Hoi,
I cannot parse this ..
Thanks,
GerardM
On 19 August 2014 11:43, Thomas Douillard <thomas.douillard(a)gmail.com>
wrote:
Note that in Wikidata we are developping methods and
tools to class items
in « classes », which in short are sets of real world things or events. In
languages like the w3c language and standards OWL2
<https://en.wikipedia.org/wiki/OWL2>. In this language you can assign a
class to an element (a media in the common case) to a class (that can be
seen as a better defined category) either by creating a statement « this
media belongs to that category » (in Wikidata this is done by using the «
instance of » property <https://www.wikidata.org/wiki/Property:P31>) or
by associating a so called «class expression» in OWL (an analog of a query
but more powerful) Then in OWL any item who satisfy the criteria of the
query or class expression associated to a class belongs to that class
without stating it explicitely. In short, the possibility to assign an
arbitrary class to an item when a query is not enough will also be possible
with just a metadata repository, we may in the future even be able to mix
these two ways to class medias.
2014-08-19 10:14 GMT+02:00 James Heald <j.heald(a)ucl.ac.uk>uk>:
Also there might be queries one might want to run on the categories, which
would be another reason to include them in
Commons Wikibase.
-- J.
On 19/08/2014 07:00, Gerard Meijssen wrote:
Hoi,
I know the categories in Commons exist. I also know that you do not have
to
add categories when an image is uploaded. Many people do not consider the
categories because they are just there and are not easy nor obvious
without
a long study.
They are there and they evolve. When the "community" finds that they are
no
longer useful, there will be others who still want to work on it. They
can,
it is a harmless occupation. Why would we consider removing category
structures as long as someone cares about them ??
Thanks,
GerardM
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