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[p4-feedback] open and close world assumption

Ben salem Wided zayd.bensalem at
Sat Nov 30 13:30:50 PST 2013

Thank you for your reply,

Yes it work when I used the differentfrom relation between instances!
But  I would like also to detect inconsistency when v1 have no vintage
year. In other words, I would detect or prevent that a vintage is added to
the KB without the vintage year information.
It is not real with Open Word Assumption but I would know is there a manner
to enforce this in OWL?


2013/11/30 Dave McComb <dave.mccomb at>

> Make sure the two vintage years are different ( use the differentfrom
> relation between them) this should be sufficient to infer that v1 is not a
> vintageClass ( create the complement of vintageClass to convince yourself
> that it's working)
> Sent from my iPhone
> On Nov 30, 2013, at 6:14 AM, "Ben salem Wided" <zayd.bensalem at>
> wrote:
> Hi,
> I would like to enforce property restrictions in class instances.
> For example in the ontology “wine.owl”, the instances of Vintage class
> have exactly one “hasVintageYear” relationship to class Thing : Vintage Í =1
> hasVintageYear.Thing.
> I create an instance v1 of Vintage class and I linked it to two instances
> (i1 and i2) via hasVintageYear property.
> I know that reasoners uses open-world assumption so they will deduce that
> i1 is same as i2, but is there any way to use close-word assumption and to
> detect inconsistency if v1 don’t have exactly one“hasVintageYear”
> relationship?
> Thanks in advance.
> <ATT00001.c>
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