Hi Mandar :)
DBpedia does not handle nested templates. It may work for some specific
(simple-enough) templates but it is in no way generalized.
That's why consumer-grade projects consuming Wikipedia data either:1) Scrape
Wikipedia HTML pages directly: i.e. template interpretation is done by
MediaWiki, on wikipedia.com or on dedicated Wikipedia mirrors.2) Set up their
own Wikipedia extraction framework, which may interpret templates directly or
delegate to MediaWiki using its API.
Nicolas.
On Wednesday, February 18, 2015 10:56 AM, Mandar Rahurkar
<rahur...@gmail.com> wrote:
Thanks Guys for your comments ! Release data information for April Love
(film) is availablehttp://dbpedia.org/page/April_Love_(film)
but not for http://dbpedia.org/page/Actrius
And if you examine the wikipedia page, they both seem to use nested
template:http://en.wikipedia.org/w/index.php?title=April_Love_(film)&action=edit
So maybe this is more than one issue?
thanks,Mandar
On Wed, Feb 18, 2015 at 9:22 AM, Alexandru Todor <to...@inf.fu-berlin.de> wrote:
Hi Vladimir, Mandar,
The mappings extractor can't handle nested templates:
http://sourceforge.net/p/dbpedia/mailman/message/32867924/ .@Dimitris : I know
this is on your to do list, any progress so far ?
Cheers,Alexandru
On Wed, Feb 18, 2015 at 5:49 PM, Vladimir Alexiev
<vladimir.alex...@ontotext.com> wrote:
Hi Mandar!
Run these queries on http://yasgui.org/, selecting http://dbpedia.org/sparql as
endpoint.
First check the raw property dbo:released:
PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX dbp: <http://dbpedia.org/property/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
select * {?x a dbo:Film; dbp:released ?rel
filter exists {?x rdfs:label ?lab filter(strstarts(?lab,"Act"))}}
order by ?x limit 100
As you can see many movies have it, but not Actrius.
So Volha is right, the problem is that in that movie it's not a plain date.
> How were you able to extract that information?
It's in https://en.wikipedia.org/w/index.php?title=Actrius&action=edit:
| release = {{Film date|1996|||}}
I tried to make a mapping:
http://mappings.dbpedia.org/index.php/Mapping_en:Film_date
to extract release year and location (there can be several).
But it doesn't extract anything. Maybe templates INSIDE template fields are not
used for extraction?
Issue: https://github.com/dbpedia/mappings-tracker/issues/46
Test cases: http://mappings.dbpedia.org/index.php/Mapping_en_talk:Film_date
If that's the case, we could map it to another date template here:
https://github.com/dbpedia/extraction-framework/blob/master/core/src/main/scala/org/dbpedia/extraction/config/dataparser/DateTimeParserConfig.scala#L97
But Volha, can it extract SEVERAL dates from one template?
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