Hello Markus,
to take a Wikipedia-annotated corpus and replace the the Wikipedia-URIs
by the respective Wikidata-URIs is a great idea, I think I'll try that out.
Thank you!
Samuel
Am 05.02.2017 um 21:40 schrieb Markus Kroetzsch:
On 05.02.2017 15:47, Samuel Printz wrote:
Hello everyone,
I am looking for a text corpus that is annotated with Wikidata entites.
I need this for the evaluation of an entity linking tool based on
Wikidata, which is part of my bachelor thesis.
Does such a corpus exist?
Ideal would be a corpus annotated in the NIF format [1], as I want to
use GERBIL [2] for the evaluation. But it is not necessary.
I don't know of any such corpus, but Wikidata is linked with Wikipedia
in all languages. You can therefore take any Wikipedia article and
find, with very little effort, the Wikidata entity for each link in
the text.
The downside of this is that Wikipedia pages do not link all
occurrences of all linkable entities. You can get a higher coverage
when taking only the first paragraph of each page, but many things
will still not be linked.
However, you could also take any existing Wikipedia-page annotated
corpus and translate the links to Wikidata in the same way.
Finally, DBpedia also is linked to Wikipedia (in fact, the local names
of entities are Wikipedia article names). So if you find any
DBpedia-annotated corpus, you can also translate it to Wikidata easily.
Good luck,
Markus
P.S. If you build such a corpus from another resource, it would be
nice if you could publish it for others to save some effort :-)
Thanks for hints!
Samuel
[1]
https://site.nlp2rdf.org/
[2]
http://aksw.org/Projects/GERBIL.html
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