Class mappings are almost complete Kingsley. We were trying to get
Wikidata to the point where it is easy for folks to do trivial queries
right inside WDQS as part of WD Goals for 2016.
Thad,
Here is a post (brought up to date in last day) that demonstrates
owl:equivalentClass reasoning and inference. Once I have a link to the
new mappings I will integrate into this demo.
Note, this particular LOD Cloud Cache instance has 30 Billion+ triples
against which the owl:equivalentClass inference is being applied, at
query evaluation time.
[1]
On Sat, Oct 8, 2016, 2:38 PM Kingsley Idehen <kidehen(a)openlinksw.com
<mailto:kidehen@openlinksw.com>> wrote:
On 10/6/16 2:57 PM, Thad Guidry wrote:
Hello team :)
So while I'm helping with the Wikidata -
Schema.org mappings, a
request came in to expose subcategories of an existing Wikipedia
category.
For example, say I start with this
topic:
https://www.wikidata.org/wiki/Q27119725 Parking facilities
The topic's main category is shown as "Category:Parking
facilities" and that has links to Wikipedia, specifically a
Wikipedia category link, and where the WP category page has
subcategories that I would like to expose somehow in whichever
way is *easiest* currently with our tools, apis, etc.
Can it all be done in SPARQL against some services that already
expose WP subcategories given a specific category ? Or is there
an API that does this already ? other tools that might expose WP
categories ?
The IDEAL GOAL is to query 'equivalent class' =
schema.org/ParkingFacility <http://schema.org/ParkingFacility>
and get back the WP categories *in one shot or query or api call.*
http://schema.org/ParkingFacility
*
Parking facilities in India
<https://en.wikipedia.org/wiki/Category:Parking_facilities_in_India>
*
Parking facilities in the United States
<https://en.wikipedia.org/wiki/Category:Parking_facilities_in_the_United_States>
*
Aircraft hangars
<https://en.wikipedia.org/wiki/Category:Aircraft_hangars>
*
Garages (parking)
<https://en.wikipedia.org/wiki/Category:Garages_%28parking%29>
*
Railway depots
<https://en.wikipedia.org/wiki/Category:Railway_depots>
Any gurus ?
Hi Thad,
If there are owl:equivalentClass mappings in some Linked Data
Space, and the SPARQL service associated with said Data Space
supports owl:equivalentClass reasoning, then the answer to your
question is yes.
What unknown right now is the class mappings between Wikidata and
Schema.org. If a dump of those exist, the rest is trivial :)
--
Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software (Home Page:
http://www.openlinksw.com)
Weblogs (Blogs):
Legacy Blog:
http://www.openlinksw.com/blog/~kidehen/
<http://www.openlinksw.com/blog/%7Ekidehen/>
Blogspot Blog:
http://kidehen.blogspot.com
Medium Blog:
https://medium.com/@kidehen
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/dataspace/person/kidehen#this
:
http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
_______________________________________________
Wikidata mailing list
Wikidata(a)lists.wikimedia.org <mailto:Wikidata@lists.wikimedia.org>
https://lists.wikimedia.org/mailman/listinfo/wikidata
_______________________________________________
Wikidata mailing list
Wikidata(a)lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/wikidata
--
Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software (Home Page: