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[protege-discussion] An interesting pizza... or max and exactly cardinality not working?

Thomas Russ tar at ISI.EDU
Tue Sep 8 12:49:46 PDT 2009


On Sep 8, 2009, at 12:44 PM, Thomas Russ wrote:

>
> On Sep 7, 2009, at 1:58 AM, maarten wrote:
>
>>
>> Hi all,
>>
>> Studying the pizza.owl, I didn't get cardinalities max or exactly  
>> to work the way I expected.
>>
>> An interesting pizza has the following equivalent class: Pizza and  
>> hasTopping min 3 Thing
>>
>> When I change this (or create a similar pizza) with 'max' or  
>> 'exactly' instead of 'min', I don't get the expected result (e.g.  
>> all pizzas with 3 or less toppings, or exactly 3 toppings).
>>
>> I'm quite new to owl modeling and protege 4, so I'm probably  
>> missing something.
>
> Open world semantics.
>
> If you search on the protege-owl mailing list archives, this comes  
> up quite frequently.
>
> For example:
>
>  http://thread.gmane.org/gmane.comp.misc.ontology.protege.owl/25589/focus=25624
>  http://thread.gmane.org/gmane.comp.misc.ontology.protege.owl/18189/focus=18213
>  http://thread.gmane.org/gmane.comp.misc.ontology.protege.owl/23735/focus=23745

And also the thread title "Can't classify the OWL class properly,  
Why?" in this list.




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