Hi all,

What you can get from DBpedia is

1) template structure (all properties defined in a template)

I am not sure why this was not included in the 2014 release but you can see an example in 3.9 [1]

Our parser cannot handle very complex templates but it is a good start.

I'll make sure these are included in the next release but it is also easy to create a service that extracts them on request

2) mappings wiki

We are in the process of exporting our mappings in RDF using the [R2]RML vocabulary. We have code that does that for simple mappings but it's not ready to get merged yet.

Hopefully we'll have this soon and will be quite easy to query and join.

Even without that, we could get a partial functionality by translating & matching properties from #1

3) mappings wiki (ontology)

links from ontology classes/properties to wikidata, at the moment they are stored in our wiki but could be stored in Wikidata instead as Daniel suggested.

Using all these and interlanguage links I think we can create a (decent) service that can work. I can suggest a DBpedia gsoc project for this if some people are willing to mentor a student [2].

What we would need from the Wikidata/DBpedia community is 

1) more ontology links from DBpedia to Wikidata

2) contributions in the infobox mappings to cover more infoboxes for better coverage

Best,

Dimitris

[1] http://downloads.dbpedia.org/3.9/en/template_parameters_en.ttl.bz2

[2] dbpedia.org/gsoc2015/ideas

On Tue, Mar 3, 2015 at 10:40 PM, Amir E. Aharoni <amir.aharoni@mail.huji.ac.il> wrote:

Thanks, that's a step forward. Now the question is how to bring this all together.

The context that interests me the most is translating an article in ContentTranslation. Let's go with an architect.[1] I am translating an article about an architect from English to Dutch, and it has {{Infobox architect}} at the top. How would ContentTranslation, a MediaWiki extension installed on the Wikimedia cluster, know that the "name" parameter is "naam" in Dutch?

Currently, in theory, it would:
1. Find that there's a corresponding infobox in Dutch using the interlanguage link: https://nl.wikipedia.org/wiki/Sjabloon:Infobox_architect
2. Go to dbpedia and find the English template: http://mappings.dbpedia.org/index.php/Mapping_en:Infobox_architect

3. Find that name is foaf:name
4. Go to dbpedia and find the Dutch template: http://mappings.dbpedia.org/index.php/Mapping_nl:Infobox_architect

5. Find that foaf:name is naam

... And then repeat steps 1 to 5 for each parameter.

Is this something that is possible to query now? (I'm not even talking about performance.)

Even if it is possible to query it, is it good to be dependent on an external website for this? Maybe it makes sense to import the data from dbpedia to Wikidata? It's absolutely not a rhetorical question - maybe it is OK to use dbpedia.

[1] {{Infobox cricketer}} exists in the Dutch Wikipedia, but doesn' appear in the Dutch mappings in dbpedia.

--
Amir Elisha Aharoni · אָמִיר אֱלִישָׁע אַהֲרוֹנִי
http://aharoni.wordpress.com
‪“We're living in pieces,
I want to live in peace.” – T. Moore‬

2015-03-03 20:39 GMT+02:00 Daniel Kinzler <daniel.kinzler@wikimedia.de>:

Am 03.03.2015 um 18:48 schrieb Amir E. Aharoni:
> Trying again... It's a really important topic for me.
>
> How do I go about proposing storing information about templates parameters
> mapping to the community? I kinda understand how Wikidata works, and it sounds
> like something that could be implemented using the current properties, but
> thoughts about moving this forward would be very welcome.

Hi Amir!

We had a call today with the dbPedia folks, about exactly this topic!

The dbPedia mapping wiki[1] has this information, at least to some extent. Let's
say you are looking at {{Cricketer Infobox}} on en. You can look out the DBPedia
mappings for the template parameters on their mapping page[2]. There you can see
that the "country" parameter maps to the "country" proeprty in the dbpedia
ontology[2], which in turn uses owl:equivalentProperty to cross-link P17[4].

I assume this info is also available in machine readable form somewhere, but I
don't know where offhand.

Today we discussed that this mapping should also be available in the opposite
direction: on Wikidata, you can use P1628 ("equivalent property") to
cross-reference the dbPedia ontology. I just added this info to the country
property.

let me know if this helps :)
-- daniel

[1] http://mappings.dbpedia.org/index.php/
[2] http://mappings.dbpedia.org/index.php/Mapping_en:Cricketer_Infobox
[3] http://mappings.dbpedia.org/index.php/OntologyProperty:Country
[4] https://www.wikidata.org/wiki/Property:P17

--
Daniel Kinzler
Senior Software Developer

Wikimedia Deutschland
Gesellschaft zur Förderung Freien Wissens e.V.

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--

Kontokostas Dimitris

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