sunday, November 06, 2011 10:00 AM
> To: Jim McCusker
> Cc: Provenance Working Group WG
> Subject: Re: PROV-ISSUE-142 (Tlebo): Can roles only be Literals? [Data
> Model]
>
> Hi Jim,
>
> It is intentionally that we use typed literals here, and not identifiers.
>
> If we allow identifiers, then in effect we would have introduced a new
> relation;  it would be better defined as prov-dm relation, rather than
> hidden in a qualifier.
>
> What's wrong with "the role of president"  here?
>
> Luc
>
> On 06/11/11 15:19, Jim McCusker wrote:
>    
>> 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>
>>      
> 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>   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>
>>>>          
> 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>   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 | (203) 785-6330
>>>> http://krauthammerlab.med.yale.edu
>>>>
>>>> PhD Student
>>>> Tetherless World Constellation
>>>> Rensselaer Polytechnic Institute
>>>> mccusj@cs.rpi.edu
>>>> http://tw.rpi.edu
>>>>
>>>>          
>>>
>>>        
>>
>>
>>      
>
>
>    
Received on Sunday, 6 November 2011 17:37:51 UTC

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