sparql-examples

A set of SPARQL examples that are used in different TGX resources

View the Project on GitHub BiGCAT-UM/sparql-examples

111

rq turtle/ttl

Organization aspect: co author graph

Use at

PREFIX bd: <http://www.bigdata.com/rdf#>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://wikidata.org/entity/>
PREFIX wikibase: <http://wikiba.se/ontology#>
#defaultView:Graph

PREFIX target: <http://www.wikidata.org/entity/Q104785223>

SELECT
  ?author1 ?author1Label ?image1 ?rgb
  ?author2 ?author2Label ?image2 
WITH {
  SELECT
    ?author1 (SAMPLE(?image1_) AS ?image1)
    ?author2 (SAMPLE(?image2_) AS ?image2)
    (SAMPLE(?rgb_) AS ?rgb)
  WHERE {
    target: ^wdt:P361* / ^( wdt:P108 | wdt:P1416 | wdt:P463 ) ?author1 , ?author2 .
    ?work wdt:P50 ?author1 , ?author2 .

    # Only display co-authorship for certain types of documents
    # Journal and conference articles, books, not (yet?) software
    VALUES ?publication_type { wd:Q13442814 wd:Q571 wd:Q26973022 wd:Q17928402 wd:Q947859 wd:Q54670950 }
    FILTER EXISTS { ?work wdt:P31 ?publication_type . }

    # No self-links.
    FILTER (?author1 != ?author2)

    # Images
    OPTIONAL { ?author1 wdt:P18 ?image1_ }
    OPTIONAL { ?author2 wdt:P18 ?image2_ }

    # Coloring of the nodes
    BIND("FFFFFF" AS ?rgb_)
  }
  GROUP BY ?author1 ?author2
} AS %result
WHERE {
  INCLUDE %result
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],mul,en" .
  }
}


graph TD