Tom Purl wrote: > Let's say that I was creating an ontology for a nuclear family (Mom, > Dad, and two kids, Joe and Jane). Let's also say that each family > member had their own page, and that dad's looked like this: > > * [[Name:=Dad]] > * [[Age:=40]] > * [[Has Wife::Mom]] > * [[Has Son::Joe]] > * [[Has Daughter::Jane]] > ... > Here's my question: should I add a relation to the father to Joe's > page, or is there some other mechanism for linking Joe to his father? > In OWL and RDFS , you can state relationships between properties. In your case you can almost use Owl:inverseOf. http://wiki.ontoworld.org/wiki/Owl:inverseOf gives the example
<owl:ObjectProperty rdf:ID="hasChild"> <owl:inverseOf rdf:resource="#hasParent"/> </owl:ObjectProperty> Your example is a little different: Dad [[Has Son::Joe]] entails Joe [[Has Parent::Dad]], but not vice-versa I'm not sure whether OWL and RDFS can represent entailment. > Currently, Joe's page is a little confusing since you can't determine > his father without looking at the back links. However, I don't want to > overdo the relationship links in my wiki. What's the best practice? > http://wiki.ontoworld.org/index.php/Help:Relation#Implicit_Derivation talks about doing this, but details are sketchy. I think it's: 1. export the Wiki as RDF 2. import RDF into OWL/RDFS ontology tool 3. hire buzzword-compliant semantic expert 4. ?? reasoning !! 5. import additional derived properties back into Semantic MediaWiki with http://wiki.ontoworld.org/wiki/Help:Ontology_import or, after step 3 you perform SPARQL queries against the ontology, outside of SMW. It would be great if someone could write something -- even just "Here's what I do" -- about steps 2-5 for us would-be buzzword-compliant semantic experts :-) Cheers, -- =S ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Semediawiki-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/semediawiki-user
