A set of SPARQL examples that are used in different TGX resources
Uses method in: https://www.wikidata.org/wiki/Wikidata:Synia:retraction-index
List of 100 authors with the most retractions.
PREFIX wd: <http://wikidata.org/entity/>
PREFIX wdt: <http://wikidata.org/prop/direct/>
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?author ?authorLabel (COUNT(DISTINCT ?work) AS ?count) WHERE {
{ ?work wdt:P31 wd:Q45182324 . } UNION
{ ?work wdt:P793 wd:Q7316896 . } UNION
{ ?work wdt:P5824 [] . }
?work wdt:P50 ?author .
?citation wdt:P2860 ?work .
SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],mul,en". }
} GROUP BY ?author ?authorLabel
ORDER BY DESC(?count)
LIMIT 100
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v3("?author"):::projected
v4("?citation")
v5("?count")
v2("?work"):::projected
a1((" "))
c9(["bd:serviceParam"]):::iri
c4(["wd:Q7316896"]):::iri
c2(["wd:Q45182324"]):::iri
c11(["#91;AUTO_LANGUAGE#93;,mul,en"]):::literal
subgraph union0[" Union "]
subgraph union0l[" "]
style union0l fill:#abf,stroke-dasharray: 3 3;
subgraph union1[" Union "]
subgraph union1l[" "]
style union1l fill:#abf,stroke-dasharray: 3 3;
v2 --"wdt:P5824"--> a1
end
subgraph union1r[" "]
style union1r fill:#abf,stroke-dasharray: 3 3;
v2 --"wdt:P793"--> c4
end
union1r <== or ==> union1l
end
end
subgraph union0r[" "]
style union0r fill:#abf,stroke-dasharray: 3 3;
v2 --"wdt:P31"--> c2
end
union0r <== or ==> union0l
end
v2 --"wdt:P50"--> v3
v4 --"wdt:P2860"--> v2
subgraph s1["http://wikiba.se/ontology#label"]
style s1 stroke-width:4px;
c9 --"wikibase:language"--> c11
end
bind1[/"count(?work)"/]
v2 --o bind1
bind1 --as--o v5