Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente Prochaine révision Les deux révisions suivantes | ||
thatcamp_2014:requete_dbpedia [2014/08/30 23:06] Francesco Beretta |
thatcamp_2014:requete_dbpedia [2014/08/31 11:25] Francesco Beretta [Nombre d'universités dans dbpedia live] |
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Ligne 12: | Ligne 12: | ||
</code> | </code> | ||
+ | ===== Nombre d'universités dans dbpedia live ===== | ||
+ | [31.08.2014} Résultat: 4303 | ||
<code> | <code> | ||
- | select distinct * | + | PREFIX dbpedia-owl: <http://dbpedia.org/ontology/> |
- | where { | + | PREFIX dbpedia: <http://dbpedia.org/resource/> |
- | ?s dbpprop:type dbpedia:Public_university. | + | PREFIX dbpprop: <http://dbpedia.org/property/> |
- | ?s dbpprop:city ?city | + | |
- | ?city dbpedia-owl:type dbpedia:City | + | |
- | # optional {?s dbpprop:city ?city} | + | SELECT (count(*) AS ?nombre) |
- | # optional {?s georss:point ?localisation} | + | WHERE |
+ | { SELECT DISTINCT * | ||
+ | WHERE | ||
+ | { SERVICE <http://dbpedia-live.openlinksw.com/sparql> | ||
+ | { ?s dbpprop:type dbpedia:Public_university} | ||
+ | } | ||
+ | } | ||
+ | </code> | ||
- | } | + | |
- | limit 20 | + | [31.08.2014} Résultat: 4317 – vérifier pourquoi il y en a plus |
+ | |||
+ | <code> | ||
+ | PREFIX dbpedia-owl: <http://dbpedia.org/ontology/> | ||
+ | PREFIX dbpedia: <http://dbpedia.org/resource/> | ||
+ | PREFIX dbpprop: <http://dbpedia.org/property/> | ||
+ | |||
+ | SELECT (count(*) AS ?nombre) | ||
+ | WHERE | ||
+ | { SELECT DISTINCT * | ||
+ | WHERE | ||
+ | { SERVICE <http://dbpedia-live.openlinksw.com/sparql> | ||
+ | { ?s dbpprop:type dbpedia:Public_university | ||
+ | OPTIONAL | ||
+ | { ?s dbpprop:city ?city | ||
+ | { ?city dbpedia-owl:type dbpedia:City } | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | } | ||
</code> | </code> | ||
+ | |||
+ | |||
+ | ===== | ||
+ | Production de données ===== | ||
+ | |||
+ | <code> | ||
+ | PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> | ||
+ | PREFIX dbpedia-owl: <http://dbpedia.org/ontology/> | ||
+ | PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> | ||
+ | PREFIX dbpedia: <http://dbpedia.org/resource/> | ||
+ | PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> | ||
+ | PREFIX dbpprop: <http://dbpedia.org/property/> | ||
+ | |||
+ | SELECT * | ||
+ | WHERE | ||
+ | { SELECT DISTINCT ?s (strafter(str(?s), "http://dbpedia.org/resource/") AS ?id_name) ?name (xsd:float(strbefore(?point, " ")) AS ?lat) (xsd:float(strafter(?point, " ")) AS ?long) (max(?nombre_etudiants) AS ?nombre) | ||
+ | WHERE | ||
+ | { SERVICE <http://dbpedia-live.openlinksw.com/sparql> | ||
+ | { ?s dbpprop:type dbpedia:Public_university . | ||
+ | ?s <http://www.georss.org/georss/point> ?point | ||
+ | OPTIONAL | ||
+ | { ?s dbpprop:name ?name } | ||
+ | OPTIONAL | ||
+ | { { SELECT * | ||
+ | WHERE | ||
+ | { ?s dbpprop:students ?nombre_etudiants } | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | } | ||
+ | GROUP BY ?s ?point ?name | ||
+ | LIMIT 10 | ||
+ | } | ||
+ | </code> | ||
+ | ===== Jointure avec GEONAMES ===== | ||
+ | En cours de test | ||
+ | <code> | ||
+ | PREFIX dbpedia-owl: <http://dbpedia.org/ontology/> | ||
+ | PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> | ||
+ | PREFIX dbpedia: <http://dbpedia.org/resource/> | ||
+ | PREFIX dbpprop: <http://dbpedia.org/property/> | ||
+ | |||
+ | SELECT * # (count(*) AS ?nombre) | ||
+ | WHERE | ||
+ | { SELECT DISTINCT * | ||
+ | WHERE | ||
+ | { SERVICE <http://dbpedia-live.openlinksw.com/sparql> | ||
+ | {SELECT * WHERE { ?s dbpprop:type dbpedia:Public_university . | ||
+ | ?s dbpprop:city ?city . | ||
+ | ?city dbpedia-owl:type dbpedia:City . | ||
+ | ?city <http://www.w3.org/2002/07/owl#sameAs> ?geonames | ||
+ | |||
+ | } | ||
+ | limit 100} | ||
+ | SERVICE <http://factforge.net/sparql> | ||
+ | { SELECT * WHERE { ?geonames geo:lat ?lat . | ||
+ | ?geonames geo:long ?lon} | ||
+ | limit 1 | ||
+ | } | ||
+ | } | ||
+ | }</code> |