• Towards SPARQL-DL Evaluation in Pellet ·  Friday, October 26th, 2007

    This post starts the series on the SPARQL-DL engine in Pellet…

  • Using Pronto: Breast Cancer Risk Models ·  Tuesday, October 2nd, 2007

    In my previous post, I introduced Pronto, a probabilistic DL reasoning extension for Pellet…

  • Introducing Pronto: Probabilistic DL Reasoning in Pellet ·  Thursday, September 27th, 2007

    This is the first in a series of posts on extending Pellet with probabilistic reasoning capabilities. We call this tool Pronto…

  • Understanding SWRL (Part 3): Some tricky bits ·  Thursday, September 13th, 2007

    What could possibly be tricky about DL Safe SWRL rules? Well, the fact that I have to write out “DL Safe SWRL Rules” rather than merely “DL Safe Rules” or “SWRL Rules” should be some sort of indicator…

  • Understanding SWRL (Part 2): DL Safety ·  Monday, August 27th, 2007

    In the previous post, I gave a hint at the enormous power of (arbitrary) SWRL rules by showing how they can be used (directly and fairly easily) define various built in OWL constructs…

  • Understanding SWRL (Part 1) ·  Sunday, August 12th, 2007

    The OWL-using world wanted some sort of rules, and all the benefits they bring. SWRL is something of a de facto standard for extending OWL with rules with DL Safe SWRL rules (as I shall canonically call them) being the most commonly implemented variant…

  • OWLSight is here ·  Friday, August 3rd, 2007

    Today we announced the release of OWLSight which is our new lightweight web-based ontology browser. OWLSight is a 100% Java application deployed as a webapp using the magic of the <a

  • Pellet 1.5.0 ·  Friday, July 20th, 2007

    Following 6 weeks after the release of 1.5-RC1, we’ve released Pellet 1.5.0. Notable changes since the 1.4 release series include incremental reasoning,

  • Making Ontology Modules Fast ·  Thursday, July 19th, 2007

    We’ve been collaborating with the National Cancer Institute this year to improve Pellet’s performance when working with the NCI

  • Pellet 1.5 RC 1 ·  Friday, July 6th, 2007

    The first release candidate in the Pellet 1.5 series is available for download. Notable enhancements since the 1.4 release (in March) include significant optimizations within the concept classifier (which <a

  • BIANCA, Semantic Summer, and OWLED ·  Friday, May 18th, 2007

    We’ve been busy with new internal projects, as well as some milestones for some customer work

  • Me, Myself, and Protege ·  Tuesday, April 24th, 2007

    In our work for NCI, I had the distinct “pleasure” of being the UI guy for the project, a role I find myself in more often these days. Despite the vagaries and headaches that come with writing Java UI’s, I

  • Pellet 1.4 is out ·  Tuesday, March 20th, 2007

    Pellet 1.4, final release, is now available for download

  • So this is cyberspace... ·  Monday, February 12th, 2007

    Ah, my first ever blog entry. After years of flying under the radar, I am now bursting upon the blog “scene.” I have been an employee with C&P for 9 months now; previously to that, I worked with them as a

  • Arguments, Policies, and Logics ·  Tuesday, January 16th, 2007

    Our plan to offer commercial support for Pellet, and to gradually transition it from an academic to an industrial-strength tool, is proceeding nicely. OWL-DL is an interesting technology; but I keep hearing and seeing signs that the killer app still for Description Logics in Web technologies is still around the corner…


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