[Apologies for cross-posting]
Ontotext are pleased to announce the release of OWLIM version 4.2
<http://www.ontotext.com/owlim>. This version has been developed in
parallel with the Sesame openRDF framework <http://www.openrdf.org/>
where Ontotext continue to invest development resources.
OWLIM 4.2 is bundled with Sesame 2.5
<http://www.openrdf.org/news.jsp#sesame-2.5.0> to deliver SPARQL 1.1
Update <http://www.w3.org/TR/sparql11-update/>. This emerging SPARQL
standard provides a much more powerful method to modify
<http://www.ontotext.com/owlim/sparql11> RDF databases without the
requirement for developers to use frameworks and APIs. SPARQL 1.1 Query
conformance has been brought up to the May 2011 working draft
<http://www.w3.org/TR/sparql11-query/>, i.e. all the remaining behaviour
has been implemented along with all the new SPARQL filter functions.
This version of OWLIM-SE is already in use as the engine behind The
National Archive's Semantic Knowledge-base
<http://www.ontotext.com/case/nationalArchives-skb> (SKB). This
installation is used to store government datasets, the FactForge
<http://factforge.net/> dataset and metadata totalling almost *12
billion statements* with high-performance query-answering. Updating
queries in this environment to use SPARQL 1.1 Query features has in some
cases shown dramatic hundred-fold improvements in query performance
<http://www.ontotext.com/owlim/sparql11>.
Using SPARQL 1.1 features through the sesame interface of OWLIM (instead
of the Jena <http://jena.sourceforge.net/> interface adapter) has shown
a dramatic improvement in the explore-update and business-intelligence
use-cases of the Berlin SPARQL Benchmark
<http://www4.wiwiss.fu-berlin.de/bizer/BerlinSPARQLBenchmark/> (BSBM).
Updated results will be published in the very near future.
The next steps for OWLIM will include full SPARQL 1.1 Federation
functionality, data-type indices for faster range queries, graph level
security and virtualisation/nesting of repositories.
Full documentation for all OWLIM editions is available online
<http://owlim.ontotext.com>.
The OWLIM team.
August 2011
