Hi, (01)
John's statements below would be in OWL: (02)
<owl:Thing rdf:ID="myDog">
<rdf:type rdf:resource="#Dog"/>
</owl:Thing> (03)
so for John's 'instance_of' *relationship* the rdf:type is used (04)
<owl:Class rdf:ID="Dog">
<rdfs:subClassOf rdf:resource="#Animal"/>
</owl:Class> (05)
so for John's 'subtype_of' relationship rdfs:subClassOf is used. (06)
In general I think that you should chose also on the basis of least damage
to installed base, keeping in mind where the COSMO will have the strongest
strategical impact. Could that be the Semantic Web, perhaps? (07)
Regards,
Hans (08)
-----Original Message-----
From: ontac-dev-bounces@xxxxxxxxxxxxxx
[mailto:ontac-dev-bounces@xxxxxxxxxxxxxx] On Behalf Of John F. Sowa
Sent: Wednesday, January 18, 2006 19:59
To: ONTAC Taxonomy-Ontology Development Discussion
Subject: Re: [ontac-dev] Type vs. Class et al. (09)
No one is suggesting that: (010)
> ... rather than saying a dog is a subtype of animal. (011)
The correct syntax is: (012)
"A dog is an instance of the type Dog." (013)
"The type Dog is a subtype of the type Animal." (014)
More simply, you can just drop the word "type" in
most discussions: (015)
"A dog is an instance of Dog." (016)
"Dog is a subtype of Animal." (017)
The advantage of using these last two sentence forms
is that they are independent of any choice of words
for Dog or Animal. (018)
John Sowa (019)
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