ORACLEセミナー key

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1 a bit SPARQL advanced

2 (BIND/VALUES) Federated Queries (SERVICE) CONSTRUCT ASK DESCRIBE

3 Turtle prefix WEB API SPAQL

5 p118 SPARQL

6 :taro foaf:knows / foaf:interest?t.?t ^foaf:interest :taro. :taro foaf:interest?t. :taro foaf:interest foaf:publications?t. :taro foaf:knows+?p.

7 2?l?t p3 p2 p1?t ^p3 / ^p2 / p1?l.?t?l

8 : BIND VALUES p116 BIND VALUES

9 BIND?p * (1 -?discount)?price SELECT?title?price {?x ns:price?p.?x ns:discount?discount } BIND (?p * (1 -?discount) AS?price) FILTER(?price < 20)?x dc:title?title.

10 VALUES?book :book1 :book3 SELECT?book?title?price { VALUES?book { :book1 :book3 }?book dc:title?title ; ns:price?price. } WHERE SELECT?book?title?price {?book dc:title?title ; ns:price?price. } VALUES (?book?title) { (UNDEF "SPARQL Tutorial") (:book2 UNDEF) }

11 Federated Queries: SERVICE p114 SPARQL SPARQL

12 SERVICE ( ) SERVICE SELECT?p?o WHERE { SERVICE < { SELECT?p?o WHERE { dbpedia:?p?o.} } }

13 CONSTRUCT p92 RDF RDF SPARQL RDF SERVICE RDF

14 CONSTRUCT SELECT CONSTRUCT CONSTRUCT { :taro :knows?who.?who foaf:birthday?birth_date. } WHERE { :taro :likes?who. SERVICE < { SELECT?who?birth_date WHERE {?who dbpedia-owl:birthdate?birth_date. }}} CONSTRUCT WHERE {?x foaf:name?name }

15 ASK p93 ASK WHERE {?s foaf:knows?o }

16 DESCRIBE p93 RDF IRI dereferenceable

17 DESCRIBE DESCRIBE < > DESCRIBE?who WHERE { :taro faof:knows?who.}

18 dereferenceable $ curl -stderr /dev/null -LH 'Accept: application/rdf+xml' ' <?xml version="1.0" encoding="utf-8"?> <rdf:rdf xmlns:rdf=" xmlns:rdfs=" xmlns:owl=" xmlns:prop-ja=" xmlns:foaf=" xmlns:prov=" xmlns:dbpedia-owl=" > <rdf:description rdf:about=" <dbpedia-owl:wikipagewikilink rdf:resource=" " /> </rdf:description> <rdf:description rdf:about=" <dbpedia-owl:wikipagewikilink rdf:resource=" " /> </rdf:description> <rdf:description rdf:about=" <dbpedia-owl:wikipagewikilink rdf:resource=" " /> </rdf:description> <rdf:description rdf:about=" "> <dbpedia-owl:wikipagewikilink rdf:resource=" " /> </rdf:description> <rdf:description rdf:about=" "> <dbpedia-owl:wikipagewikilink rdf:resource=" " /> </rdf:description> <rdf:description rdf:about=" "> <dbpedia-owl:wikipagewikilink rdf:resource=" " /> </rdf:description>...

19 p94 SPARQL1.1 LOAD / CLEAR / DROP / ADD / COPY / MOVE / CREATE / INSERT DATA / DELETE DATA / INSERT / DELETE

20 IRI p194 IRI DB WITH < DELETE {?old_iri a < } INSERT {?new_iri a < } WHERE {?old_iri a < BIND(STR(?old_iri) AS?old_iri_string) BIND(" AS?old_prefix) BIND(" AS?new_prefix) BIND(IRI(REPLACE(?old_iri_string,?old_prefix,?new_prefix)) AS?new_iri) }

分散情報システム構成法第5回 Semantic Webの基本とRDF

分散情報システム構成法第5回 Semantic Webの基本とRDF Web Information System Design No.10 セマンティック Web アプリケーションアークテクチャ萩野達也 1 セマンティック Web とは ( 前回 ) データの Web 文書の Web からデータの Web へメタデータメタデータ = 文書やデータに関するデータ計算機可読なメタデータをアプリケーションで共有するデータの共有や統合を可能にするメタデータ about