- From: Richard H. McCullough <rhm@volcano.net>
- Date: Wed, 12 Oct 2005 02:36:09 -0700
- To: "Gong Cheng" <gcheng@seu.edu.cn>, "Semantic Web W3C" <semantic-web@w3c.org>
- Cc: "Semantic Web Yahoo" <semanticweb@yahoogroups.com>
In the broader context of knowledge representation, properties can be classified as follows definition - genus/differentia or union/intersection (Restrictions) part - components of a single entity attribute - static properties of a single entity relation - property relating two or more entities action - dynamic properties of a single entity interaction - dynamic properties of two or more entities hierarchy - subClassOf, subPropertyOf ... Since OWL does not "know" most of these subclasses, you may well ask "why bother" to distinguish ObjectProperty from Property? I think it all depends on the context of your application. Just ask yourself whether the distinctions listed above are important in your application. Dick McCullough knowledge := man do identify od existent done; knowledge haspart proposition list; http://rhm.cdepot.net/ ----- Original Message ----- From: "Gong Cheng" <gcheng@seu.edu.cn> To: "Semantic Web W3C" <semantic-web@w3c.org> Cc: "Semantic Web Yahoo" <semanticweb@yahoogroups.com> Sent: Wednesday, October 12, 2005 12:26 AM Subject: Why little usage of ObjectProperty > > Hi all, > > I'm new to SW and Ontology. I have read some ontologies but found that > little ObjectProperty is used. In my opinion, ObjectProperty represents > the relationship between concepts. It is very important in the model as > well as in the real world. But in most ontologies, it is really hard to > find customed ObjectProperty except for the subClassOf, hierarchy I mean. > So is ObjectProperty really unimportant? > I'm looking forward to your suggestions! > > Regards, > > Gong Cheng > > ------------------------------------------------------------- > Gong Cheng > Department of Computer Science and Engineering > Southeast University, Nanjing, P. R. China > Phone: +86-(0)25-83793235 > Fax: +86-(0)25-83794838 > E-mail: gcheng@seu.edu.cn > Address: Department of Computer Science and Engineering > Southeast University > Nanjing 210096, P. R. China > ------------------------------------------------------------- > > > >
Received on Wednesday, 12 October 2005 09:37:37 UTC