- From: Boris Motik <boris.motik@comlab.ox.ac.uk>
- Date: Tue, 20 Nov 2007 18:45:38 -0000
- To: "'OWL Working Group WG'" <public-owl-wg@w3.org>
Hello, I actually really dislike reification myself; unfortunately, I don't see how to get around these issues in certain cases. The problem is that sometimes you need more than binary associations between objects. For example, consider the problem of annotating a SubClassOf axiom. In RDF, you write <x rdfs:subClassof y>. But you've just used both x and y; there is no place for an annotation. The only solution I see is not to use reification, but to introduce yet separate vocabulary and represent ternary relations more explicitly. I am really open to any suggestions on this point, because I do see the point that reification is ugly. Boris > -----Original Message----- > From: public-owl-wg-request@w3.org [mailto:public-owl-wg-request@w3.org] On Behalf Of OWL Working > Group Issue Tracker > Sent: 20 November 2007 15:01 > To: public-owl-wg@w3.org > Subject: ISSUE-67 (reification): REPORTED: use of reification in mapping rules is unwise > > > > ISSUE-67 (reification): REPORTED: use of reification in mapping rules is unwise > > http://www.w3.org/2007/OWL/tracker/issues/ > > Raised by: Jeremy Carroll > On product: > > > The mapping rules use RDF reification. > > However, RDF reification has very weak semantics, making it difficult to achieve an OWL Full > semantics that works. > > It is unlikely that RDF graph's constructed with such rules mean what is intended. > > > >
Received on Tuesday, 20 November 2007 18:46:41 UTC