On Thu, Jun 4, 2015 at 1:18 AM, Markus Krötzsch <markus@semantic-mediawiki.org> wrote:
On 03.06.2015 22:44, Gerard Meijssen wrote:
The Dutch indicated their willingness to add the dead to Wikidata ... I
add quite a few dead from other countries and because of Jura1
Brazilians who died in 2015 have an added significance.

Given that we CAN produce lists like this, it makes sense to reconsider
the offer by the fine people from DBpedia and have the information they
harvest from Wikipedia added automatically to Wikidata.. One reason I
pointed out on my recent blogpost..

DBpedia is getting this information from the contents of the template Persondata as used on Wikipedia [1]. The enwiki community just recently decided to maintain this data on Wikidata instead. I guess this means that (English) DBpedia will not contain this data in the future, unless they import it from Wikidata (they are tracking the issue at [2]).

Note that DBpedia gets person data information both from the persondata template and from the infobox templates using the mappings wiki.
We also noted that the data between the two is many times out of sync (and usually the person data is stalled/wrong because people don't know it's existence).

e.g. we have 28K items with double birth dates one from the infobox and another from persondata.

select count(*) where {?s dbpedia-owl:birthDate ?b1 ; dbpedia-owl:birthDate ?b2 .
filter (?b1 != ?b2 && ?b1 < ?b2)}

The persondata template is used in German Wikipedia as well. The following release has ~ 2.2M triples coming from the german persondata template (which iirc has the same problems as the english)


So you see, times are changing quickly ... but overall I hope that this is still solving the problem you identified, in fact in a much more direct way than one might have hoped for :-).

DBpedia may still play a role. I don't know how exactly the enwiki community is planning to implement the move from Persondata to Wikidata. It could be that DBpedia is the only project extracting this data. So in a way, your suggestion might be a great idea, though not as a long-term data maintenance plan but as a one-time help for migration.

To support data maintenance further, it would make sense to use bots for synching with authority files. These files also contain death dates and they can even be used as a valid reference.



[1] https://en.wikipedia.org/wiki/Template:Persondata
[2] https://github.com/dbpedia/extraction-framework/issues/397



On 3 June 2015 at 07:16, Gerard Meijssen <gerard.meijssen@gmail.com
<mailto:gerard.meijssen@gmail.com>> wrote:

    Jura1 created a wonderful list of people who died in Brazil in 2015
    [1]. It is  a page that may update regularly from Wikidata thanks to
    the ListeriaBot. Obviously, there may be a few more because I am
    falling ever more behind with my quest for registering deaths in 2015.

    I have copied his work and created a page for people who died in the
    Netherlands in 2015 [2]. It is trivially easy to do this and, the
    result is great. The result looks great, it can be used for any
    country in any Wikipedia

    The Dutch Wikipedia indicated that they nowadays maintain important
    metadata at Wikidata. I am really happy that we can showcase their
    work. It is important work because as someone reminded me at some
    stage, this is part of what amounts to the policy of living people...


    [1] https://www.wikidata.org/wiki/User:Jura1/Recent_deaths_in_Brazil

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