Based on the other open related thread [1] there
are references for the
deathDate of 1950 people [2]
I manually checked a random 5 pages and all had a reference "imported
from Wikipedia" so maybe this is a good start
(cc'ing wiki-cite after Dario's suggestion on the other thread)
Best,
Dimitris
[1]
0305-citedFacts.tql.bz2 | bzcat | grep "deathDate"
On Thu, Jun 4, 2015 at 3:00 PM, Markus Krötzsch <
markus(a)semantic-mediawiki.org> wrote:
On 04.06.2015 12:17, Dimitris Kontokostas wrote:
...
Another question: can DBpedia extract references from Wikipedia
articles too? If this would be possible, it might be feasible to
guess and suggest a reference (or a list of references). Especially
with things like date of death, one would expect that references
have a publication date very close to (but strictly after) the
event, which could narrow down the choices very much.
We don't extract them for now, although I think we could relatively
easily. The problem in this case would be that we cannot associate
references with facts. The DBpedia Information Extraction Framework is
quite module and can be easily extended with new extractors but it is
hard to make these extractors "talk to each other".
So we could easily get something like the following
dbp:A dbo:birthDate "..."
dbp:A dbo:deahthDate "..."
dbp:A dbo:reference dbp:r1 # and maybe " dbp:r1 ....something else"
depending on the modeling
dbp:A dbo:reference dbp:r2
but not sure if this solves your problem
Yes, I understand that you can hardly get the association between
extracted facts and references. My suggestion was to extract both
independently and then to query for references that have a publication date
close to a person's death so as to suggest them to users as a possible
reference for the death-date fact. This would still require a manual check,
since we cannot know if the guessed reference belongs to the date of death,
but if it has a high precision it would be a worthwhile way of spending
volunteer time to obtain confirmed references.
At the same time, it might be one of the fastest ways to get sourced
date of death into Wikidata, since news articles will usually appear before
the major authority files are updated (so even if we get donations from
them, some lag would remain). With such an extraction framework, one could
establish a pipeline from Wikipedia to Wikidata.
In the long run, references from authority files will become more
valuable than news articles, because they are more long-lived.
Best wishes,
Markus
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Kontokostas Dimitris
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