Hi Marco,
I think, I looked at it some years ago and it still sounds like less
than 5% made it, which is what I remember.
-- Sebastian
On 27.09.19 15:53, Marco Fossati wrote:
Hey Sebastian,
On 9/20/19 10:22 AM, Sebastian Hellmann wrote:
Not much of Freebase did end up in Wikidata.
Dropping here some pointers to shed light on the migration of Freebase
to Wikidata, since I was partially involved in the process:
1. WikiProject [1];
2. the paper behind [2];
3. datasets to be migrated [3].
I can confirm that the migration has stalled: as of today, *528
thousands* Freebase statements were curated by the community, out of
*10 million* ones. By 'curated', I mean approved or rejected.
These numbers come from two queries against the primary sources tool
database.
The stall is due to several causes: in my opinion, the most important
one was the bad quality of sources [4,5] coming from the Knowledge
Vault project [6].
Cheers,
Marco
[1]
https://www.wikidata.org/wiki/Wikidata:WikiProject_Freebase
[2]
http://static.googleusercontent.com/media/research.google.com/en//pubs/arch…
[3]
https://www.wikidata.org/wiki/Wikidata:Primary_sources_tool/Version_1#Data
[4]
https://www.wikidata.org/wiki/Wikidata_talk:Primary_sources_tool/Archive/20…
[5]
https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Semi-automatic_…
[6]
https://www.cs.ubc.ca/~murphyk/Papers/kv-kdd14.pdf
--
All the best,
Sebastian Hellmann
Director of Knowledge Integration and Linked Data Technologies (KILT)
Competence Center
at the Institute for Applied Informatics (InfAI) at Leipzig University
Executive Director of the DBpedia Association
Projects:
http://dbpedia.org,
http://nlp2rdf.org,
http://linguistics.okfn.org,
https://www.w3.org/community/ld4lt
<http://www.w3.org/community/ld4lt>
Homepage:
http://aksw.org/SebastianHellmann
Research Group:
http://aksw.org