Hi Kingsley,
Just wanted to get clarification if it is expected that the two endpoints
(http://live.dbpedia.org/sparql and http://dbpedia-live.openlinksw.com/sparql)
do not always return the same set of triples for the same sparql query, for
example, on a query such as
CONSTRUCT {?s ?p ?o} WHERE { ?s ?p ?o. FILTER(?s =
<http://dbpedia.org/resource/Silver_Linings_Playbook>) }
Or is this an issue with the http://live.dbpedia.org/sparql endpoint that some
of the expected properties are missing?
ThanksArun
No.
They are variants of the same thing, but clearly not 100% the same.
Regards,
Kingsley Idehen =20
Founder & CEO=20
OpenLink Software =20
Company Web: http://www.openlinksw.com
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740508618350/about
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From: arunchipp...@hotmail.com
To: jimk...@gmail.com
CC: dbpedia-discussion@lists.sourceforge.net
Subject: RE: [Dbpedia-discussion] how to test if extraction of triples on a
wikipedia page is working correctly?
Date: Sun, 3 Mar 2013 14:07:49 -0800
Thanks for your reply, Dimitris.
However, I was already using http://live.dbpedia.org. As I mentioned in my
previous email, I found several cases where expected properties are missing,
when querying using the live.dbpedia.org/sparql endpoint.
For example, below I listed a few cases, where the ontology property for
director is missing from live.dbpedia.org
http://dbpedia.org/resource/Silver_Linings_Playbookhttp://dbpedia.org/resource/Gardens_of_Stonehttp://dbpedia.org/resource/The_Terror_%281963_film%29
However, the other SPARQL endpoint listed for live.dbpedia -
http://dbpedia-live.openlinksw.com/sparql, does return the ontology director
property for the above resources. But my understanding is that the
live.dbpedia.org/sparql endpoint is more recommended, as it is based on the new
Java framework. Am I right?
Is there a reason why these properties are missing when querying using the
live.dbpedia.org/sparql endpoint?
ThanksArun
From: jimk...@gmail.com
Date: Fri, 1 Mar 2013 09:18:05 +0200
Subject: Re: [Dbpedia-discussion] how to test if extraction of triples on a
wikipedia page is working correctly?
To: arunchipp...@hotmail.com
CC: dbpedia-discussion@lists.sourceforge.net
Hi Arun,
DBpedia has two 'modes' the static one, served from http://dbpedia.org and the
live one served from http://live.dbpedia.org.
Static DBpedia is updated once or twice a year with the latest update using
data from May/June 2012 [1]
The article you are looking into is created last month [2] so it does not
exists at all in static dbpedia
You can use the live dbpedia for that (but there are some technical problems
right now so try later)
For improving the framework you can use our online mapping wiki
http://mappings.dbpedia.org
Best,
Dimitris
[1] http://dbpedia.org/Downloads38
[2]
http://en.wikipedia.org/w/index.php?title=Silver_Linings_Playbook&action=history
On Thu, Feb 28, 2013 at 7:36 PM, Arun Chippada <arunchipp...@hotmail.com> wrote:
Hi,
I am seeing several cases where triples for a resource are missing when
querying live.dbpedia.org.
For example, for <http://dbpedia.org/resource/Silver_Linings_Playbook>, the
director property is missing (http://dbpedia.org/property/director or
http://dbpedia.org/ontology/director), as observed from the results of the
below sparql query
CONSTRUCT {?s ?p ?o} WHERE { ?s ?p ?o. FILTER(?s =
<http://dbpedia.org/resource/Silver_Linings_Playbook>) }
However, I don't know the reason for the director property not being returned -
1) is it because the director property was never extracted from the Infobox on
this wikipedia page and therefore it is missing from the backend triple store
in live.dbpedia.org?
2) Or is it because the director property is getting dropped somewhere in the
process of the query?
Is there a way in which I can test if the extraction of properties for a given
wikipedia page is working correctly and expected properties are getting
extracted for that page? Does this require me to install the dbpedia
extraction framework (or) is there something simpler than that?
ThanksArun
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