Hi Osma, re. adding missing items, I've made good experiences with creating input files for Quickstatements2 (see https://github.com/zbw/repec-ras/blob/master/bin/create_missing_wikidata.pl). I've discussed how to best do this in the Wikidata Project Chat before, and received valuable advice. (https://www.wikidata.org/wiki/Wikidata:Project_chat/Archive/2017/05#Source_statements_for_items_syntesized_from_authorities_-_recommendations.3F)
Feel free to ask for further information, and all the best, Joachim > -----Ursprüngliche Nachricht----- > Von: Wikidata [mailto:[email protected]] Im Auftrag von > Osma Suominen > Gesendet: Montag, 21. August 2017 11:07 > An: Discussion list for the Wikidata project. > Betreff: [Wikidata] Some Mix'n'match mappings not stored in Wikidata? > > Hi, > > We're more than halfway through mapping YSO places to Wikidata. Most of > the remaining are places that don't exist in Wikidata, and adding them is > quite > labor-intensive so we will have to consider our strategy. > > Anyway, I did some checking of what remains unmapped and noticed a > potential problem: some mappings for places that we have mapped using > Mix'n'match have not actually been stored in Wikidata. For example Q36 > Poland ("Puola" in YSO Places) is such a case. In Mix'n'match it is shown as > manually matched (see attached screenshot), but in Wikidata the > corresponding YSO ID property doesn't actually exist for the entity. I checked > the change history of the Q36 entity and couldn't find anything relevant > there, > so it seems that the mapping was never stored in Wikidata. Maybe there was a > transient error of some kind? > > Another such case was Q1754 Stockholm ("Tukholma" in YSO places). But for > that one we removed the existing mapping in Mix'n'match and set it again, and > now it is properly stored in Wikidata. > > Mix'n'match currently reports 4228 mappings for YSO places, while a SPARQL > query for the Wikidata endpoint returns 4221 such mappings. So I suspect that > this only affects a small number of entities. > > Is it possible to compare the Mix'n'match mappings with what actually exists > in > Wikidata, and somehow re-sync them? Or just to get the mappings out from > Mix'n'match and compare them with what exists in Wikidata, so that the few > missing mappings may be added there manually? > > Thanks, > Osma > > > -- > Osma Suominen > D.Sc. (Tech), Information Systems Specialist National Library of Finland P.O. > Box > 26 (Kaikukatu 4) > 00014 HELSINGIN YLIOPISTO > Tel. +358 50 3199529 > [email protected] > http://www.nationallibrary.fi _______________________________________________ Wikidata mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata
