Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identities http://worldcat.org/identities/" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
If you have an external identifier you often can find the record you want
Worldcat can use the lccn property
See http://worldcat.org/identities/lccn-n79005597/ That is Wikidata Q7724https://www.wikidata.org/wiki/Q7724 that has property P244 lcauth https://m.wikidata.org/wiki/Property:P244
If you check VIAF you see The Wikidata record https://viaf.org/viaf/54154627/ and also Lccn 79005597 https://viaf.org/processed/LC%7Cn%20%2079005597
You can also use the Lccn number and find the Wikidata record https://tools.wmflabs.org/sqid/#/view?find=P244:n79005597
Hope it make sense.... its loosely coupled system and then it maybe is not the best structure.....
Regards Magnus Sälgö Stockholm, Sweden
6 mars 2018 kl. 18:15 skrev Ettore RIZZA <ettorerizza@gmail.commailto:ettorerizza@gmail.com>:
Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identitieshttps://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7C24ed3d8b41df4df00fc008d58385ecec%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559533579975247&sdata=DhHWzrQOoGjvmELLEAEXk49jehINSaIzcaSI2%2F9yWeg%3D&reserved=0" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza _______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.orgmailto:Wikidata@lists.wikimedia.org https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wiki...
Technically, there's 2 :-)
- Library of Congress authority ID (P244) https://www.wikidata.org/wiki/Property:P244: Library of Congress ID for authority control for persons, works, organizations and subject headings (for book editions use P1144). Format: 1-2 specific letters followed by 8-10 digits (see regex).
- LCOC LCCN (bibliographic) (P1144) https://www.wikidata.org/wiki/Property:P1144: Library of Congress ID for bibliographic records (for books, serials, maps, music, video, etc only; for names use P244)
-Thad +ThadGuidry https://plus.google.com/+ThadGuidry
On Tue, Mar 6, 2018 at 11:36 AM Magnus Sälgö salgo60@msn.com wrote:
If you have an external identifier you often can find the record you want
Worldcat can use the lccn property
See http://worldcat.org/identities/lccn-n79005597/ That is Wikidata Q7724 https://www.wikidata.org/wiki/Q7724 that has property P244 lcauth https://m.wikidata.org/wiki/Property:P244
If you check VIAF you see The Wikidata record https://viaf.org/viaf/54154627/ and also Lccn 79005597 https://viaf.org/processed/LC%7Cn%20%2079005597
You can also use the Lccn number and find the Wikidata record https://tools.wmflabs.org/sqid/#/view?find=P244:n79005597
Hope it make sense.... its loosely coupled system and then it maybe is not the best structure.....
Regards Magnus Sälgö Stockholm, Sweden
6 mars 2018 kl. 18:15 skrev Ettore RIZZA ettorerizza@gmail.com:
Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identities
https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7C24ed3d8b41df4df00fc008d58385ecec%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559533579975247&sdata=DhHWzrQOoGjvmELLEAEXk49jehINSaIzcaSI2%2F9yWeg%3D&reserved=0" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to
Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
Wikidata mailing list Wikidata@lists.wikimedia.org
https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wiki...
Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata
Hi Ettore,
we just released a very early prototype of the new DBpedia:
http://88.99.242.78/hdt/en_wiki_de_sv_nl_fr-replaced.nt.bz2
I attached the first 1000 triples. The data is a merge of Wikidata + 5 DBpedias from the 5 largest Wikipedia versions. Overall, there are many issues, but we have a test-driven data engineering process combined with Scrum and biweekly releases, next one is on March 15th. The new IDs are also stable by design.
We discussed how to effectively reuse all technologies we have for Wikidata and also Wikipedia and are applying with this project at the moment: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/GlobalFactSync
(Endorsements on the main page and comments on the talk page are welcome).
We really hope that the project gets accepted, so we can deploy the technologies behind DBpedia to the Wikiverse, e.g. we found over 900k triples/statements with references in the English Wikipedia's Infoboxes alone.
We still have to do documentation and hosting of the new releases, but then it would indeed be a good time to add the links to DBpedia, if nobody objects. Also some people mentioned that we could load the DBpedia Ontology into Wikidata to provide an alternate class hierarchy. In DBpedia we loaded 5 or 6 classification schemes (Yago, Umbel, etc.), which are useful for different kind of queries.
