Meet us at the GC (Halle 5 / E44)

Posted on August 23, 2007 by ThomasRiechert

Members of the AKSW group are presenting the SoftWiki research projects at this year’s Games Convention from 23rd to 26th of August in Leipzig. Especially for this event we installed OntoWiki and ATUIN to collect ideas for new electronic games. If you can’t come, you can take a look here: http://gc.softwiki.de.

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DL-Learner open source software project created

Posted on August 23, 2007 by Jens Lehmann

The AKSW research group announces the creation of a new software project called DL-Learner. DL-Learner is a tool for learning concepts in Description Logics (DLs) from user-provided examples. Equivalently, it can be used to learn classes in OWL ontologies from selected objects. The goal of DL-Learner is to support knowledge engineers in constructing knowledge and learning about the data they created.

More information can be found on the project homepage and the SourceForge.net project page.

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OntoWiki 0.7.1 released

Posted on August 16, 2007 by Sebastian Tramp

OntoWiki 0.7.1 is now available for download. This is a bugfix release which closes 25 bugs from version 0.7 See a complete list at the sourceforge bug-tracker (status: deleted, group: OntoWiki 0.7.1).

Posted in OntoWiki, Software Releases | 1 Comment

CSSW programme online

Posted on August 8, 2007 by Sören Auer

The schedule for the conference on Social Semantic Web is available. CSSW is co-organized by AKSW and is part of the multi-conference on Software, Agents, and Services for Business, Research, and E-Sciences (SABRE) Highlights include Kingsley Idehen’s keynote, many paper and poster presentations as well as a panel discussion. You may register for CSSW at: http://www.sabre-conference.eu. We look forward to see you in September in Leipzig.

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DBpedia Relationship Finder Release 2

Posted on July 31, 2007 by Jens Lehmann

Second Release of the DBpedia Relationship Finder. The Relationship Finder explores the DBpedia infobox dataset to find out which relations exist between two things. It can answer questions like “How are Leipzig and the Semantic Web related?“. The new version includes, amongst other changes, better algorithms and the possibility to ignore objects and properties.

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OntoWiki 0.7 released

Posted on July 21, 2007 by Sebastian Tramp

OntoWiki 0.7 is now available for download. Changes in this release include

Notes for Updaters:

  • Create a new config.ini from the distributed file, the old 0.6 one doesnt work with 0.7
  • Users are saved as RDF content now, you need to reregister your users.
Posted in OntoWiki, Software Releases | 1 Comment

OntoWiki downloads skyrocketing

Posted on July 16, 2007 by Sören Auer

OntoWiki download statistics from SourceForge Within the last year monthly Powl/OntoWiki downloads were skyrocketing. Check out OntoWiki’s Sourceforge statistics page, do get more details. They effectively quadrupled within the last year, reached now a level of 400-500 monthly downloads and we expect even higher increases in the upcoming year, as OntoWiki will significantly mature, include many more additional features and be overall easier-to-use also for knowledge engineering novices.

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SPARQLer's choice: SparqlEngineDb

Posted on July 2, 2007 by Sebastian Tramp

Benchmark
Christian Weiske, one of our diploma students, has ran some benchmarks to compare his new PHP SparqlEngineDb to some other implementations (Jena, ARC, Redland). The results are surprising – in most cases, his new SPARQL Engine is faster then all competitors.

OntoWiki 0.7, which will be released in the next two weeks, will be shipped with this new engine and a nice SPARQL shell.

Detailed benchmark results are available at cweiske.de.

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The Scripting for the Semantic Web workshop is over

Posted on June 7, 2007 by Sören Auer

We had 39 registered participants, and a great selection of papers and scripting challenge entries. There are some some photos of the workshop available, and the proceedings are now published as CEUR-WS Vol. 248.

The Winner of the Semantic Scripting Challenge was Joshua Shinavier for “Ripple: Functional Programs as Linked Data“. See the screencast and download the code at http://ripple.fortytwo.net. Well done Joshua!

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LDAP 2 SPARQL: Accessing RDF Knowledge Bases via LDAP Clients

Posted on June 6, 2007 by Sebastian Tramp

In order to exploit the client support of LDAP directories with the semantic expressivity of RDF knowledge bases, we aim at integrating RDF knowledge bases into LDAP directory services.

LDAP 2 SPARQL is a Backend to the widely used OpenLDAP server. It translates LDAP queries into SPARQL queries, asks a SPARQL endpoint and translates the result back to LDIF.

We’ve just released LDAP 2 SPARQL 0.2, the first official version the backend. It was presented as a Demo at the 4th European Semantic Web Conference this week …

Posted in LDAP 2 SPARQL, Software Releases | 1 Comment