Le 2013-05-07 14:01, emw a écrit :
"Yes, there is and should be more than one "ontology", and that is
already the case with categories, which are so flexible they can
loop
around and become their own grandfather."
Can someone give an example of where it would be useful to have a
cycle in an ontology? To my knowledge cycles are considered a
problem
in categorization, and would be a problem in a large-scaled
ontology-based classification system as well. My impression has been
that Wikidata's ontology would be a directed acyclic graph (DAG) with
a single root at entity [6] (thing).
Well, to stay on my idea of building an ontology from the "perception"
concept, from perception you can spawn awarness (perceive that you
perceive), from what you can span definition, from what you can define
perception. Ok I'm lean on the details here and you probably need more
concepts and relations to go from perception to definition, but you get
the idea. Moreover I already gave an example with cross-ontology
relations.
What would be the motivation of using a graph as you describe? Is there
particural purpose for such a choice?
On Tue, May 7, 2013 at 3:03 AM, Mathieu Stumpf
<[email protected]> wrote:
Le 2013-05-06 18:13, Jane Darnell a écrit :
Yes, there is and should be more than one "ontology", and that is
already the case with categories, which are so flexible they can
loop
around and become their own grandfather.
To my mind, categories indeed feet better how we think. I'm not sure
"grandfather" is a canonical term in such a graph, I think it's simply
a cycle[1].
[1] https://en.wikipedia.org/wiki/Cycle_%28graph_theory%29 [5]
Dbpedia complaints should be discussed on that list, I am not a
dbpedia user, though I think it's a useful project to have around.
Sorry I didn't want to make off topic messages, nor sound
complaining. I just wanted to give my feedback, hopefuly a
constructive one, on a message posted on this list. I transfered my
message to dbpedia mailing list.
Links:
------
[1] http://mappings.dbpedia.org/
[2] http://mappings.dbpedia.org/server/ontology/classes/
[3] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
[4] https://lists.wikimedia.org/mailman/listinfo/wikidata-l
[5] https://en.wikipedia.org/wiki/Cycle_%28graph_theory%29
[6] http://www.wikidata.org/wiki/Q35120
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