Thanks, Stas, for the clarification. d
*David Lowe | The New York Public Library**Specialist II, Photography Collection* *Photographers' Identities Catalog <http://pic.nypl.org>* On Tue, Feb 7, 2017 at 2:41 PM, Stas Malyshev <[email protected]> wrote: > Hi! > > > I've made a lot of good use of Wikidata for harvesting information about > > names in our database, including specific birth & death dates. But, when > > a specific date isn't known, & only a year is known, WD records that as > > January 1 of that year. I have to throw away any date that is January 1, > > as I can't be sure if it is accurate. I know there is a (rather awkward) > > way of recording "circa" for dates, but is there some identifier for an > > unknown date within the year of ____ that can be used? > > Well, in Wikidata itself there is a precision accompanying the date - if > the precision is "years", then you know you can discard the day. > > In SPARQL database, the short time value[1] does not carry precision, so > unfortunately there's no way to know from that value, but if you use > full wikibase:Time value, again, you can use wikibase:timePrecision to > know if the date is accurate or just a placeholder. > > [1] https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Time > -- > Stas Malyshev > [email protected] > > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata >
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