Re: [Wikidata] Virtuoso hosted Wikidata Instance

[Kingsley Idehen]

On 8/14/19 4:35 PM, Egon Willighagen wrote:
> On Wed, Aug 14, 2019 at 1:10 AM Kingsley Idehen  
> wrote:
>> We have loaded Wikidata into a Virtuoso instance accessible via SPARQL [1]. 
>> One benefit is helping to understand Wikidata using our Faceted Browsing 
>> Interface for Entity Relationship Types [2][3].
> Awesome!
>
> I've started seeing how much of Scholia can run on it, and opened a
> ticket: https://github.com/fnielsen/scholia/issues/809 It's great the
> Wikidata namespaces are loaded. I only had to add the 'bd' prefix to
> the Scholia SPARQL. And, the sections that use the WDQS graphical
> views, obviously cannot use the VOS instance yet.
>
> So, do you plan to run a WDQS instance on top of your EP? :)
>
> Egon
>

I am hoping that WDQS would be encouraged to be more loosely-coupled
based on SPARQL as the open standard for its data access etc..

There are lots of tools from this community that will benefit immensely
from loose-coupling, IMHO.

We need to demonstrate to the world that the LOD Cloud is its most
powerful and accessible Knowledge Graph :)

-- 
Regards,

Kingsley Idehen   
Founder & CEO 
OpenLink Software   
Home Page: http://www.openlinksw.com
Community Support: https://community.openlinksw.com
Weblogs (Blogs):
Company Blog: https://medium.com/openlink-software-blog
Virtuoso Blog: https://medium.com/virtuoso-blog
Data Access Drivers Blog: 
https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers

Personal Weblogs (Blogs):
Medium Blog: https://medium.com/@kidehen
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  http://kidehen.blogspot.com

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: 
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Re: [Wikidata] Virtuoso hosted Wikidata Instance

[Egon Willighagen]

On Wed, Aug 14, 2019 at 1:10 AM Kingsley Idehen  wrote:
> We have loaded Wikidata into a Virtuoso instance accessible via SPARQL [1]. 
> One benefit is helping to understand Wikidata using our Faceted Browsing 
> Interface for Entity Relationship Types [2][3].

Awesome!

I've started seeing how much of Scholia can run on it, and opened a
ticket: https://github.com/fnielsen/scholia/issues/809 It's great the
Wikidata namespaces are loaded. I only had to add the 'bd' prefix to
the Scholia SPARQL. And, the sections that use the WDQS graphical
views, obviously cannot use the VOS instance yet.

So, do you plan to run a WDQS instance on top of your EP? :)

Egon

-- 
Hi, do you like citation networks? Already 51% of all citations are
available available for innovative new uses. Join me in asking the
American Chemical Society to join the Initiative for Open Citations
too. SpringerNature, the RSC and many others already did.

-
E.L. Willighagen
Department of Bioinformatics - BiGCaT
Maastricht University (http://www.bigcat.unimaas.nl/)
Homepage: http://egonw.github.com/
Blog: http://chem-bla-ics.blogspot.com/
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ORCID: -0001-7542-0286
ImpactStory: https://impactstory.org/u/egonwillighagen

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Re: [Wikidata] Virtuoso hosted Wikidata Instance

[Kingsley Idehen]

On 8/14/19 6:07 AM, Jérémie Roquet wrote:
> Hi!
>
> Le mer. 14 août 2019 à 01:10, Kingsley Idehen  a 
> écrit :
>> We have loaded Wikidata into a Virtuoso instance accessible via SPARQL [1]. 
>> One benefit is helping to understand Wikidata using our Faceted Browsing 
>> Interface for Entity Relationship Types [2][3].
> That's great news, thanks!


Hi Jérémie,


You are welcome!  See responses below.


>
>> Feedback always welcome too :)
> So, I've eagerly tried a very simple SPARQL query with a huge result
> set, the complete version of which¹ I've known for several years to
> timeout in both the official Blazegraph instance and a personal
> Blazegraph instance with supposedly all time limits removed:
>
>   PREFIX wd: 
>   PREFIX wdt: 
>
>   SELECT ?person WHERE {
> ?person wdt:P31 wd:Q5
>   }
>
> … and while the Virtuoso instance manages to answer pretty quickly, it
> seems that it's cutting the result set at 100k triples. Is it the
> expected behavior? 


