- From: Tim Finin <finin@cs.umbc.edu>
- Date: Mon, 10 Aug 2009 15:24:28 -0400
- To: Kingsley Idehen <kidehen@openlinksw.com>, Anja Jentzsch <anja@anjeve.de>
- CC: "public-lod@w3.org" <public-lod@w3.org>, dbpedia-discussion@lists.sourceforge.net
Kingsley Idehen wrote: > Your dbpedia --> freebase type link mappings are now live re. the public > DBpedia instance. Very very cool stuff! > Graph IRI: <http://dbpedia.org/freebase_type_links#> > ... I thought that this would be super useful, but when I looked at the example in the message http://dbpedia.org/describe/?url=http%3A%2F%2Fdbpedia.org%2Fclass%2Fyago%2FNewYorkCityMusicians&urilookup=1 I noticed that the yago:Musician is declared to be owl:equivalentClass freebase:people/person. This can't be right. Greping through the NT dump I find more than 20K yago classes defined to be the equivalent of Freebase's people/person, including Uyghurs, murdered children and Norwegian Eurovision contestants. Given the semantics of owl:equivalentClass, all 20K of these yago classes are asserted to have the same extent. Now *that's* irrational exuberance! -- Tim Finin, Computer Science & Electrical Engineering, Univ of Maryland Baltimore County, 1000 Hilltop Cir, Baltimore MD 21250. finin@umbc.edu http://umbc.edu/~finin 410-455-3522 fax:-3969 http://ebiquity.umbc.edu
Received on Monday, 10 August 2009 19:25:21 UTC