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> no entity reconciliation On the other hand there are still duplicates. I queried Wikidata once and every date result was duplicated because they existed in a

> no entity reconciliation On the other hand there are still duplicates. I queried Wikidata once and every date result was duplicated because they existed in a slightly different format (7-7-2000 vs 07-07-2000; both were declared as xsd:date). Very "semantic" and powerful data model indeed. In fact the technology should be renamed stringly typed web, because this is what it really is.

vrandecic 5y ago
That would be a bug and should not be the case. I just tried it and couldn't replicate it. There is no difference between 7-7-2000 and 07-07-2000 in xsd, and neither in the SPARQL query endpoint. Here are the people in Wikidata born on 07-07-2000: https://w.wiki/3wrj https://w.wiki/3wrj And here the people born on 7-7-2000: https://w.wiki/3wrk https://w.wiki/3wrk The results are identical. (This doesn't mean we have no duplicates at all in Wikidata - the post actually mentions five discovered duplicates within Queen Elizabeth II's ancestors. But these are entities, not within the datatypes)
- valexiev 5y ago
  IMHO WD SPARQL should reject invalid literals: https://phabricator.wikimedia.org/T253718 https://phabricator.wikimedia.org/T253718