[Tagging] Part/whole confusion with Wikidata tag, and the need for enveloping parts into a whole

[peterkrauss]

Em 2018-08-06 20:46, François Lacombe escreveu:
> Hi Peterkrauss,
> 

Thanks François, important topics...

> I second the need you mention of a relation in a whole.
> Wikidata references should be unique as possible in the db.

It seems the basic premise,
   "Wikidata references should be unique as possible",
I will use your phrase from here.

There are more cases in of sample-country DE where it is not unique,
https://wiki.openstreetmap.org/wiki/User:Krauss/Wikidata-question2

> 
> Using route or site relations when appropriate is a good solution.

Ok, lets elect the OSM Map Features that are Wikidata-good-solutions

* "type=boundary" (6,525,236 elements)

* "type=route" (30,257,877 elements!) and complements as 
"type=route_master".

* ... more good solutions?


PS: "type=site" was classified with status "abandoned", at 
https://wiki.openstreetmap.org/wiki/Relations/Proposed/Site

> 
> All the best
> 
> François
> 
> 2018-08-06 23:10 GMT+02:00 peterkrauss <peter at openstreetmap.com.br>:
> 
>> Hi,
>> 
>> Seems a commom quality problem of part/whole confusion in the
>> Wikidata attribution or OSM's POI reference... And where there are a
>> need for "enveloping parts into a whole".
>> 
>> Example:
>> 
>> * The railway-whole concept, Anhalt Railway
>> https://www.wikidata.org/wiki/Q319837 [1]
>> 
>> * The railway-parts concept, a fragment of the Anhalt Railway,
>> https://www.openstreetmap.org/way/539934418 [2]
>> 
>> * The error: 197 fragments with the Q319837 concept
>> 
>> * The need: a relation to "envelope Anhalt Railway" as a whole
>> 
>> Details and more examples at
>> https://wiki.openstreetmap.org/wiki/User:Krauss/Wikidata-question1
>> [3]
>> 
>> _______________________________________________
>> Tagging mailing list
>> Tagging at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/tagging [4]
> 
> 
> 
> Links:
> ------
> [1] https://www.wikidata.org/wiki/Q319837
> [2] https://www.openstreetmap.org/way/539934418
> [3] https://wiki.openstreetmap.org/wiki/User:Krauss/Wikidata-question1
> [4] https://lists.openstreetmap.org/listinfo/tagging

-- 
Peter Krauss