[OSM-talk] Adding wikidata tags to the remaining objects with only wikipedia tag
dieterdreist at gmail.com
Thu Sep 21 13:22:16 UTC 2017
2017-09-20 19:07 GMT+02:00 Christoph Hormann <osm at imagico.de>:
> Don't assume such cases are just a freak anomaly - they are not. OSM
> and wikidata are two very different projects which developed in very
> different contexts. Just another example: For most cities and larger
> towns (at least in Germany) there exists an admin_level 6/8 unit with
> the same name and most of these seem to have a single wikidata item
> while in OSM we have two separate concepts for the populated place
> (place=city/town) and the administrative unit (boundary relation with
> boundary=administrative + admin_level=6/8).
This is one of the fields (fundamental to OSM), where wikidata is just a
mess: distinction of geographically localized communities and
administrative territorial entities.
Just a few examples:
https://www.wikidata.org/wiki/Q123705 neighbourhood is a subclass of "human
settlement" and "community". So far so good, but then it is also "part of
https://www.wikidata.org/wiki/Q2983893 quarter is a subclass of
neightbourhood and administrative territorial entity. And it is an instance
of "designation for an administrative territorial entity".
https://www.wikidata.org/wiki/Q486972 human settlement looks OK at a glance
https://www.wikidata.org/wiki/Q515 city is a subclass of "human
settlement", "administrative territorial entity" and "political territorial
entity" (are these AND or OR?).
https://www.wikidata.org/wiki/Q3957 town is a subclass of "human
settlement". It is "part of a country". It was also a subclass of political
territorial entity until today 
https://www.wikidata.org/wiki/Q532 village is a subclass of "rural
settlement" and part of "rural area".
https://www.wikidata.org/wiki/Q14788575 rural settlement is an instance of
"designation for an administrative territorial entity" and a subclass of
Take the town example: it has been for some years a subclass of political
territorial entity and isn't anymore since today. There are tens of
thousands of objects that are all instances of towns according to wikidata.
With one edit all of them have lost their "political territorial entity"
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