- From: Danny Ayers <danny.ayers@gmail.com>
- Date: Wed, 12 Oct 2005 13:14:29 +0200
- To: "Richard H. McCullough" <rhm@cdepot.net>
- Cc: Gong Cheng <gcheng@seu.edu.cn>, Semantic Web W3C <semantic-web@w3c.org>, Semantic Web Yahoo <semanticweb@yahoogroups.com>
On 10/12/05, Richard H. McCullough <rhm@volcano.net> wrote: > > 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, It might not natively "know" parts, actions and interactions, but all three can to some extent be expressed in OWL. The others - most - are known. > you may well ask "why bother" to distinguish > ObjectProperty from Property? [[ We distinguish properties according to whether they relate individuals to individuals (object properties) or individuals to datatypes (datatype properties). Datatype properties may range over RDF literals or simple types defined in accordance with XML Schema datatypes. ]] http://www.w3.org/TR/2004/REC-owl-guide-20040210/#Datatypes1 Cheers, Danny. -- http://dannyayers.com
Received on Wednesday, 12 October 2005 11:14:35 UTC