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[protege-discussion] Using string equivalency for classes

João Cabrita jommcabrita at
Tue Apr 6 08:29:43 PDT 2010

Hi Thomas,

Sorry for not posting on the owl mailing list, just noticed it now, and
thanks for your reply. I tried to follow your advice, but it seems that when
I use AceView plugin in protégé 4, if I save datatype properties that have
strings, I get an error when opening the ontology again.

Don't know if you have encountered such issues, but before I post anything
else on the OWL list, I will first have to try and read some posts because
perhaps someone had that problem already.

Best Regards,

2010/4/5 Thomas Russ <tar at>

> This really should be on the protege-owl mailing list.
> On Apr 5, 2010, at 4:04 AM, João Cabrita wrote:
>  However, I would like to achieve the same result while using strings. For
>> instance an instance with a certain DatatypeProperty that has the string
>> "finished" would go to a class and another with the value "inProgress" would
>> go to another one.
>> I have written equivalent class expressions to do this, but there are two
>> problems: The first one is that I cannot seem to use the "==" or the correct
>> langPattern equivalency, only a <= sign or similar.
>> The second problem is that even with this <= problem, the reasoner does
>> not place the individuals in the correct places.
> You use the hasValue restriction.
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