All the best, Sebastian
On 06.03.2018 18:14, Ettore RIZZA wrote:
Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identities
http://worldcat.org/identities/" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to
Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata
First of all, thank you all for your answers.
@Magnus and Thad: it's a bit what I suspected. Since the URL to WorldCat can be rebuilt from the Library of congress authority ID, I guess someone thought it would be a duplicate.
But 1) I'm not sure that there is a 1 to 1 mapping between all Worldcat Identities and the Library of Congress 2) It would be rather strange that a Library of Congress ID would also serve as an ID for a "competitor" (ie OCLC, which maintains Worldcat and VIAF) 3) One would then wonder why Wikipedia provides both links to the Library of Congress Authority ID and Worldcat Identities.
With respect for the fact that Wikidata already contains links to VIAF and that VIAF contains links to Worldcat Identities, this transitivity reasoning could apply to many other Authority IDs, I think.
@Sebastian: Il would be great! I'll follow this project closely, just as I'm already following your papers https://content.iospress.com/articles/semantic-web/sw277. And it is precisely because I know that there is a desire for "rapprochement" on both sides that I asked why there is absolutely nothing in Wikidata that links to DBpedia (or Yago), whereas DBpedia contains a lot of owl: sameAs to Wikidata. All this must have been discussed somewhere I suppose. Still, I do not even find a property proposal for "DBpedia link".
2018-03-06 18:59 GMT+01:00 Sebastian Hellmann < hellmann@informatik.uni-leipzig.de>:
Hi Ettore,
we just released a very early prototype of the new DBpedia:
http://88.99.242.78/hdt/en_wiki_de_sv_nl_fr-replaced.nt.bz2
I attached the first 1000 triples. The data is a merge of Wikidata + 5 DBpedias from the 5 largest Wikipedia versions. Overall, there are many issues, but we have a test-driven data engineering process combined with Scrum and biweekly releases, next one is on March 15th. The new IDs are also stable by design.
We discussed how to effectively reuse all technologies we have for Wikidata and also Wikipedia and are applying with this project at the moment: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/ GlobalFactSync (Endorsements on the main page and comments on the talk page are welcome).
We really hope that the project gets accepted, so we can deploy the technologies behind DBpedia to the Wikiverse, e.g. we found over 900k triples/statements with references in the English Wikipedia's Infoboxes alone.
We still have to do documentation and hosting of the new releases, but then it would indeed be a good time to add the links to DBpedia, if nobody objects. Also some people mentioned that we could load the DBpedia Ontology into Wikidata to provide an alternate class hierarchy. In DBpedia we loaded 5 or 6 classification schemes (Yago, Umbel, etc.), which are useful for different kind of queries.
All the best, Sebastian
On 06.03.2018 18:14, Ettore RIZZA wrote:
Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identities
http://worldcat.org/identities/" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to
Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
Wikidata mailing listWikidata@lists.wikimedia.orghttps://lists.wikimedia.org/mailman/listinfo/wikidata
-- 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
Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata
If Dbpedia has “same as” then Wikidata doesn’t have to duplicate that information.... you can ask dbpedia what is same as Q7724
Regards Magnus Sälgö Stockholm, Sweden
6 mars 2018 kl. 19:49 skrev Ettore RIZZA <ettorerizza@gmail.commailto:ettorerizza@gmail.com>:
First of all, thank you all for your answers.
@Magnus and Thad: it's a bit what I suspected. Since the URL to WorldCat can be rebuilt from the Library of congress authority ID, I guess someone thought it would be a duplicate.
But 1) I'm not sure that there is a 1 to 1 mapping between all Worldcat Identities and the Library of Congress 2) It would be rather strange that a Library of Congress ID would also serve as an ID for a "competitor" (ie OCLC, which maintains Worldcat and VIAF) 3) One would then wonder why Wikipedia provides both links to the Library of Congress Authority ID and Worldcat Identities.
With respect for the fact that Wikidata already contains links to VIAF and that VIAF contains links to Worldcat Identities, this transitivity reasoning could apply to many other Authority IDs, I think.
