Hello, I'm perfectly happy with this bottom-up ontology. I understand that it's the natural way to do, looking at DBpedia's extraction approach, and it's proven to be quite useful.
As DBpedia will evolve and more infobox classes are mapped, we can expect future finer-grained ontology versions, with more sub-classes, isn't? Nuno Cardoso, PhD Student. http://xldb.di.fc.ul.pt/ncardoso Try out my new named entity recognition service: Rembrandt - http://xldb.di.fc.ul.pt/Rembrandt/ On Sun, May 31, 2009 at 19:41, Georgi Kobilarov <[email protected]>wrote: > > > - The DBpedia ontology is really a great resource, but I find it a > > little > > > unbalanced -- it could use more subclasses, some of them are really > > strange > > > (for instance, why Women Tennis Association Tournament as the only > > subclass > > > from Sports Events? Why does it need a subclass of its own? > Shouldn't > > it > > > also have other subclasses?) Are you planning on revising it? I have > > my own > > > couple of suggestions to make... > > > > The DBpedia ontology is based on Wikipedia infoboxes, so its coverage > > mirrors those of the infoboxes. Which means it sometimes doesn't make > > sense from a top-down perspective, but on the other hand it is > > grounded in actual modeling of instances by the Wikipedia community, > > which makes it far more useful than most other ontologies (IMO). > > Yes exactly, our philosophy was to only model concepts in the ontology > for which we have data (i.e. infoboxes). > I agree that it sometimes doesn't make sense from a top-down > perspective. But there will hopefully emerge processes to extend our > bottom-up approach towards something more consistent. > > I think Ontology-design approaches will meet somewhere in the middle. > Still I personally prefer a "curated bottom-up approach". > > Cheers, > Georgi > > -- > Georgi Kobilarov > Freie Universtität Berlin > www.georgikobilarov.com >
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