Ci-dessous, les différences entre deux révisions de la page.
thatcamp_2014:requete_dbpedia [2014/09/01 09:19] Francesco Beretta [Exploration] |
thatcamp_2014:requete_dbpedia [2014/10/29 12:03] |
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- | ====== Données exploitables ====== | ||
- | |||
- | |||
- | ===== Production de données ===== | ||
- | |||
- | [31.08.2014] 3837 lignes si on enlève le limit | ||
- | |||
- | |||
- | <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> | ||
- | |||
- | {{:thatcamp_2014:resultat_corrige.csv.zip|Fichier nettoyé}}, utilisable dans QGIS (séparateur |) | ||
- | |||
- | |||
- | |||
- | ====== Exploration ====== | ||
- | |||
- | |||
- | Point d'accès SPARQL : http://dbpedia-live.openlinksw.com/sparql | ||
- | |||
- | |||
- | |||
- | |||
- | ===== Nombre d'universités dans dbpedia live ===== | ||
- | |||
- | |||
- | |||
- | Chercher toutes les univesités | ||
- | |||
- | <code> | ||
- | select count(*) | ||
- | where{ | ||
- | select distinct * | ||
- | where {?s dbpprop:type dbpedia:Public_university; | ||
- | georss:point ?localisation} | ||
- | #limit 10 | ||
- | } | ||
- | |||
- | </code> | ||
- | |||
- | |||
- | |||
- | |||
- | |||
- | [31.08.2014} Résultat: 4303 | ||
- | <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} | ||
- | } | ||
- | } | ||
- | |||
- | </code> | ||
- | |||
- | |||
- | [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> | ||
- | |||
- | |||
- | |||
- | ===== 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> |