Thank you very much for the clarification. I think if I want to get total
number of approximate triples for DBpedia English version, I should get it from
the endpoint with the query suggested.
________________________________
From: Volha Bryl <[email protected]>
Sent: Sunday, April 20, 2014 12:58 PM
To: Gunaratna, Dalkandura Arachchige Kalpa Shashika Silva;
[email protected]
Subject: Re: [Dbpedia-discussion] total number of triples and instances in
current DBpedia version 3.9
Hi,
As it's me who have done the statistics you mention, let me try to clarify. [1]
and [2] are based on DBpedia dumps for 3.9 and 3.8, respectively. The last
DBpedia paper has the numbers for 3.8 - and in the statistics page for 3.8 [2]
you indeed find 3.7 mln entities. Why is "400 mln triples" not there? Because
[2] counts *just* raw property statements extracted from infoboxes (65 mln),
type statements (13.7 mln) and mapped (to DBpedia ontology) property statements
(33.7 mln). It does not count however many other triples: those coming from
inter-language links, abstracts, categories, links to other resources and so
on, check the download pages for the whole list [3,4]. If you count all these,
perhaps, you'll arrive at 400 mln triples. In fact,
SELECT COUNT(*) WHERE {?x ?y ?z}
executed against DBpedia SPARQL endpoint returns 825,761,509 at the moment. And
actually I am not sure that all datasets available at [5] are loaded into the
endpoint, so the total number for English can be even bigger.
Summarizing, [1,2] are good sources for getting numbers of things/instances.
For the number of triples - depends on what you want to count. For types and
properties refer to [1,2], for total number of triples - refer to SPARQL
endpoints for English and some other languages for which the endpoints exist.
Or go through the dumps and count :)
Cheers,
Volha
[1] http://wiki.dbpedia.org/Datasets39/DatasetStatistics
[2] http://wiki.dbpedia.org/Datasets38/DatasetStatistics
[3] http://wiki.dbpedia.org/Downloads39
[4] http://wiki.dbpedia.org/Downloads38
[5] http://downloads.dbpedia.org/3.9/en/
On 4/19/2014 11:59 PM, Gunaratna, Dalkandura Arachchige Kalpa Shashika Silva
wrote:
Hi,
I want to know the correct number of instances and total triples for theEnglish
version of DBpedia 3.9. I have come across the DBpedia statistics page
(http://wiki.dbpedia.org/Datasets39/DatasetStatistics) but it is confusing for
me to get the numbers correct.
The reason being, I read in a paper that they mentioned in DBpedia version 3.4,
it had 3.5 entities (instances) with 672 million triples.
Having that in mind, DBpedia statistics page says that version 3.9 has 4
million (4,004,478) instances and 70 million (70,147,399) raw statements.
Recent DBpedia paper (http://svn.aksw.org/papers/2013/SWJ_DBpedia/public.pdf)
says the English version has 3.7 million things described in 400 million
triples. I believe they are talking about version 3.8. But this number also
does not match with the version 3.8 table in the statistics page.
Couls somebody clarify the correct numbers for me for both English version and
whole DBpedia. Total number of things (instances) and total number of triples.
Thank you very much.
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Dr. Volha Bryl
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