Re: nice reference for qualified

Just saying they use the same term and roughly the same approach so it's 
nice to say that we are reflecting community practice.

Paul

Timothy Lebo wrote:
> Thanks, Paul.
>
> We should also note that we are inverting one of the properties used
> to reference the components of the triple that we are reif.... er...
> qualifying.
>
> I'm rather disappointed that they are encouraging the use of blank
> nodes. All they had to do was remove an underscore!
>
> I also like that they named the referencing predicate according to
> the role.
>
>
> In their example: eg:bob a foaf:Person. eg:mary a foaf:Person.
>
> _:bobMaryMarriage a ex:Marriage; ex:partner eg:bob; ex:partner
> eg:mary; ex:date "2009-04-01"^^xsd:date.
>
> the reference to bob can be "inverted":
>
> eg:bob a foaf:Person; ex:married eg:mary; prov:qualified
> :bobMaryMarriage; . :bobMaryMarriage             # proper URI instead
> of bnode! a ex:Marriage; ex:partner eg:mary;      # Reference to :bob
> is removed, because :bob is referring to the Marriage. ex:date
> "2009-04-01"^^xsd:date . eg:mary a foaf:Person.
>
>
>
>
> Although this looks goofy for marriage (which treats partners
> equally), PROV has a bias towards "newer" things as being the
> subjects of the involvements. The Marriage they model makes sense for
> symmetric relations. PROV involvements are directional.
>
>
> -Tim
>
>
>
>
>
> On Feb 23, 2012, at 7:14 AM, Paul Groth wrote:
>
>> Hi All,
>>
>> I think it would be good to link to the linked data patterns
>> book[1] in the documents around the idea of using the qualified
>> pattern.
>>
>> cheers, Paul
>>
>> [1] http://patterns.dataincubator.org/book/qualified-relation.html
>>
>>
>

-- 
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 Thursday, 23 February 2012 14:11:30 UTC