Dietmar Offenhuber is a key researcher at the Ludwig Boltzmann Institut in Linz, Austria. He works within the Visualization research project dealing with the topics of indexing, analysis and mediation on a meta-level within the framework of audio-visual archives. Pursuing the following research projects: Visual Strategies for Archives, Software Architecture for a Visualization Framework, Conception of the Research Line "Representation and Visualization of Knowledge". Title of his presentation at the Open Archives 2.0 conference is "Knowledge representation for shared media art archives".