- From: Timothy Lebo <lebot@rpi.edu>
- Date: Thu, 23 Feb 2012 09:13:16 -0500
- To: Paul Groth <p.t.groth@vu.nl>
- Cc: "public-prov-wg@w3.org" <public-prov-wg@w3.org>
Just pointing out the differences for the group's consideration. -Tim On Feb 23, 2012, at 9:08 AM, Paul Groth wrote: > 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 14:13:48 UTC