By the way: the item "demand <https://www.wikidata.org/wiki/Q4402708>" in
Wikidata clearly refers to the economic concept in its broadest and most
abstract sense, while
is defined as "the public
(...) announcement by an organization or person to seek certain types of
goods or services. "
So I would not say they are equivalent classes, but rather something like <
gt;.
As Andra Waagmeetser indicates, could not this be modeled with an external
ID?
On Wed, 26 Sep 2018 at 10:18, Ettore RIZZA <ettorerizza(a)gmail.com> wrote:
Hi,
aggregate demand -- broader external class -->
https://schema.org/Demand
place of devotion -- broader external class
-->
https://schema.org/Place
festival -- broader external class -->
https://schema.org/Event
According to the "creator" of the property narrower external class
(P3950)
<https://www.wikidata.org/wiki/Wikidata:Property_proposal/external_subclass>,
" the reverse (...) is less required because more general classes are
more likely to be included in Wikidata anyway. "
These examples seem to prove him right, since "demand
<https://www.wikidata.org/wiki/Q4402708>" exists in Wikidata and is
already linked to "http://schema.org/Demand" via the equivalent class
property. Same thing for
https://schema.org/Event, already mapped with
event <https://www.wikidata.org/wiki/Q1656682>, or for
https://schema.org/Place , which could be associated with location
<https://www.wikidata.org/wiki/Q17334923> (not sure).
To be clear, I support the creation of "broader external class" because it
can be used with some external vocabularies; I point this out just to make
sure that all existing mapping possibilities are used. :)
Cheers,
Ettore Rizza
On Wed, 26 Sep 2018 at 03:53, Thad Guidry <thadguidry(a)gmail.com> wrote:
Sure, Dan
aggregate demand <https://www.wikidata.org/wiki/Q1801078> -- broader
external class -->
https://schema.org/Demand
place of devotion <https://www.wikidata.org/wiki/Property:P5873> --
broader external class -->
https://schema.org/Place
festival <https://www.wikidata.org/wiki/Q132241> -- broader external
class -->
https://schema.org/Event
Usually we can discover these relationships quite easily with "What links
here" on the GUI and applicable SPARQL queries, but then would like to
apply the
Wikidata->Schema.org mappings when we discover those
relationships can be made. I suck at PHP, so I couldn't build or
contribute to a native application for Wikidata to host that application to
auto discover some of these mappings, but would be happy to assist someone
who could code in PHP to build such application...here's looking at you,
Magnus ? :-)
-Thad
+ThadGuidry <https://plus.google.com/+ThadGuidry>
On Tue, Sep 25, 2018 at 7:07 PM Dan Brickley <danbri(a)google.com> wrote:
On Tue, 25 Sep 2018 at 16:35, Thad Guidry
<thadguidry(a)gmail.com> wrote:
Hi Team !
+Dan Brickley <danbri(a)google.com> +Lydia Pintscher
<lydia.pintscher(a)wikimedia.de>
Schema.org mapping is progressing on every new Weekly Summary "Newest
properties" listing.
That's great ! And thanks to Léa and team for providing the new
properties listing !
What's not great, is many times, we cannot apply a "broader external
class" to map to a
Schema.org Type. This is because "broader concept"
https://www.wikidata.org/wiki/Property:P4900 is constrained to
"qualifiers only and not for use on statements".
We are able to use the existing "narrower external class"
<https://www.wikidata.org/wiki/Property:P3950> , for example like here
on this topic,
https://www.wikidata.org/wiki/Q7406919 , but there is
no "broader external class" property in Wikidata yet from what we see.
It would be *awesome* if someone could advocate for that new property
to help map Wikidata to external vocabularies that have broader concepts
quite often, such as
Schema.org.
Could you give 2-3 specific examples, to help motivate the request, for
folk who're not tracking this work?
Dan
-Thad
> +ThadGuidry <https://plus.google.com/+ThadGuidry>
>
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