[DotGNU]FW: [ANN] 3store 2.2.1

[Danny Ayers]

Thought this may be of interest to GNU.RDF folks :

http://sourceforge.net/projects/threestore/

This is a announcement of the release of version 2.2.1 of 3store, a GNU
General Public Licenced persistent RDF knowledgebase.

3store has the following capabilities
  * RDQL interface (limited subset)
  * OKBC interface (deprecated, to support 3store v1 backed software)
  * Subclass and subproperty taxonomic reasoning
  * Query complexity estimation
  * Relatively quick RDF import
  * Fast query execution

It was built to support the AKT Project (http://www.aktors.org/), which
needs an efficient RDF KB to track the rapidly changing RDF dataset used
to support development.

The core of the software is a C library linking against MySQL. There
is an included Apache Web server module that provides an HTTP CGI+XML
interface to it.

Feel free to explore the testset here:
http://triplestore.aktors.org/~swh/3S-browser/?resource=http%3A%2F%2Fwww.akt
ors.org%2F

And try RDQL queries at http://triplestore.aktors.org/rdql/ eg:

SELECT ?uri,?name,?unit,?uname
WHERE (?uri, <akt:has-research-interest>, ?ri),
      (?ri, <rdf:type>, <http://www.acm.org/class/1998/Research-Area>),
      (?uri, <akts:has-pretty-name>, ?name),
      (?uri, <akt:unit-of-organization>, ?unit),
      (?unit, <akts:has-pretty-name>, ?uname)
USING akts FOR <http://www.aktors.org/ontology/support#>,
      akt FOR <http://www.aktors.org/ontology/portal#>,
      rdf FOR <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

which will return 500+ results from the 4.1 million triple KB in around
400ms, using subClassOf and subPropertyOf reasoning. NB this does not
include the time taken to download the results to your client if using
HTTP.

Interring and indexing the triples from RDF/XML files takes around 2 hours.

The system is still under active development, but we feel that it is now
stable enough for wider use. It is known to build under the RedHat and
Debian GNU/Linux distributions.

3store is funded by the AKT project and developed at the University of
Southampton.

--
Stephen Harris                    07970 557047
AKT, IAM Research Group          023 8059 2831
University of Southampton, UK
address@hidden     http://www.aktors.org/