Hello,
I am trying to optimize time performance as much as possible on my
full text index queries. To query for classes in DBpedia that contains
"person" in the label, I send the query
SELECT DISTINCT ?s ?o FROM <http://dbpedia.org> WHERE {{?s rdfs:label
?o.[] a ?s .FILTER( bif:contains(?o, "person" ) )}}LIMIT 15
or also (if I want to check dbprop:name):
SELECT DISTINCT ?s ?o FROM <http://dbpedia.org> WHERE {{?s rdfs:label ?
o.[] a ?s .FILTER( bif:contains(?o, "person" ) ) } UNION { ?s
dbpprop:name
?o.[] a ?s .FILTER( bif:contains(?o, "person" ) )}}LIMIT 10
Can I optimize this query in any way? Does it make any different if I
put the bif:contains out of the FILTER, e.g:
SELECT DISTINCT ?s ?o FROM <http://dbpedia.org> WHERE {{?s rdfs:label
?o.[] a ?s. ?o bif:contains "person"}}LIMIT 15
I tried with some examples but the resultant times are very random
(depending also If it is the first time or second time I sent the
query), between 100 to 700 ms
Thanks a lot!
Vanessa :-)
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