[foaf-dev] How to handle multiple cognitive characteristics on the same topic?

Hi,

until yesterday, I thought that the expressiveness of the Cognitive 
Characteristics Ontology[1] would also include the use case of handling 
multiple cognitive characteristics on the same topic. However, today I 
noticed a problem with that modelling. Now, I'm looking forward for an 
elegant solution.
The problem can be illustrated in the following example (see also [2]):

ex:APerson
	a foaf:Person , cv:Person ;
	foaf:name "John Wayne" ;
	cco:skill <http://dbpedia.org/resource/Football_(soccer)> ;
	cco:expertise <http://dbpedia.org/resource/Football_(soccer)> ;
	cco:interest <http://dbpedia.org/resource/Football_(soccer)> ;
	cco:habit [
		a cco:CognitiveCharacteristic ;
		cco:topic <http://dbpedia.org/resource/Football_(soccer)> ;
		wo:weight [
			a wo:Weight ;
       		wo:weight_value 6.0 ;
       		wo:scale ex:AScale
       		] ;
       	cco:activity 
<http://sw.opencyc.org/concept/Mx4rwJRiEpwpEbGdrcN5Y29ycA>
		] ;
	cco:habit [
		a cco:CognitiveCharacteristic ;
		cco:topic <http://dbpedia.org/resource/Football_(soccer)> ;
		wo:weight [
			a wo:Weight ;
       		wo:weight_value 7.0 ;
       		wo:scale ex:AScale
       		] ;
		] ;
	cco:habit [
		a cco:CognitiveCharacteristic ;
		cco:topic <http://dbpedia.org/resource/Football_(soccer)> ;
		wo:weight [
			a wo:Weight ;
       		wo:weight_value 5.0 ;
       		wo:scale ex:AScale
       		] ;
       	cco:activity 
<http://sw.opencyc.org/concept/Mx4rwO0J55wpEbGdrcN5Y29ycA> .
		] .

A person, who has 3 cognitive patterns with the topic soccer - a skill, 
an expertise and an interest. However, the activity vary re. these 
cognitive patterns. The activity

- re. the skill should be playing 
(http://sw.opencyc.org/concept/Mx4rwJRiEpwpEbGdrcN5Y29ycA) -> hence 
"soccer playing"
- re. the expertise is not set, it should simple express that the person 
has some "knowledge of soccer" (e.g. soccer rules)
- re. the interest should be watching 
(http://sw.opencyc.org/concept/Mx4rwO0J55wpEbGdrcN5Y29ycA) -> hence, 
"soccer watching"

So I tried to apply Named Graphs (again). That means, I separated each 
"shortcut relation" with its detail description (see also [3]):

ex:APerson
	a foaf:Person ;
	foaf:name "John Wayne" .
	
ex:NG1 {
	ex:APerson 	
		cco:skill <http://dbpedia.org/resource/Football_(soccer)> ;
		cco:habit [
			a cco:CognitiveCharacteristic ;
			cco:topic <http://dbpedia.org/resource/Football_(soccer)> ;
			wo:weight [
				a wo:Weight ;
       			wo:weight_value 6.0 ;
       			wo:scale ex:AScale
       			] ;
       		cco:activity 
<http://sw.opencyc.org/concept/Mx4rwJRiEpwpEbGdrcN5Y29ycA>
			] .
		}
		
ex:NG2 {
	ex:APerson		
		cco:expertise <http://dbpedia.org/resource/Football_(soccer)> ;
		cco:habit [
			a cco:CognitiveCharacteristic ;
			cco:topic <http://dbpedia.org/resource/Football_(soccer)> ;
			wo:weight [
				a wo:Weight ;
       			wo:weight_value 7.0 ;
       			wo:scale ex:AScale
       			] ;
			] .
		}
		
ex:NG3 {
	ex:APerson		
		cco:interest <http://dbpedia.org/resource/Football_(soccer)> ;
		cco:habit [
			a cco:CognitiveCharacteristic ;
			cco:topic <http://dbpedia.org/resource/Football_(soccer)> ;
			wo:weight [
				a wo:Weight ;
       			wo:weight_value 5.0 ;
       			wo:scale ex:AScale
       			] ;
       		cco:activity 
<http://sw.opencyc.org/concept/Mx4rwO0J55wpEbGdrcN5Y29ycA>
			] .
	}

Further proposals are:

- entail only the "shortcut relation" into a named graph and related the 
detail description directly to the named graph, e.g. ex:NG1 cco:habit [ 
... ]
- introduce a further property with a domain of 
cco:CognitiveCharacteristic, which directs to the applied cognitive 
characteristic, e.g. ex:CC1 cco:applied_cognitive_characteristic cco:skill
	-> then we might somehow fall back to the "standard" 		
	reification approach (subject relation -> cco:agent/cco:habit; 	
	predicate relation -> cco:applied_cognitive_characteristic;
	object relation -> cco:topic)
- we can introduce further sub classes of cco:CognitiveCharacteristic, 
which reflect the specific cognitive characteristics, e.g. cco:Skill for 
cco:skill, and define further specific property chain axioms for them
	-> this would end up in a parallel hierarchy, which is, as far 	
	as I know, not a good design

I have the feeling, that we need some proper Named Graph / Quad 
semantics, or?

Cheers,


Bob


[1] http://smiy.sourceforge.net/cco/spec/cognitivecharacteristics.html
[2] http://smiy.sourceforge.net/cco/examples/N3/cco_-_football_example.n3
[3] 
http://smiy.sourceforge.net/cco/examples/N3/cco_-_football_example_-_w_named_graphs.n3