Hi all.
I have an ontology model (ontModel) by loading some local ontologies via
jena. Now i want to export this model into virtuoso graph for storing and
querying? How could I do it?
Thanks in advance.
Hi Hoan,
What form are these local ontologies available in ? Are they available as file
datasets in N3, RDF/XML or other formats or are they stored internal in this
OntModel tool ?
Best Regards
Hugh Williams
Professional Services
OpenLink Software
Web: http://www.openlinksw.com
Support:
Hi Hoan,
If they are available in RDF/XML form you can load them singularly if there are
not many using the Conductor “RDF - Upload RDF” tab or using the
RDF_LOAD_RDFXML_MT() [1] function and if there are many files the Virtuoso RDF
Bulk loader [2] scripts can be used to upload them all at
Thank you very much, I didn't know this method!
In case I need not a specific number of triples but all triples for a
specific number of resources, I would just use bif:rnd(10,?s) instead of
bif:rnd(10,?s, ?p, ?o), is that correct?
I'm also unsure what value to assign to the decimation
Hello,
I would like to know the best method to get a random sample of all
triples for a subset of all the resources of a SPARQL endpoint, e.g.:
select ?s ?p ?o where {?s ?p ?o. {select ?s where {?s a
dbpedia-owl:Settlement} limit 5}}
The problem here is that the choice of resources
Hello Konrad,
The best, as usual, is decimation in its original style.
E.g.
select ?s ?p ?o from some-graph where { ?s ?p ?o .
FILTER (1 bif:rnd (10, ?s, ?p, ?o))
}
By tweaking first argument of bif:rnd() and the left side of the
inequality you can tweak decimation ratio from 1/10 to the
