Hi,
3.17 seems to be about the same, but breaking down the query helped
partially
Original single subclass query: 28s, broke up query: 31ms ( returns 14
items)
Original subclass of subclass: 150s ( returns 23 items), broke up query
doesn't finish in 15 mins and Fuseki seems to hang.
Here's the broke up query for subclass of subclass:
?Z rdf:rest*/rdf:first id:106048009 . ?X owl:intersectionOf ?Z .
?subclass rdfs:subClassOf ?X .
?subclass skos:prefLabel ?label .
?Z2 rdf:rest*/rdf:first ?subclass . ?X2 owl:intersectionOf ?Z2 .
?subclass2 rdfs:subClassOf ?X2 .
?subclass2 skos:prefLabel ?label2 .
BR
On 15/12/2020 20.30, Andy Seaborne wrote:
On 15/12/2020 14:33, Mikael Pesonen wrote:
Hi,
I am querying subclasses of class (here id:365852007) which belongs
to RDF collection like this
id:1 rdf:type owl:Class ;
rdfs:subClassOf [ owl:intersectionOf ( ... id:365852007 ...
) ] ;
skos:prefLabel "something"@en .
id:2 rdf:type owl:Class ;
rdfs:subClassOf [ owl:intersectionOf ( ... id:365852007 ...
) ] ;
skos:prefLabel "something else"@en .
... denotes random number of other elements in the list.
SPARQL:
select * where
{
?subclass rdfs:subClassOf [ owl:intersectionOf
/rdf:rest*/rdf:first id:365852007 ] .
?subclass skos:prefLabel ?label .
Try breaking the pattern up:
?Z rdf:rest*/rdf:first id:365852007 .
?X owl:intersectionOf ?Z .
?subclass rdfs:subClassOf ?X .
?subclass rdfs:label ?label .
and use 3.17.0
}
This is slow (~10 secs) and we need to extend the query to subclasses
of the subclasses and so on.
Is there any faster way to get this done?
Thanks!
--
Lingsoft - 30 years of Leading Language Management
www.lingsoft.fi
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Mikael Pesonen
System Engineer
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