On Wednesday 20 September 2017, Frederik Ramm wrote: > > Does that mean that the original plan of "fetching" (dare I say > importing) 200k Wikidata links through automated connections from > existing Wikipedia links is (a) dangerous because you can easily > obtain a reference to something totally different, or (b) no problem > because it is *to be expected* that an object's Wikipedia and > Wikidata links point to different things an hence the import wouldn't > introduce "errors" per se?
It all depends on how you use the data. I think adding the wikidata tags is fine *because* i regard them as simple references to related features but if you'd insist on the idea that the OSM feature and the wikidata item refer to the same real world feature then inferring such an identity from an existing wikipedia tag is even more problematic - because the wikipedia tag was almost certainly not originally verified to refer to exactly the same concept as the OSM object. Also keep in mind that both the OSM features and the wikidata items evolve over time and not every edit made in OSM (like extending the area of a forest polygon to include some additional tree covered area) is necessarily verified to still justify having the wikidata reference. What will inevitably happen if you automatically add wikidata tags is that existing errors in either OSM (in form of incorrect wikipedia tags) or in wikidata (in form of incorrect connections to wikipedia articles) will get duplicated. -- Christoph Hormann http://www.imagico.de/ _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
