Hackalod 2015

README.md

Hackalod 2015

Some sample SPARQL queries for KB endpoint

Cover art lookup service:

http://coverservice.bibliotheek.nl/cover/image/{isbn}

Examples:

• http://coverservice.bibliotheek.nl/cover/image/0060013133
• http://coverservice.bibliotheek.nl/cover/image/0552152633
• http://coverservice.bibliotheek.nl/cover/image/9789047704720

book_lkp.rq

# lookup books and labels
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dbr: <http://dbpedia.org/resource/>
PREFIX schema: <http://schema.org/>
SELECT distinct ?s ?label WHERE {
  { ?s a schema:Book }
  union 
  { ?s a schema:EBook }
  union
  { ?s a schema:CreativeWork }
  ?s rdfs:label ?label .
} 

concept_lkp.rq

# lookup concepts
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dbr: <http://dbpedia.org/resource/>
PREFIX schema: <http://schema.org/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
SELECT distinct ?s ?label WHERE {
  ?s a skos:Concept ;
    rdfs:label ?label .
} 

federated.rq

# find all concepts related to the interests of a person
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX dct: <http://purl.org/dc/terms/>
SELECT ?o2 (count(distinct ?o) as ?c1) WHERE {
  service <http://dydra.com/eknutov/hackalod/sparql> {
    ?s a foaf:Person ;
       foaf:interest ?o
  }
  ?o dct:subject|dct:creator ?z .
  ?z skos:broader* ?o2 .
}
group by ?o2

library_lkp.rq

# lookup libraries and labels
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX dbr: <http://dbpedia.org/resource/>
SELECT distinct ?s ?label WHERE {
  ?s a dbr:Library ;
       rdfs:label ?label
}