[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Ontologies and fuzzy set
> It would be awkward in RDF, as well, since a membership qualified by a > number is inherently a three-part relationship, which you do not > directly have in RDF. You could create a node of type "membership" - > > membership > member dog > degree .9 > > Then you could create a "fuzzy set" resource - maybe "pet" in this > example - that is related to the membership node. An alternative is to turn it around and apply a "certainty factor" to the statement using reification: {dog memberOf pets} certainty .9 But like you say, it's still pretty awkward. > John Sowa has written that it takes three steps to moel the world, not two > > 1) A lattice of theorems (i.e., a purely mathematical structure) > 2) A model, that stands between the world and the lattice. > 3) The world itself. > > In this scheme, the model maps to the lattice of theories in a binary, > true/false manner, while the model maps to the world in a fuzzy way. > Thus, OWL classes would map between theorems and the model. There would > be no need to try to force the model to map to the world in a crisp, > true/false way. > > I don't know if this has been helpful, but at least it is interesting. Yep. Cheers, Danny.
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