@Sebastian: Il would be great! I'll follow this project closely, just as I'm already following your papershttps://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcontent.iospress.com%2Farticles%2Fsemantic-web%2Fsw277&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=R1LeZSVSLmdZ%2FiJh6evIwrukAgtQQhzz7OxrJNL%2FXVg%3D&reserved=0. And it is precisely because I know that there is a desire for "rapprochement" on both sides that I asked why there is absolutely nothing in Wikidata that links to DBpedia (or Yago), whereas DBpedia contains a lot of owl: sameAs to Wikidata. All this must have been discussed somewhere I suppose. Still, I do not even find a property proposal for "DBpedia link".
2018-03-06 18:59 GMT+01:00 Sebastian Hellmann <hellmann@informatik.uni-leipzig.demailto:hellmann@informatik.uni-leipzig.de>:
Hi Ettore,
we just released a very early prototype of the new DBpedia:
http://88.99.242.78/hdt/en_wiki_de_sv_nl_fr-replaced.nt.bz2https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2F88.99.242.78%2Fhdt%2Fen_wiki_de_sv_nl_fr-replaced.nt.bz2&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=oml9kGY8ikCsVFH0jmSFx3txDjQGyT6lj%2FSxangnIZM%3D&reserved=0
I attached the first 1000 triples. The data is a merge of Wikidata + 5 DBpedias from the 5 largest Wikipedia versions. Overall, there are many issues, but we have a test-driven data engineering process combined with Scrum and biweekly releases, next one is on March 15th. The new IDs are also stable by design.
We discussed how to effectively reuse all technologies we have for Wikidata and also Wikipedia and are applying with this project at the moment: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/GlobalFactSynchttps://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmeta.wikimedia.org%2Fwiki%2FGrants%3AProject%2FDBpedia%2FGlobalFactSync&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cOIU%2FCe93h%2Ft4b1PdIDhMJWL%2FZB2XKnere%2BulFSZAFE%3D&reserved=0
(Endorsements on the main page and comments on the talk page are welcome).
We really hope that the project gets accepted, so we can deploy the technologies behind DBpedia to the Wikiverse, e.g. we found over 900k triples/statements with references in the English Wikipedia's Infoboxes alone.
We still have to do documentation and hosting of the new releases, but then it would indeed be a good time to add the links to DBpedia, if nobody objects. Also some people mentioned that we could load the DBpedia Ontology into Wikidata to provide an alternate class hierarchy. In DBpedia we loaded 5 or 6 classification schemes (Yago, Umbel, etc.), which are useful for different kind of queries.
All the best, Sebastian
On 06.03.2018 18:14, Ettore RIZZA wrote: Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identitieshttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=Bx%2FA%2BPh9nQzNuzrRgRg5dC3s%2BJeKKWNGKUSRguq4Ks4%3D&reserved=0" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
_______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.orgmailto:Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidatahttps://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=009ZtINq4Vn2yyUJCa13auEnej%2FAbLzA%2BIJt1ogzuTg%3D&reserved=0
-- 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.orghttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdbpedia.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=OravJiJyUy%2FLVYoQ5yNQYU0xDcHFH02%2Bp%2BbDWWECHH0%3D&reserved=0, http://nlp2rdf.orghttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnlp2rdf.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=m1DRusIhPt%2BtHIC7qkzZVvR2ssCaOart8aPamygKRxI%3D&reserved=0, http://linguistics.okfn.orghttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Flinguistics.okfn.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=ysbEhRyeB22OtS9R05hjeZXUAGp5gMF3zFtPYSNkknE%3D&reserved=0, https://www.w3.org/community/ld4lthttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.w3.org%2Fcommunity%2Fld4lt&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cr9gVjhIIDJMKyrOFioFOICmwyIui8EqUMdkB6M%2B034%3D&reserved=0 Homepage: http://aksw.org/SebastianHellmannhttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Faksw.org%2FSebastianHellmann&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=i7ub%2FNWG6g1iKtDI01T01r%2Fkxuww%2BZbHuuOdM4ZDJJY%3D&reserved=0 Research Group: http://aksw.orghttps://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Faksw.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata=9tTgkynNjB2sAwFSWTfQGJD7cPt5vOeVOkTLsRsAjls%3D&reserved=0
_______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.orgmailto:Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidatahttps://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata=x1rQozrTo277ACWslPrvu9w86hGDew1RbmyKgvcK%2BfU%3D&reserved=0
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Hm, now I am also curious and would like to ask the same question as Ettore. What is the policy here?