Yes.


> If so, I suggest you show that in the UI because
> apart from the improbable round number of triples, it's not obvious
> that the result set is incomplete (in this case, the LDF endpoint
> tells us that there should be around 5,4M triples²).
>
> Thanks again!
>
> ¹ ie. using the wikibase:label service
> ² 
> https://query.wikidata.org/bigdata/ldf?subject=&predicate=wdt%3AP31&object=wd%3AQ5


If you open up your browser's inspector you will see:

cache-control: max-age=3600
content-encoding: gzip
content-type: text/html; charset=UTF-8
date: Wed, 14 Aug 2019 16:47:47 GMT
expires: Wed, 14 Aug 2019 17:47:47 GMT
server: Virtuoso/08.03.3315 (Linux) x86_64-generic-linux-glibc25  VDB
status: 200
strict-transport-security: max-age=15768000
vary: Accept-Encoding
x-sparql-default-graph: http://www.wikidata.org/
*x-sparql-maxrows:* 10


In addition, note that Virtuoso has an "Anytime Query" feature [1][2]
that it uses to drive a "Fair Use" policy that ensures an endpoint is
able to handle a cocktail of query types from users and bots. This is
also how we handle DBpedia and DBpedia-Live instances [3]. Naturally,
HTTP response metadata will also inform you when this kicks in.


[1] http://docs.openlinksw.com/virtuoso/anytimequeries/

[2]
http://vos.openlinksw.com/owiki/wiki/VOS/VirtTipsAndTricksAnytimeSPARQLQuery

[3] https://wiki.dbpedia.org/public-sparql-endpoint


-- 
Regards,

Kingsley Idehen   
Founder & CEO 
OpenLink Software   
Home Page: http://www.openlinksw.com
Community Support: https://community.openlinksw.com
Weblogs (Blogs):
Company Blog: https://medium.com/openlink-software-blog
Virtuoso Blog: https://medium.com/virtuoso-blog
Data Access Drivers Blog: 
https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers

Personal Weblogs (Blogs):
Medium Blog: https://medium.com/@kidehen
Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
  http://kidehen.blogspot.com

Profile Pages:
Pinterest: https://www.pinterest.com/kidehen/
Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
Twitter: https://twitter.com/kidehen
Google+: https://plus.google.com/+KingsleyIdehen/about
LinkedIn: http://www.linkedin.com/in/kidehen

Web Identities (WebID):
Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
: 
http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this



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Re: [Wikidata] Ontology in XML

[Manzoor Ali]

Thanks. actually i need the ontology which have all the predicate defined.

On Mon, 12 Aug 2019 at 22:23, Denny Vrandečić  wrote:

