Posts Tagged ‘owl’

MEDICO Ontology Hierarchy Webinterface

Wednesday, November 5th, 2008

We are developing an OWL ontology for the MEDICO project. General design considerations and the different subcomponents are described in a paper. Meanwhile, I have set up an AJAX application which allows to browse the ontology online.

click on the screenshot to go to the ontology browser

click on the screenshot to go to the ontology browser

Acknowledgements for the application go to David Decraene from OntologyOnline.org who has coded the whole thing.

OWL2RDFS for RDFReactor

Tuesday, October 21st, 2008

In MEDICO we use RDFReactor a generate Java classes from our MEDICO Ontology Hierarchy. This allows us to interact with Java objects at source code level instead of generating RDF statements from scratch.

Problem: Unfortunately RDFReactor does only support RDFS but not OWL. Therefore the unified.owl needs to be adapted like this:

original

new

new

I’ve written a Java program using RDF2Go to perform this conversion. It is far from beeing perfect and generic, but it works for us. You can download it from here.

Meanwhile, Patrick Ernst at DFKI has developed a Maven2 RDFReactor plugin. You can find the documentation and a download link here: http://www.dfki.uni-kl.de/hudson/job/RDFReactorPlugin/site/index.html