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Re: DBPedia: http://dbpedia.org/resource/Marcos_Escobedo

From: Vishal Sinha <vishal.sinha777@yahoo.com>
Date: Mon, 11 Feb 2013 06:18:57 -0800 (PST)
Message-ID: <1360592337.79236.YahooMailNeo@web140802.mail.bf1.yahoo.com>
To: Paul Wilton <paul.wilton@ontoba.com>
Cc: David Wood <david@3roundstones.com>, "dbpedia-discussion@lists.sourceforge.net" <dbpedia-discussion@lists.sourceforge.net>, "public-lod@w3.org" <public-lod@w3.org>
Hi Paul,
You can just type following in your browser:
Now, you can see: http://dbpedia.org/resource/Miguel_Hidalgo_y_Costilla
against the property:   dbpedia-owl:country
I am just browsing the existing data on DBPedia, I am not sure whethere that happens due to reasoning or 
that is the data without reasoning.
You mentioned that:
"The ontology is best used just as a loose reference guide, not to reason on : )"
I have serious doubts on your this statement.

From: Paul Wilton <paul.wilton@ontoba.com>
To: Vishal Sinha <vishal.sinha777@yahoo.com> 
Cc: David Wood <david@3roundstones.com>; "dbpedia-discussion@lists.sourceforge.net" <dbpedia-discussion@lists.sourceforge.net>; "public-lod@w3.org" <public-lod@w3.org> 
Sent: Monday, February 11, 2013 7:24 PM
Subject: Re: DBPedia: http://dbpedia.org/resource/Marcos_Escobedo

Hi Vishalif you are loading the instance data and the dbpedia ontology into a triple store that has RDFS reasoning capability then its because the ontology properties that are typically defined with domains and ranges are misused throughout the dbpedia instance data - which causes instances to be inferred to be the wrong class types. This is prevalent throughout - its a bit of a mess to say the least. 

The ontology is best used just as a loose reference guide, not to reason on : )


On Mon, Feb 11, 2013 at 12:56 PM, David Wood <david@3roundstones.com> wrote:

Because real data is dirty. 
>On Feb 11, 2013, at 06:01, Vishal Sinha <vishal.sinha777@yahoo.com> wrote:
>>The following resource in DBPedia:
>><http://dbpedia.org/resource/Marcos_Escobedo> is a Person.
>>which has a country: 
>><http://dbpedia.org/resource/Miguel_Hidalgo_y_Costilla> , but in fact that is also a Person.
>>How is this possible?
Received on Monday, 11 February 2013 14:19:24 UTC

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