> Maybe you mean this file:
>
>
> https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/Wikibase/+/master/docs/ontology.owl
>
>
> Cheers,
> Denny
>
> On Sun, Aug 11, 2019 at 7:20 AM Sebastian Hellmann <
> hellm...@informatik.uni-leipzig.de> wrote:
>
>> Hi Ali, all,
>>
>> we have this dataset:
>> https://databus.dbpedia.org/dbpedia/wikidata/instance-types/2018.10.20
>> and an ontology with some Wikidata links:
>> https://databus.dbpedia.org/dbpedia/ontology/dbo-snapshots/2019.02.21T08.00.00Z
>>
>> The owl version is XML.
>>
>> It is true that there is no intention to make a Wikidata ontology.
>> Nevertheless, we were wondering whether Wikidata couldn't just load
>> DBpedia's model. We can bot import it, easily. I am sure this would help to
>> query Wikidata.
>>
>> Cleaning up the P31's and P279's is quite tedious, if done individually.
>>
>> -- Sebastian
>>
>>
>>
>> On 10.08.19 19:18, Marijane White wrote:
>>
>> Perhaps someone can correct me if I am wrong, but I am under the
>> impression that such a thing doesn’t exist and that Wikidata’s models are
>> intentionally not documented as an ontology.  I gathered this understanding
>> from Bob DuCharme’s blog post about extracting RDF models from Wikidata
>> with SPARQL queries:
>> http://www.bobdc.com/blog/extracting-rdf-data-models-fro/
>>
>>
>>
>>
>>
>> *Marijane White, M.S.L.I.S.*
>>
>> Data Librarian, Assistant Professor
>>
>> Oregon Health & Science University Library
>>
>>
>>
>> *Phone*: 503.494.3484
>>
>> *Email*: whi...@ohsu.edu
>>
>> *ORCiD*: https://orcid.org/-0001-5059-4132
>>
>>
>>
>>
>>
>> *From: *Wikidata 
>>  on behalf of Manzoor Ali
>>  
>> *Reply-To: *Discussion list for the Wikidata project
>>  
>> *Date: *Saturday, August 10, 2019 at 2:38 AM
>> *To: *"wikidata@lists.wikimedia.org" 
>>  
>> *Subject: *[Wikidata] Ontology in XML
>>
>>
>>
>>
>> Hello Wikidata,
>>
>> Sorry in advance if I am using wrong mail. I need Wikidata ontology in
>> XML form. can you please tell me that from which link I can download it.
>> Thanks in advance.
>>
>>
>>
>> ___
>> 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
>> 
>> Homepage: http://aksw.org/SebastianHellmann
>> Research Group: http://aksw.org
>> ___
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>> https://lists.wikimedia.org/mailman/listinfo/wikidata
>>
>

-- 

Manzoor Ali
about.me/manxoorali

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[Wikidata] {{cite Q|Q...}} in languages other than English?

[Spencer Graves]

Hello:


  What needs to happen so someone can use {{cite Q|Q...}} in 
languages other than English, especially in es.wikipedia.org?



  I translated the Wikipedia article on Julia Cagé from French into 
English.  I started to do it into Spanish but stopped, because I could 
not figure out how to use a Wikicite in Spanish.



  Thanks,
  Spencer Graves
aka DavidMCEddy


p.s.  I'm currently at Wikimania.  I currently have German mobile phone 
number 004915739830186.  After August 20, I'll have US cell number 
408-655-4567.



 Forwarded Message 
Subject:Julia Cagé in spanish wikipedia
Date:   Wed, 14 Aug 2019 14:12:14 +0200
From:   Adrián Estévez Iglesias 
To: spencer.gra...@effectivedefense.org



This  
is the user-talk page of User:Alelapenya, who deleted Julia Cagé's 
article  in spanish language.

Write him, and ask him if he can retrieve the text.

Cheers
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Re: [Wikidata] Virtuoso hosted Wikidata Instance

[Jérémie Roquet]

Hi!

Le mer. 14 août 2019 à 01:10, Kingsley Idehen  a écrit :
> We have loaded Wikidata into a Virtuoso instance accessible via SPARQL [1]. 
> One benefit is helping to understand Wikidata using our Faceted Browsing 
> Interface for Entity Relationship Types [2][3].

That's great news, thanks!

> Feedback always welcome too :)

So, I've eagerly tried a very simple SPARQL query with a huge result
set, the complete version of which¹ I've known for several years to
timeout in both the official Blazegraph instance and a personal
Blazegraph instance with supposedly all time limits removed:

  PREFIX wd: 
  PREFIX wdt: 

  SELECT ?person WHERE {
?person wdt:P31 wd:Q5
  }

… and while the Virtuoso instance manages to answer pretty quickly, it
seems that it's cutting the result set at 100k triples. Is it the
expected behavior? If so, I suggest you show that in the UI because
apart from the improbable round number of triples, it's not obvious
that the result set is incomplete (in this case, the LDF endpoint
tells us that there should be around 5,4M triples²).

Thanks again!

¹ ie. using the wikibase:label service
² 
https://query.wikidata.org/bigdata/ldf?subject=&predicate=wdt%3AP31&object=wd%3AQ5

-- 
Jérémie

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