Thanks Matthias, that's a pity. Your suggestion relies on the effective characterization of the item that, at this writing time, is pretty poor for my interest. Could it be an idea to download all the "scholary articles", locally select for the keyword of interest (e.g. "microgravity") and set the property P921 for all of them ? Quickstatements may be helpful for the last step, any suggestions for other tools ?
Thanks Fabrizio Il giorno ven 14 dic 2018 alle ore 22:16 Matthias Erfurth <[email protected]> ha scritto: > Hi Fabrizio, > unfortunately you can't fulltext search all the scholarly articles > <https://www.wikidata.org/wiki/Q13442814> , you should better work with > indexed properties, so > you can query for other articles with microgravity as main subject ... > With the ajax based wikidata search > > SELECT ?item > WHERE { > ?item wdt:P31 wd:Q13442814; > wdt:P921 wd:Q48655. > } > > Best regards, > > ciao matthias > > > *Gesendet:* Freitag, 14. Dezember 2018 um 18:55 Uhr > *Von:* "Fabrizio Carrai" <[email protected]> > *An:* "Discussion list for the Wikidata project" < > [email protected]> > *Betreff:* Re: [Wikidata] Query on scholarly article fails > Thanks again to Ettore, but I immediately found another timeout problem > when I just added a FILTER to find all the articles with the word "biokis" > in the title > > SELECT ?istanza_di ?instanza_diLabel WHERE { > ?istanza_di wdt:P31 wd:Q13442814. > ?istanza_di rdfs:label ?instanza_diLabel. > FILTER((LANG(?instanza_diLabel)) = "en"). > FILTER(CONTAINS(LCASE(?instanza_diLabel), "biokis")) > } > LIMIT 100 > > At least one article should be returned: > https://www.wikidata.org/wiki/Q57202937 > but I got a timeout. > > Thanks to anybody that can help > > Fabrizio > > > Il giorno ven 14 dic 2018 alle ore 10:12 Ettore RIZZA < > [email protected]> ha scritto: > >> Hello Fabrizio, >> >> It seems that the problem comes from SERVICE wikibase:label. As said in >> another discussion, the query executes in less than one second if you rewrite >> it in this way >> <https://query.wikidata.org/#SELECT%20%3Fistanza_di%20%3Finstanza_diLabel%20WHERE%20%7B%0A%20%20%3Fistanza_di%20wdt%3AP31%20wd%3AQ13442814.%0A%20%20%3Fistanza_di%20rdfs%3Alabel%20%3Finstanza_diLabel.%0A%20%20FILTER%28%28LANG%28%3Finstanza_diLabel%29%29%20%3D%20%22en%22%29%0A%7D%0ALIMIT%2010> >> . >> >> Cheers, >> >> Ettore Rizza >> >> Le ven. 14 déc. 2018 à 09:59, Fabrizio Carrai <[email protected]> >> a écrit : >> >>> Hello all, >>> the following query ends with a timeot: >>> >>> SELECT ?istanza_di ?istanza_diLabel WHERE { >>> SERVICE wikibase:label { bd:serviceParam wikibase:language >>> "[AUTO_LANGUAGE],en". } >>> ?istanza_di wdt:P31 wd:Q13442814. >>> } >>> LIMIT 10 >>> >>> Can anybody explain why ? >>> Thanks in advance >>> >>> -- >>> *Fabrizio* >>> _______________________________________________ >>> Wikidata mailing list >>> [email protected] >>> https://lists.wikimedia.org/mailman/listinfo/wikidata >> >> _______________________________________________ >> Wikidata mailing list >> [email protected] >> https://lists.wikimedia.org/mailman/listinfo/wikidata > > > > -- > *Fabrizio* > _______________________________________________ Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata > -- *Fabrizio*
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