Hi Johannes,
Thanks for reporting this, indeed that's a data extraction issue.
The incorrect dates seem to come from Persondata templates, e.g.
http://dbpedia.org/page/Margaret_Hillis - just Persondata
http://dbpedia.org/page/Fan_Linlin - Persondata and normal infobox
Cheers,
Volha
On 10/9/2014 1:19 PM, Kingsley Idehen wrote:
On 10/9/14 3:51 AM, johannes.heine...@orange.com wrote:
Hello
I'm observing a strange ( ?) behaviour on the dbpedia
Sparql-endpoint, and I wonder whether this is due to the underlying
data or to the Sparql-endpoint itself (virtuouso). Following the
dumps of dbpedia 2014, the data seems OK though.
The query
select distinct * {
dbpedia:Cicero <http://dbpedia.org/ontology/birthDate> ?o
}
Returns -043-12-07 (7^th of July 43 BC) which is what I expected.
However
select distinct * {
?s <http://dbpedia.org/ontology/birthDate> ?o
filter(?o < "-43-01-01"^^xsd:date)
} limit 100
List all sorts of things (mainly persons though, but none with a
birthdate before 43 BC). Browsing the dbpedia dumps I found several
person born before 43 BC.
Does anybody know where this error comes from ?
Best regards
Johannes
Its in the data:
1. http://dbpedia.org/resource/Michael_Jordan
2. http://dbpedia.org/resource/Cicero .
--
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OpenLink Software
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---------------------
Dr. Volha Bryl
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