There is now a relatively small number of OSM nodes and relations remaining, that have wikipedia, but do not have wikidata tags. iD editor already automatically adds wikidata to all new edits, so finishing up the rest automatically seems like a good thing to do, as that will allow many new quality control queries. I would like to auto-add all the corresponding wikidata based on wikipedia, for all remaining objects, using JOSM's "Fetch Wikidata IDs".
This way, we will be able to quickly find all the objects that are problematic with the Wikidata+OSM service. For example, thanks to the community, we already fixed over 600 incorrect links to wiki disambiguations pages, and this will find many more of them. We will be able to fix when things are tagged as people (e.g. wikidata -> person, instead of subject:wikidata -> person), find location errors (e.g. wikidata and OSM point to very different locations, implying that its an incorrect link). Some statistics (I don't plan to add wikipedia tags to those with only wikidata) Query: http://tinyurl.com/yafxe4co has both n 323,745 has both w 137,097 has both r 248,588 no wikidata n 68,330 no wikidata w 131,796 no wikidata r 11,602 no wikipedia n 77,224 no wikipedia w 47,402 no wikipedia r 17,408
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