Viaf has schema.org backlinks, see https://viaf.org/viaf/85312226/rdf.xml
<schema:sameAs rdf:resource="http://www.wikidata.org/entity/Q80%22/%3E
Then it's ok to duplicate? because it is not owl:sameAs?
All the best, Sebastain
On 06.03.2018 20:01, Magnus Sälgö wrote:
If Dbpedia has “same as” then Wikidata doesn’t have to duplicate that information.... you can ask dbpedia what is same as Q7724
Regards Magnus Sälgö Stockholm, Sweden
6 mars 2018 kl. 19:49 skrev Ettore RIZZA <ettorerizza@gmail.com mailto:ettorerizza@gmail.com>:
First of all, thank you all for your answers.
@Magnus and Thad: it's a bit what I suspected. Since the URL to WorldCat can be rebuilt from the Library of congress authority ID, I guess someone thought it would be a duplicate.
But 1) I'm not sure that there is a 1 to 1 mapping between all Worldcat Identities and the Library of Congress 2) It would be rather strange that a Library of Congress ID would also serve as an ID for a "competitor" (ie OCLC, which maintains Worldcat and VIAF) 3) One would then wonder why Wikipedia provides both links to the Library of Congress Authority ID and Worldcat Identities.
With respect for the fact that Wikidata already contains links to VIAF and that VIAF contains links to Worldcat Identities, this transitivity reasoning could apply to many other Authority IDs, I think.
@Sebastian: Il would be great! I'll follow this project closely, just as I'm already following your papers https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcontent.iospress.com%2Farticles%2Fsemantic-web%2Fsw277&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=R1LeZSVSLmdZ%2FiJh6evIwrukAgtQQhzz7OxrJNL%2FXVg%3D&reserved=0. And it is precisely because I know that there is a desire for "rapprochement" on both sides that I asked why there is absolutely nothing in Wikidata that links to DBpedia (or Yago), whereas DBpedia contains a lot of owl: sameAs to Wikidata. All this must have been discussed somewhere I suppose. Still, I do not even find a property proposal for "DBpedia link".
2018-03-06 18:59 GMT+01:00 Sebastian Hellmann <hellmann@informatik.uni-leipzig.de mailto:hellmann@informatik.uni-leipzig.de>:
Hi Ettore, we just released a very early prototype of the new DBpedia: http://88.99.242.78/hdt/en_wiki_de_sv_nl_fr-replaced.nt.bz2 <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2F88.99.242.78%2Fhdt%2Fen_wiki_de_sv_nl_fr-replaced.nt.bz2&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=oml9kGY8ikCsVFH0jmSFx3txDjQGyT6lj%2FSxangnIZM%3D&reserved=0> I attached the first 1000 triples. The data is a merge of Wikidata + 5 DBpedias from the 5 largest Wikipedia versions. Overall, there are many issues, but we have a test-driven data engineering process combined with Scrum and biweekly releases, next one is on March 15th. The new IDs are also stable by design. We discussed how to effectively reuse all technologies we have for Wikidata and also Wikipedia and are applying with this project at the moment: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/GlobalFactSync <https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmeta.wikimedia.org%2Fwiki%2FGrants%3AProject%2FDBpedia%2FGlobalFactSync&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cOIU%2FCe93h%2Ft4b1PdIDhMJWL%2FZB2XKnere%2BulFSZAFE%3D&reserved=0> (Endorsements on the main page and comments on the talk page are welcome). We really hope that the project gets accepted, so we can deploy the technologies behind DBpedia to the Wikiverse, e.g. we found over 900k triples/statements with references in the English Wikipedia's Infoboxes alone. We still have to do documentation and hosting of the new releases, but then it would indeed be a good time to add the links to DBpedia, if nobody objects. Also some people mentioned that we could load the DBpedia Ontology into Wikidata to provide an alternate class hierarchy. In DBpedia we loaded 5 or 6 classification schemes (Yago, Umbel, etc.), which are useful for different kind of queries. All the best, Sebastian On 06.03.2018 18:14, Ettore RIZZA wrote:Dear all, I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example: - Why Wikidata has no property "Worldcat Identities <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=Bx%2FA%2BPh9nQzNuzrRgRg5dC3s%2BJeKKWNGKUSRguq4Ks4%3D&reserved=0>" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ? - Why do VIAF links to all editions of Wikipedia, but not (simply) to Wikidata ? - Why is there no link to DBpedia when the opposite is true ? These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata. Could someone point me to some documentation on these issues ? Cheers, Ettore Rizza _______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.org <mailto:Wikidata@lists.wikimedia.org> https://lists.wikimedia.org/mailman/listinfo/wikidata <https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=009ZtINq4Vn2yyUJCa13auEnej%2FAbLzA%2BIJt1ogzuTg%3D&reserved=0>-- 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 <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdbpedia.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=OravJiJyUy%2FLVYoQ5yNQYU0xDcHFH02%2Bp%2BbDWWECHH0%3D&reserved=0>, http://nlp2rdf.org <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnlp2rdf.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=m1DRusIhPt%2BtHIC7qkzZVvR2ssCaOart8aPamygKRxI%3D&reserved=0>, http://linguistics.okfn.org <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Flinguistics.okfn.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=ysbEhRyeB22OtS9R05hjeZXUAGp5gMF3zFtPYSNkknE%3D&reserved=0>, https://www.w3.org/community/ld4lt <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.w3.org%2Fcommunity%2Fld4lt&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cr9gVjhIIDJMKyrOFioFOICmwyIui8EqUMdkB6M%2B034%3D&reserved=0> Homepage: http://aksw.org/SebastianHellmann <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Faksw.org%2FSebastianHellmann&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=i7ub%2FNWG6g1iKtDI01T01r%2Fkxuww%2BZbHuuOdM4ZDJJY%3D&reserved=0> Research Group: http://aksw.org <https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Faksw.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata=9tTgkynNjB2sAwFSWTfQGJD7cPt5vOeVOkTLsRsAjls%3D&reserved=0> _______________________________________________ Wikidata mailing list Wikidata@lists.wikimedia.org <mailto:Wikidata@lists.wikimedia.org> https://lists.wikimedia.org/mailman/listinfo/wikidata <https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata=x1rQozrTo277ACWslPrvu9w86hGDew1RbmyKgvcK%2BfU%3D&reserved=0>
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If Dbpedia has “same as” then Wikidata doesn’t have to duplicate that information.... you can ask dbpedia what is same as Q7724
Sebastian Hellman beats me to my question. Perhaps our points of view are different. From mine, which is that of a data consumer and a network enthusiast, the difference between a simple link and two-way links is huge. I mean, links are cheap and linked data is just about links. Instead of a heavy, complex and often empty federated SPAQL query, it would be enough to ask Wikidata to get the information of DBpedia (I think Wikidata is intended to contain one day all the DBpedia entities). Just as one will be able to query Wikidata one day to know the VIAF ID of any writer. I believe that Wikidata is destined to become a data hub of this kind, but maybe I'm wrong.
Best regards,
Ettore Rizza
2018-03-06 20:11 GMT+01:00 Sebastian Hellmann < hellmann@informatik.uni-leipzig.de>:
Hm, now I am also curious and would like to ask the same question as Ettore. What is the policy here?
Viaf has schema.org backlinks, see https://viaf.org/viaf/85312226/rdf.xml
<schema:sameAs rdf:resource="http://www.wikidata.org/entity/Q80" http://www.wikidata.org/entity/Q80/> Then it's ok to duplicate? because it is not owl:sameAs?
All the best, Sebastain
On 06.03.2018 20:01, Magnus Sälgö wrote:
If Dbpedia has “same as” then Wikidata doesn’t have to duplicate that information.... you can ask dbpedia what is same as Q7724
Regards Magnus Sälgö Stockholm, Sweden
6 mars 2018 kl. 19:49 skrev Ettore RIZZA ettorerizza@gmail.com:
First of all, thank you all for your answers.
@Magnus and Thad: it's a bit what I suspected. Since the URL to WorldCat can be rebuilt from the Library of congress authority ID, I guess someone thought it would be a duplicate.
But 1) I'm not sure that there is a 1 to 1 mapping between all Worldcat Identities and the Library of Congress 2) It would be rather strange that a Library of Congress ID would also serve as an ID for a "competitor" (ie OCLC, which maintains Worldcat and VIAF) 3) One would then wonder why Wikipedia provides both links to the Library of Congress Authority ID and Worldcat Identities.
With respect for the fact that Wikidata already contains links to VIAF and that VIAF contains links to Worldcat Identities, this transitivity reasoning could apply to many other Authority IDs, I think.
@Sebastian: Il would be great! I'll follow this project closely, just as I'm already following your papers https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcontent.iospress.com%2Farticles%2Fsemantic-web%2Fsw277&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=R1LeZSVSLmdZ%2FiJh6evIwrukAgtQQhzz7OxrJNL%2FXVg%3D&reserved=0. And it is precisely because I know that there is a desire for "rapprochement" on both sides that I asked why there is absolutely nothing in Wikidata that links to DBpedia (or Yago), whereas DBpedia contains a lot of owl: sameAs to Wikidata. All this must have been discussed somewhere I suppose. Still, I do not even find a property proposal for "DBpedia link".
2018-03-06 18:59 GMT+01:00 Sebastian Hellmann <hellmann@informatik.uni- leipzig.de>:
Hi Ettore,
we just released a very early prototype of the new DBpedia:
http://88.99.242.78/hdt/en_wiki_de_sv_nl_fr-replaced.nt.bz2 https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2F88.99.242.78%2Fhdt%2Fen_wiki_de_sv_nl_fr-replaced.nt.bz2&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=oml9kGY8ikCsVFH0jmSFx3txDjQGyT6lj%2FSxangnIZM%3D&reserved=0
I attached the first 1000 triples. The data is a merge of Wikidata + 5 DBpedias from the 5 largest Wikipedia versions. Overall, there are many issues, but we have a test-driven data engineering process combined with Scrum and biweekly releases, next one is on March 15th. The new IDs are also stable by design.
We discussed how to effectively reuse all technologies we have for Wikidata and also Wikipedia and are applying with this project at the moment: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/Globa lFactSync https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmeta.wikimedia.org%2Fwiki%2FGrants%3AProject%2FDBpedia%2FGlobalFactSync&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cOIU%2FCe93h%2Ft4b1PdIDhMJWL%2FZB2XKnere%2BulFSZAFE%3D&reserved=0 (Endorsements on the main page and comments on the talk page are welcome).
We really hope that the project gets accepted, so we can deploy the technologies behind DBpedia to the Wikiverse, e.g. we found over 900k triples/statements with references in the English Wikipedia's Infoboxes alone.
We still have to do documentation and hosting of the new releases, but then it would indeed be a good time to add the links to DBpedia, if nobody objects. Also some people mentioned that we could load the DBpedia Ontology into Wikidata to provide an alternate class hierarchy. In DBpedia we loaded 5 or 6 classification schemes (Yago, Umbel, etc.), which are useful for different kind of queries.
All the best, Sebastian
On 06.03.2018 18:14, Ettore RIZZA wrote:
Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identities
https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=Bx%2FA%2BPh9nQzNuzrRgRg5dC3s%2BJeKKWNGKUSRguq4Ks4%3D&reserved=0" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to
Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
Wikidata mailing listWikidata@lists.wikimedia.orghttps://lists.wikimedia.org/mailman/listinfo/wikidata https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=009ZtINq4Vn2yyUJCa13auEnej%2FAbLzA%2BIJt1ogzuTg%3D&reserved=0
-- 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 https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdbpedia.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=OravJiJyUy%2FLVYoQ5yNQYU0xDcHFH02%2Bp%2BbDWWECHH0%3D&reserved=0, http://nlp2rdf.org https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fnlp2rdf.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=m1DRusIhPt%2BtHIC7qkzZVvR2ssCaOart8aPamygKRxI%3D&reserved=0, http://linguistics.okfn.org https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Flinguistics.okfn.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=ysbEhRyeB22OtS9R05hjeZXUAGp5gMF3zFtPYSNkknE%3D&reserved=0, https://www.w3.org/community/ld4lt https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.w3.org%2Fcommunity%2Fld4lt&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cr9gVjhIIDJMKyrOFioFOICmwyIui8EqUMdkB6M%2B034%3D&reserved=0 Homepage: http://aksw.org/SebastianHellmann https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Faksw.org%2FSebastianHellmann&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=i7ub%2FNWG6g1iKtDI01T01r%2Fkxuww%2BZbHuuOdM4ZDJJY%3D&reserved=0 Research Group: http://aksw.org https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Faksw.org&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata=9tTgkynNjB2sAwFSWTfQGJD7cPt5vOeVOkTLsRsAjls%3D&reserved=0
Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo%2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata=x1rQozrTo277ACWslPrvu9w86hGDew1RbmyKgvcK%2BfU%3D&reserved=0
Wikidata mailing list Wikidata@lists.wikimedia.org https://nam02.safelinks.protection.outlook.com/?url= https%3A%2F%2Flists.wikimedia.org%2Fmailman%2Flistinfo% 2Fwikidata&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50% 7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991845679&sdata= x1rQozrTo277ACWslPrvu9w86hGDew1RbmyKgvcK%2BfU%3D&reserved=0
Wikidata mailing listWikidata@lists.wikimedia.orghttps://lists.wikimedia.org/mailman/listinfo/wikidata
-- 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
Wikidata mailing list Wikidata@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata
This flow involves human intervention so it is not instant. It can take years.
