dlquery

In OWL this query works fine "person and hasChild min 3" it works fine and it gives me all persons who have more than 3 children but this one does not work "person and hasChild max 3" it should give me all persons who have less than 3 children however it does not work does any one have an idea about this?? why "min" works while "max" does not give any results!?? Thanks The reason why the 2nd query "does not work" is Open World Assumption , and possibly also (the lack of) Unique Name Assumption . Say you state: John lives in Paris. Mary lives in Paris. The following questions are answered in

I'm using Protege v4.3 for making ontologies. I have a question about OWL ontology and DL query. For instance, in the Pizza ontology, http://owl.cs.manchester.ac.uk/co-ode-files/ontologies/pizza.owl I can execute the DL query hasTopping some CheeseTopping The result is American, AmericanHot, Cajun,.. etc. That's OK. Now, i tried DL query isToppingOf some American But the result is nothing. Because the property isToppingOf is inverse property of hasTopping, I expected to get the result including FourCheesesTopping, CheeseyVegetableTopping, etc. from that query(by inference). Bud it didn't. Is