Jörn,
Despite these small issues it's actually quite an interesting dataset, any
> other reasons why it wasn't loaded?
This dataset is part of the NLP series of datasets we've been generating
within the DBpedia Spotlight team. See: http://wiki.dbpedia.org/Datasets/NLP
Since they are a bit different from the "standard" datasets, they were not
loaded. But if the community requests, I'm sure it could be done.
Why not map it to a "dpo:categoryMain" property.
Mostly because it's a wikipedia-specific term. We were looking for
something more generic, but didn't find anything that pleased everybody, so
we picked one and waited to see if it would generate interest in the
community. :) I'm ok with changing it. This is a relationship between an
"entity" (a Wikipedia-independent concept) and a "category" (a
Wikipedia-specific concept), so we might not be able to abstract too far
away from Wikipedia anyhow at this point.
Cheers,
Pablo
On Thu, Oct 25, 2012 at 8:33 PM, Jörn Hees <[email protected]> wrote:
> Hi,
>
> i'm currently deciding on what of the DBpedia 3.8 dumps to load into our
> local mirror… (and updating
> http://joernhees.de/blog/2012/05/25/setting-up-a-local-dbpedia-3-7-mirror-with-virtuoso-6-1-5/).
> I'm a bit clueless about three files on the download that aren't
> explained, so maybe someone could shed some light on them … (I already
> checked http://dbpedia.org/Downloads38, http://wiki.dbpedia.org/Datasets,
> http://wiki.dbpedia.org/Datasets/Properties and
> http://wiki.dbpedia.org/DatasetsLoaded):
>
>
> - http://downloads.dbpedia.org/3.8/en/infobox_test_en.ttl.gz :
> Probably just some leftover from testing?
> ### snip ###
> <http://dbpedia.org/resource/Autism> <
> http://dbpedia.org/resource/Template:Infobox_disease> "Name"@en .
> <http://dbpedia.org/resource/Autism> <
> http://dbpedia.org/resource/Template:Infobox_disease> "Alt"@en .
> …
> <http://dbpedia.org/resource/Anarchism> <
> http://dbpedia.org/resource/Template:Sister_project_links> "n"@en .
> <http://dbpedia.org/resource/Anarchism> <
> http://dbpedia.org/resource/Template:Sister_project_links> "v"@en .
> <http://dbpedia.org/resource/Agricultural_science> <
> http://dbpedia.org/resource/Template:Infobox_Occupation> "name"@en .
> ### /snip ###
>
>
> - http://downloads.dbpedia.org/3.8/en/topical_concepts_en.ttl.bz2 and
> -
> http://downloads.dbpedia.org/3.8/en/topical_concepts_unredirected_en.ttl.bz2:
> It seems they contain category pages which have an associated main
> article. As such very interesting, but it seems they use the deprecated
> skos:subject while all other files use dcterms:subject, and the "redirect
> resolving" wasn't done for the subjects:
>
>
> http://downloads.dbpedia.org/3.8/en/topical_concepts_unredirected_en.ttl.bz2:
> ### snip ###
> <http://dbpedia.org/resource/Category:Futurama> <
> http://www.w3.org/2004/02/skos/core#subject> <
> http://dbpedia.org/resource/Futurama_(TV_series)> .
> <http://dbpedia.org/resource/Futurama_(TV_series)> <
> http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
> http://www.w3.org/2004/02/skos/core#Concept> .
> ### /snip ###
>
> And now with redirects resolved (watch the "_(TV_series)" disappear in the
> object position but not the subject):
> http://downloads.dbpedia.org/3.8/en/topical_concepts_en.ttl.bz2 :
> ### snip ###
> <http://dbpedia.org/resource/Category:Futurama> <
> http://www.w3.org/2004/02/skos/core#subject> <
> http://dbpedia.org/resource/Futurama> .
> <http://dbpedia.org/resource/Futurama_(TV_series)> <
> http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <
> http://www.w3.org/2004/02/skos/core#Concept> .
> ### /snip ###
>
> Are there other places where this might cause "dangling subjects"?
>
> Despite these small issues it's actually quite an interesting dataset, any
> other reasons why it wasn't loaded? Why not map it to a "dpo:categoryMain"
> property. (dcterms:subject is already provided by article_categories and
> foaf:isPrimaryTopciOf wouldn't be correct as it would imply one of them
> being a document and it would cause problems as in older versions where
> people used it to get the corresponding wikipedia page for a topic and
> unintentionally get the category back.)
>
>
> Cheers,
> Jörn
>
>
>
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--
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Pablo N. Mendes
http://pablomendes.com
Events: http://wole2012.eurecom.fr
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