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Re: [ontolog-forum] ontolog-forum Digest, Vol 96, Issue 1

To: ontolog-forum@xxxxxxxxxxxxxxxx
From: fatemeh hosseini <fa.hosseinim@xxxxxxxxx>
Date: Sun, 5 Dec 2010 08:00:23 +0330
Message-id: <AANLkTikb0-VMb+M-1orHMVhRDEjdozaHc9g1JUkDR2Tf@xxxxxxxxxxxxxx>
dear all
i  want to get the properties of a class that are required. or that are important.
 if i want to summarize ontology, i select important classes, then i want to get the properties of each selected class that are important and must exist in summary.

i do this:

To find out the "required" properties of a class,

* look at all the superclasses S of C
* if S is a restriction ...
* ... and it is a cardinality restriction with N > 0 ...
* ... or a minCardinality restriction with N > 0 ...

*... or a someValuesFrom from
* ... then its onProperty property P is "required"

 if some instance is to be a member of  C.

What is your idea about this :::?

i need a Reasonable definition,please.

thanks in advance for your help

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