Hi Fabrizio,
unfortunately you can't fulltext search all the scholarly articles , 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.
}
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" <fabrizio.car...@gmail.com>
An: "Discussion list for the Wikidata project" <wikidata@lists.wikimedia.org>
Betreff: Re: [Wikidata] Query on scholarly article fails
Von: "Fabrizio Carrai" <fabrizio.car...@gmail.com>
An: "Discussion list for the Wikidata project" <wikidata@lists.wikimedia.org>
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:
but I got a timeout.
Thanks to anybody that can help
Fabrizio
Il giorno ven 14 dic 2018 alle ore 10:12 Ettore RIZZA <ettoreri...@gmail.com> 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.Cheers,Ettore Rizza_______________________________________________Le ven. 14 déc. 2018 à 09:59, Fabrizio Carrai <fabrizio.car...@gmail.com> 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 10Can anybody explain why ?Thanks in advance--Fabrizio
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