Hi all,
Thanks Øyvind, Lorenz, Rob for your hints, which were very helpful .
Most important was to reorder patterns in query and expand paths.
So that text:query pattern is at the top .
There is no difference when using subquery nor enclosing text:query pattern
into curly brackets.
You're right
Hi,
I'm trying to use Jena Full Text Search feature according to
https://jena.apache.org/documentation/query/text-query.html
I've noticed that queries using "text:query" are very slow: ~20 times slower
that similar using "FILTER contains" clause.
There are ~5.5M triples in database, 18230
From: Claude Warren
Sent: Monday, May 30, 2022 12:41 PM
To: users@jena.apache.org
Cc: Goławski, Paweł
Subject: Re: Build Full Text Search query using SelectBuilder
On 24/05/2022 11:01, Goławski, Paweł wrote:
PREFIX ex: http://www.example.org/resources#<http://www.example.org/resources>
Hi.
There is a simple query with text:query:
PREFIX ex: http://www.example.org/resources#
PREFIX rdfs: http://www.w3.org/2000/01/rdf-schema#
PREFIX text: http://jena.apache.org/text#
SELECT ?s ?lbl
WHERE {
?s a ex:Product ;
text:query (rdfs:label 'printer');
rdfs:label ?lbl
}
For now I do experiments with full scope, so according to docs:
* RDFS entailments
* basic OWL axioms like ObjectProperty subClassOf Property
* intersectionOf, equivalentClass and forward implication of unionOf sufficient
for traversal of explicit class hierarchies
* Property axioms (inverseOf,
Most of data being stored could be treat as dictionaries, so updates will be
rather big but rarely.
The number of simultaneous reads could be a few hundred maybe.
Queries will need also Micro OWL Reasoner (at least) and acceptable response
time is crucial.
> Hi Paweł,
>
> The amount CPU is
Dear Jena users,
I’m doing research of possible RDF storages to be used in healthcare system.
And I’m especially interested in Jena Fuseki with TBD/TBD2.
I wonder if there is some info about production ready case studies (from
healthcare sector especially, but any others also)?
Can someone
