The current version of OntoMedia is still in beta-development, so if you experience problems don't hesitate to send us a bug report to the adress:


Please send your comments, ideas, or questions to:


Known issues:

  1. Changes and modifications to the category graph is rather slow at the moment. This limitation is caused by the poor write-performance of the current used in-memory Sesame Repository. We are working to increase write performance with a new Sesame Repository storage backend in future releases.
  2. Large category graphs will significantly decrease animation speed. This is caused by the current Touchgraph implementation of the spring-layout algorithm, which produces n^2 time-complexity with respect to the number of nodes in the graph. We don't plan to implement a new layout algorithm in the near future, as the performance should be ok for medium sized graphs (<1000 nodes).