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Re: [Dbpedia-discussion] Fwd: Your message to Dbpedia-discussion awaits moderator approval

From: Kavitha Srinivas <ksrinivs@gmail.com>
Date: Mon, 10 Aug 2009 16:09:47 -0400
Message-Id: <C93BE7B7-9472-4C75-8B41-A33C983A7A67@gmail.com>
Cc: Kingsley Idehen <kidehen@openlinksw.com>, Anja Jentzsch <anja@anjeve.de>, "public-lod@w3.org" <public-lod@w3.org>, dbpedia-discussion@lists.sourceforge.net
To: Tim Finin <finin@cs.umbc.edu>
Hi Tim
    I understand what you are saying -- but some of this reflects the  
way types are associated with freebase instances.  The types are more  
like 'tags' in the sense that there is no hierarchy, but each  
instance is annotated with multiple types.  So an artist would in  
fact be annotated with person reliably (and probably less  
consistently with /music/artist).  Similar issues with Uyhurs,  
murdered children etc.  The issue is differences in modeling  
granularity as well.  Perhaps a better thing to look at are types  
where the YAGO types map to Wordnet (this is usually at a coarser  
level of granularity).

On Aug 10, 2009, at 3:24 PM, Tim Finin wrote:

> 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
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Received on Monday, 10 August 2009 20:12:13 UTC

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