- From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
- Date: Thu, 02 Mar 2006 02:15:08 -0500 (EST)
- To: chen@musc.edu
- Cc: semantic-web@w3.org
From: Chuming Chen <chen@musc.edu> Subject: BNodes in OWL Date: Wed, 01 Mar 2006 23:13:52 -0500 > > Dear All, > > Is it possible to have BNodes in OWL? > > Can anybody give an example or point some references? > > Thanks, > > Chuming Chen > If you mean in OWL Full, any RDF graph is a valid OWL Full graph, blank nodes and all. If you mean OWL DL or OWL Lite, then blank nodes (or, at least, something that would translate into blank nodes) are allowed in certain places, the most interesting being in the Individual construct. In OWL DL and OWL Lite it is possible to leave out the ID in an Individual construct, so in addition to being able to say that John is a Person, via Individual(John type(Person)) you can also say that some object is a Person, via Individual(type(Person)) this anonymous object is just like a blank node. Look in the S&AS document OWL Web Ontology Language Semantics and Abstract Syntax http://www.w3.org/TR/2004/REC-owl-semantics-20040210/ for more information. Peter F. Patel-Schneider
Received on Thursday, 2 March 2006 07:15:24 UTC