On Tuesday 03 October 2017, Frederik Ramm wrote: > Hi, > > seeing that the matter is discussed quite intensively and opinions > vary widely, could we perhaps agree to pause any (large scale) > wikidata edits for a while until more members of our community have > had a chance to form an opinion?
I think that is a good idea. This would also give an opportunity to take the discourse from the exchange of spontaneous opinions and reactions with relatively little substance to a better founded and thought through basis you can reliably form an opinion from. From my side a number of questions exist in the context of wikidata references in OSM where there does not seem to be a reliable answer at the moment although this would be important to form a qualified opinion. In particular: * How many of the wikidata=* tags currently in the database have been added through normal mapping (while adding or significantly modifying the object otherwise) and how many have been added through systematic efforts outside normal mapping? * How many of the X:wikidata=* tags have been added through systematic efforts? Are those derived from matching the existing X=* tags? How many of those also have a wikidata=* tag? * What practical applications exist for the wikidata IDs? And i am not talking about theoretical ideas here but specific uses for practical purposes in actual use, in particular with open source implementation. * To what extent has there been information transferred systematically from Wikidata and Wikipedia to OSM based on wikidata ID references (like adding names in different languages). As others have explained this would be legally problematic and it would be important to know how common this is. * How stable is the identity of what can be found under a certain Wikidata ID. As mentioned there are cases where Wikidata aggregates several concepts under one ID (like an administrative unit and a populated place in case of cities/towns). Would it be possible that this changes? If yes, would the original ID be re-purposed or would it cease to exist? * What is the qualification of Wikidata for having its IDs in OSM (both for wikidata=* and X:wikidata=*)? Is there a particular objective criterion that qualifies it? Would there be other external IDs that would also qualify under these criteria? Is there a limit in the number of different external IDs OSM is going to accept? Also i think it would be of great importance for OSM and a functioning communication in the community to have better documentation of: * systematic wikidata ID addition/editing efforts (there seems to be nothing listed currently on https://wiki.openstreetmap.org/wiki/Category:Automated_edits_log) * tag documentation of the wikidata tags. This needs a lot of improvement. Like: https://wiki.openstreetmap.org/wiki/Key:wikidata does not make clear if these document 1:1 relationships between OSM features and wikidata objects or not and what qualifies a wikidata ID to be 'about a feature'. How does a mapper practically verify if a certain wikidata ID is correct on a certain feature? https://wiki.openstreetmap.org/wiki/Key:brand:wikidata is plain wrong, brand:wikidata=* is not a machine-readable form of brand=*. It in particular needs to tell the mapper what types of wikidata object should be referenced here and how a mapper can find the correct ID for a certain feature. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk