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Re: [ontolog-forum] Apache Jena

To: rwheeler@xxxxxxxxxxxxxxxxxxxxx, "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Siddharth Taduri <staduri@xxxxxxxxxxxx>
Date: Fri, 23 Dec 2011 14:38:07 -0800
Message-id: <CADjas3APEaFVqqkBXtk-_9BtjSCiB3aBguxxkvDH_VURhTtPKg@xxxxxxxxxxxxxx>
Ron,

I've extensively used Jena in my research and it is an excellent library for developing applications dealing with RDF, RDFS, OWL and SPARQ - as the project website suggests. Jena provides a native RDFS rule engine which is computationally more efficient than a full-fledged OWL based rule engine. For more involved logic and properties, Jena also supports SWRL rules reasoning for OWL based ontologies via a few native OWL reasoners. The thing I like the most about Jena is its flexibility in integrating 3rd party reasoners such as the Pellet, an OWL reasoner which also has support for DL-Safe SWRL rules (a small subset of the OWL axioms). Jena integrates with traditional relational databases as a backend store for triples in a variety of formats and 3rd party triple stores such as Virtuoso, Mulgara can be easily integrated into any application. It's also easy to throw a decent front end onto any application using Google's Web Toolkit or similar frameworks.

I may be a little under-informed, but I believe HP doesn't support the Jena project anymore and has hence transitioned into the Apache Incubator. Since it is an already well established library, I believe it will soon be endorsed by the Apache Software Foundation and will receive full support from the Apache community.

Cheers,

-- Sid

On Fri, Dec 23, 2011 at 10:57 AM, Ron Wheeler <rwheeler@xxxxxxxxxxxxxxxxxxxxx> wrote:
Is this something useful?

http://incubator.apache.org/projects/jena.html
"Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine."

It is still in incubation at Apache.

Ron

--
Ron Wheeler
President
Artifact Software Inc
email: rwheeler@xxxxxxxxxxxxxxxxxxxxx
skype: ronaldmwheeler
phone: 866-970-2435, ext 102



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