Arf, yes, this is unfortunately quite a plain and rational argument. Thank you very much for your answer.
2018-03-06 20:26 GMT+01:00 Ettore RIZZA ettorerizza@gmail.com:
If Dbpedia has “same as” then Wikidata doesn’t have to duplicate that
information.... you can ask dbpedia what is same as Q7724
Sebastian Hellman beats me to my question. Perhaps our points of view are different. From mine, which is that of a data consumer and a network enthusiast, the difference between a simple link and two-way links is huge. I mean, links are cheap and linked data is just about links. Instead of a heavy, complex and often empty federated SPAQL query, it would be enough to ask Wikidata to get the information of DBpedia (I think Wikidata is intended to contain one day all the DBpedia entities). Just as one will be able to query Wikidata one day to know the VIAF ID of any writer. I believe that Wikidata is destined to become a data hub of this kind, but maybe I'm wrong.
Best regards,
Ettore Rizza
2018-03-06 20:11 GMT+01:00 Sebastian Hellmann <hellmann@informatik.uni- leipzig.de>:
Hm, now I am also curious and would like to ask the same question as Ettore. What is the policy here?
Viaf has schema.org backlinks, see https://viaf.org/viaf/85312226/rdf.xml
<schema:sameAs rdf:resource="http://www.wikidata.org/entity/Q80" http://www.wikidata.org/entity/Q80/> Then it's ok to duplicate? because it is not owl:sameAs?
All the best, Sebastain
On 06.03.2018 20:01, Magnus Sälgö wrote:
If Dbpedia has “same as” then Wikidata doesn’t have to duplicate that information.... you can ask dbpedia what is same as Q7724
Regards Magnus Sälgö Stockholm, Sweden
6 mars 2018 kl. 19:49 skrev Ettore RIZZA ettorerizza@gmail.com:
First of all, thank you all for your answers.
@Magnus and Thad: it's a bit what I suspected. Since the URL to WorldCat can be rebuilt from the Library of congress authority ID, I guess someone thought it would be a duplicate.
But 1) I'm not sure that there is a 1 to 1 mapping between all Worldcat Identities and the Library of Congress 2) It would be rather strange that a Library of Congress ID would also serve as an ID for a "competitor" (ie OCLC, which maintains Worldcat and VIAF) 3) One would then wonder why Wikipedia provides both links to the Library of Congress Authority ID and Worldcat Identities.
With respect for the fact that Wikidata already contains links to VIAF and that VIAF contains links to Worldcat Identities, this transitivity reasoning could apply to many other Authority IDs, I think.
@Sebastian: Il would be great! I'll follow this project closely, just as I'm already following your papers https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcontent.iospress.com%2Farticles%2Fsemantic-web%2Fsw277&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=R1LeZSVSLmdZ%2FiJh6evIwrukAgtQQhzz7OxrJNL%2FXVg%3D&reserved=0. And it is precisely because I know that there is a desire for "rapprochement" on both sides that I asked why there is absolutely nothing in Wikidata that links to DBpedia (or Yago), whereas DBpedia contains a lot of owl: sameAs to Wikidata. All this must have been discussed somewhere I suppose. Still, I do not even find a property proposal for "DBpedia link".
