Wikidata is a wiki like any other, so you can just click "What links here" on Property:P351 and pick up all items that way
On Fri, Jun 19, 2015 at 9:14 AM, Ricordisamoa <[email protected]> wrote: > Just ask WDQ for a list of item ids, then pass them to the live API > <https://www.wikidata.org/w/api.php?action=help&modules=wbgetentities>. > You may miss some recently edited items, but at least you wouldn't base > your edits upon outdated revisions (and wbeditentity > <https://www.wikidata.org/w/api.php?action=help&modules=wbeditentity>'s > "baserevid" argument completely eliminates the risk). > > Il 19/06/2015 00:10, Andra Waagmeester ha scritto: > > Indeed the ultimate truth source is on the wikidata site it self. However, > I am not aware of a way to query the Wikidata site for a list of items > fitting a certain condition (e.g. all Wikidata items containing a claim > with the NCBI Entrez Gene (P351) property.) > > It is here that I need to rely on WDQ (and WDQS) and potentially risk > missing existing items due to delays in which WDQ (and WDAS) gets updated. > > I would like to know if I could rely on a given time frame - being it > seconds, hours, days, or one week). > > I currently assume a delay of a week, but I don't know how accurate this > assumption is. > > Regards, > > > > On Thu, Jun 18, 2015 at 10:23 PM, Stas Malyshev <[email protected]> > wrote: > >> Hi! >> >> > The way that updates work *in all systems* (polling small lists of >> > recent changes at intervals and hoping that this leads to a complete >> > change history), it seems quite possible that such systems will >> > sometimes miss an update, at least in the long run and under varying >> > conditions (high server load, network troubles, update script down for a >> > while, whatever). Insufficient update frequency is maybe not the biggest >> > problem here (it should be in the range of one to a few minutes for all >> > of the services). >> >> Very important point with which I agree - it is completely possible that >> update polling misses an update, WDQS is no exception and it usually >> does not treat it as a problem, as the next update can fill up the >> missed one. However the ultimate truth source is on the wikidata site >> only. Beware of the caches though - if you ask for the same data on the >> same URL twice, I think you can get the same result even if the >> underlying data changed in the meantime. >> >> -- >> Stas Malyshev >> [email protected] >> >> _______________________________________________ >> Wikidata mailing list >> [email protected] >> https://lists.wikimedia.org/mailman/listinfo/wikidata >> > > > > _______________________________________________ > Wikidata mailing > [email protected]https://lists.wikimedia.org/mailman/listinfo/wikidata > > > > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata > >
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