Dear all,

Once in a while we ask ourselves: what is the best way to model numerical 
constraints.
In the past we used SPIN/SPARQL constraints but can't we do it more 
rdf/rdfs/owl-based?
Like simple example: SmallCar being subclass of Car with length property where 
SmallCar has length < 2 ('meter' acc. to nasa ont.)

(Or subclasses for "requiredItems" as subclasses limiting the solution space in 
case of configuration processes).

Kind of hasValue but then more flexible "hasLessThanValue etc.

Guess all this is OWA-related like the examples in:
http://answers.semanticweb.com/questions/1476/expressing-constraints-using-rdfowl-or-something-else

Any input very welcome, Michel



Dr. ir. H.M. (Michel) Böhms
Sr. Research Scientist
Technical Sciences

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