2018-03-06 18:59 GMT+01:00 Sebastian Hellmann < hellmann@informatik.uni-leipzig.de>:
Hi Ettore,
we just released a very early prototype of the new DBpedia:
http://88.99.242.78/hdt/en_wiki_de_sv_nl_fr-replaced.nt.bz2 https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2F88.99.242.78%2Fhdt%2Fen_wiki_de_sv_nl_fr-replaced.nt.bz2&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=oml9kGY8ikCsVFH0jmSFx3txDjQGyT6lj%2FSxangnIZM%3D&reserved=0
I attached the first 1000 triples. The data is a merge of Wikidata + 5 DBpedias from the 5 largest Wikipedia versions. Overall, there are many issues, but we have a test-driven data engineering process combined with Scrum and biweekly releases, next one is on March 15th. The new IDs are also stable by design.
We discussed how to effectively reuse all technologies we have for Wikidata and also Wikipedia and are applying with this project at the moment: https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/Globa lFactSync https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmeta.wikimedia.org%2Fwiki%2FGrants%3AProject%2FDBpedia%2FGlobalFactSync&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=cOIU%2FCe93h%2Ft4b1PdIDhMJWL%2FZB2XKnere%2BulFSZAFE%3D&reserved=0 (Endorsements on the main page and comments on the talk page are welcome).
We really hope that the project gets accepted, so we can deploy the technologies behind DBpedia to the Wikiverse, e.g. we found over 900k triples/statements with references in the English Wikipedia's Infoboxes alone.
We still have to do documentation and hosting of the new releases, but then it would indeed be a good time to add the links to DBpedia, if nobody objects. Also some people mentioned that we could load the DBpedia Ontology into Wikidata to provide an alternate class hierarchy. In DBpedia we loaded 5 or 6 classification schemes (Yago, Umbel, etc.), which are useful for different kind of queries.
All the best, Sebastian
On 06.03.2018 18:14, Ettore RIZZA wrote:
Dear all,
I asked myself a series of questions about the links between Wikidata and other knowledge/data bases, namely those of OCLC and DBpedia. For example:
- Why Wikidata has no property "Worldcat Identities
https://nam02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fworldcat.org%2Fidentities%2F&data=02%7C01%7C%7Cb20d7c5a98504fcaa29e08d583930f50%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559589991689411&sdata=Bx%2FA%2BPh9nQzNuzrRgRg5dC3s%2BJeKKWNGKUSRguq4Ks4%3D&reserved=0" while the English edition of Wikipedia systematically mentions this identity (when it exists) in its section "Autorithy control" ?
- Why do VIAF links to all editions of Wikipedia, but not (simply) to
Wikidata ?
- Why is there no link to DBpedia when the opposite is true ?
These questions may seem very different from each other, but they ultimately concern a common subject and are all very basic. I suspect they had to be discussed somewhere, maybe at the dawn of Wikidata. However, I find nothing in the archives of this Newsletter, nor in the discussions on Wikidata.
Could someone point me to some documentation on these issues ?
Cheers,
Ettore Rizza
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-- All the best, Sebastian Hellmann
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-- 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
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Hi Ettore,
On 06.03.2018 19:48, Ettore RIZZA wrote:
@Sebastian: Il would be great! I'll follow this project closely, just as I'm already following your papers https://content.iospress.com/articles/semantic-web/sw277. And it is precisely because I know that there is a desire for "rapprochement" on both sides that I asked why there is absolutely nothing in Wikidata that links to DBpedia (or Yago), whereas DBpedia contains a lot of owl: sameAs to Wikidata. All this must have been discussed somewhere I suppose. Still, I do not even find a property proposal for "DBpedia link".
Thanks, Ali (who volunteered to do biweekly Wikidata-DBpedia extractions) and Dimitris should get most of the credit for the paper.
We as DBpedia would really like to contribute more to Wikidata, but all developers are busy with coding DBpedia improvements and the community is more concerned with their own interests and we didn't find a volunteer who committed to focusing on closing the gaps between the projects (it is quite a lot of work, but worth it). Hence the application for the developer in GlobalFactSync[1] as we really need someone to focus on porting technologies to Wikimedia and transition the core data from Wikipedia to Wikidata via DBpedia as a transparent layer.
[1] https://meta.wikimedia.org/wiki/Grants:Project/DBpedia/GlobalFactSync