On Wed, Oct 17, 2012 at 10:23 AM, Dimitris Kontokostas <[email protected]>wrote:
> On Wed, Oct 17, 2012 at 5:10 PM, Tom Morris <[email protected]> wrote:
>
>> The Freebase dump includes direct links for topics which have interwiki
>> links:
>>
>> $ bzgrep /wikipedia/it freebase-datadump-quadruples.tsv.bz2 | head
>> /m/010pld /type/object/key /wikipedia/it
>> Yorktown_$0028Virginia$0029
>> /m/010pld /type/object/key /wikipedia/it_id 1071928
>> /m/010pld /type/object/key /wikipedia/it_title
>> Yorktown_$0028Virginia$0029
>> /m/010vmb /type/object/key /wikipedia/it Walla_Walla
>> /m/010vmb /type/object/key /wikipedia/it_id 2353022
>> /m/010vmb /type/object/key /wikipedia/it_title
>> Walla_Walla
>>
>>
> Do you copy the interwiki links as-is or do you post process them?
>
I don't do anything. You'd have to ask the Freebase team what links they
use (although it should be pretty easy to figure out by comparing the
Freebase dump with the interwiki links).
> We calculated that more than 90% of interlinking errors come from 1-way
> links and thus, we use only the 2-way links for owl:sameAs [1]
>
$40? I'm sure it's a wonderful paper, but I think I'll wait for the movie
version.
Tom
>
> Best,
> Dimitris
>
> [1] http://dx.doi.org/10.1016/j.websem.2012.01.001
>
>
>> On Wed, Oct 17, 2012 at 9:30 AM, Marco Fossati <[email protected]>wrote:
>>
>>>
>>> However, I am wondering how to generate Freebase links for those
>>> lanugage-specific resources that do not have their counterpart in the
>>> English chapter. See for instance the Italian Wikipedia article for
>>> Maurizio Crozza [1]. There is no English counterpart, hence no data in
>>> the English DBpedia, but only in the Italian one [3]. In Freebase, there
>>> is indeed some [4].
>>> So, the core of my question is: how to generate Freebase links from
>>> scratch?
>>>
>>
>> Practically the only way to make the link for Maurizio Crozza is
>> manually, because there's no additional information to match on. If
>> Wikipedia had a link to MusicBrainz or Freebase had one of his movies and
>> thus a link to IMDB, the task might be possible to automate, but with the
>> information that's available it's basically an impossible task. One
>> might imagine a super sophisticated matching tool which was able Gialappa's
>> Band <http://it.wikipedia.org/wiki/Gialappa%27s_Band> references from
>> the WP article and the MusicBrainz album title, but I think that's a real
>> stretch.
>>
>>
>>> Since there is no real RDF Freebase dump, I assume I cannot use a tool
>>> like Silk for the linking task.
>>>
>>
>> It's not the data format that's the problem. You can't use an automated
>> guessing tool like Silk unless it's got at least a little bit of
>> information to base its guesses on. For topics which *do* have other
>> strong identifiers (IMDB, MusicBrainz, Library of Congress, VIAF, etc) or
>> additional information (e.g. birth date) it would be possible to do some
>> automatic matching, but I don't how many of your articles fall into that
>> category.
>>
>> Tom
>>
>>
>>>
>>> [1] http://it.wikipedia.org/wiki/Maurizio_Crozza
>>> [2] http://dbpedia.org/resource/Maurizio_Crozza
>>> [3] http://it.dbpedia.org/resource/Maurizio_Crozza
>>> [4] http://www.freebase.com/view/en/maurizio_crozza
>>>
>>> On 10/17/12 2:04 PM, Dimitris Kontokostas wrote:
>>> > Hi Marco,
>>> >
>>> > In DBpedia Greek we created a script [1] where we created these links
>>> > transitively from the English datasets.
>>> > Note that it needs a few modifications to work with the new directory
>>> > structure.
>>> > If you find it handy and adapt it you can contribute it back for the
>>> > other chapters.
>>> >
>>> > Best,
>>> > Dimitris
>>> >
>>> > [1]
>>> >
>>> http://dbpedia.hg.sourceforge.net/hgweb/dbpedia/extraction_framework/file/7c499145af2c/scripts/shell-scripts/interlinking
>>> >
>>> > On Wed, Oct 17, 2012 at 2:37 PM, Marco Fossati <[email protected]
>>> > <mailto:[email protected]>> wrote:
>>> >
>>> > Forgot the links...
>>> >
>>> > [1] http://wiki.freebase.com/wiki/DBPedia
>>> > [2]
>>> >
>>> http://blog.dbpedia.org/2008/11/15/dbpedia-is-now-interlinked-with-freebase-links-to-opencyc-updated/
>>> >
>>> > On 10/17/12 1:30 PM, Marco Fossati wrote:
>>> > > Hi everyone,
>>> > >
>>> > > In order to improve the Italian DBpedia interlinkage, it would
>>> be
>>> > great
>>> > > to add sameAs links to Freebase.
>>> > > How did you guys do that on the English version?
>>> > > I found a couple of posts in the Freebase wiki [1] and DBpedia
>>> > blog [2]
>>> > > saying it was done some years ago, but I can't find more
>>> details.
>>> > > Could you please tell me more?
>>> > > Thanks!
>>> > >
>>> > > Cheers,
>>> > >
>>> > > Marco
>>> >
>>> >
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>>> >
>>> >
>>> >
>>> > --
>>> > Kontokostas Dimitris
>>>
>>>
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>>
>>
>
>
> --
> Kontokostas Dimitris
>
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