From: itsme213 <its...@ho...> - 2006-06-20 00:09:40
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>>>:Joe :knows _:1. >>>_:1 :who :Frank >>>_:1 :kind "friend" >>>_:1 :since "1992" > > Hmmm, this is pretty weird modeling. Why? Assuming _:1 is just an implicit node in SMW (with no funny existential meaning), I don't see anything wrong with this at all. If we had N-ary relations: At the instanceu level we have a 4-way hyper-link between Joe, Frank, "friend", and "1992". Reduced to binary relations we add _:1 there is a 2-way link between Joe and _:1 and 3 other 2-way links between _:1 and Frank, "friend", and "1992". > Whats an intuitive way of modeling "Joe knows Frank, they are friends > since 1992" in OWL? The same, since we must represent N-ary with binary. It is the same as pattern-1 in http://www.w3.org/TR/2004/WD-swbp-n-aryRelations-20040721/ No? |