Today is the Leipziger Semantic Web Day 2009 in Leipzig, which is the status meeting for LE4SW project. We’re lucky to welcome more than 60 guests in the Villa Ida in Leipzig/Gohlis, which is more than our firstly booked room could host.

Links:

• http://aksw.org/LSWT
• More Flickr pics

Today, we released a major update of the DL-Learner plugin for Protege 4, the upcoming release of the popular ontology editor. The plugin allows you to get suggestions for axioms you may want to add to your OWL ontology by analysing the instance data using the DL-Learner framework. Again, we prepared a small screencast to give you an idea of how it works. The plugin is installable via the standard Protégé plugin mechanism (Protege 4 build 110 or higher required). This version comes with a completely new suggestion algorithm and enhanced performance. More information can be found on the plugin wiki page. Thanks to Christian Kötteritzsch for his implementation work and Nick Drummond for supporting us in integrating the plugin.

We just released a new improved version of Triplify, which allows to map regular expression URL patterns on sets of SQL queries. Former Triplify releases only included support for simple path patterns. This version is also used to publish the 160GB of geo-data collected by the OpenStreetMap project at http://linkedgeodata.org. The following presentation of a research paper on Triplify was given on April 24th at WWW2009 in Madrid at the Semantic Data Web track:

After the great sucess of last years Triplification Challenge we decided to organize a challenge this year again. Michael Hausenblas chairs the challenge this year. Submission deadline is Mai 30th, 2009. The prizes will be awarded at Triple-I conference 2009 in Graz. All further information can be found at this years Triplification Challenge homepage at: http://triplify.org/Challenge/2009.