We then focused on further optimisations not at the query-engine level, but at the dataset level, analysing it more deeply, and we identified that: (1) 188 distinct properties are used to link artists together directly; (2) 578 distinct properties are used to link an artist to any resource (including artists) ; (3) 767 distinct properties are used to link any resource (including artists) to an artist.
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix : <http://purl.org/datanode/ex/0.2/DBREC/5#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix dbpedia: <http://dbpedia.org/resource/> .
@prefix dn: <http://purl.org/datanode/ns/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix void: <http://rdfs.org/ns/void#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
<http://purl.org/datanode/ex/0.2/DBREC/5#>
a foaf:Document ;
rdfs:comment "0) optimize the dataset for the task >> optimize, Dataset, Task 1) identify the distinct properties used to link artists directly >> identify, Distinct, Property, Link, Artist, Direct 2) there are 578 distinct properties that link artists directly >> 578, Distinct, Property, Link, Direct 3) identify the distinct properties used to link artists to any other resource >> identify, Distinct, Property, Link, Artist, Resource, AnyOther 4) 767 distinct properties are used to link artists to any other resource >> 767, Distinct, Property, Link, Artist, AnyOther, Resource" ;
rdfs:label "We then focused on further optimisations not at the query-engine level, but at the dataset level, analysing it more deeply, and we identified that: (1) 188 distinct properties are used to link artists together directly; (2) 578 distinct properties are used to link an artist to any resource (including artists) ; (3) 767 distinct properties are used to link any resource (including artists) to an artist. " .
:DBPedia
a dn:Datanode .
:artists
dn:isSelectionOf :DBPedia .
:artists-links
dn:hasVocabulary :relations ;
dn:isSectionOf :artists .
:direct-links
dn:hasVocabulary :direct-relations ;
dn:isSectionOf :artists-links ;
void:properties "578"^^xsd:int .
:direct-relations
dn:isPortionOf :relations .
:indirect-links
dn:disjointSection :direct-links ;
dn:hasVocabulary :indirect-relations ;
void:properties "767"^^xsd:int .
:indirect-relations
dn:differentCapability :direct-relations ;
dn:disjointPortion :direct-relations .
:optimized
dn:isCopyOf :direct-links ;
dn:optimizedFrom :artists .
:relations
dn:relationsOf :artists .