I5-[DiaSpace] is an extension of the OntoSpace project, which is being conducted as a part of the interdisciplinary Transregional Collaborative Research Center on Spatial Cognition at the University of Bremen in Bremen, Germany. The Center was established by the Deutsche Forschungsgemeinschaft (DFG) on 01 January 2003 at the Universities Bremen and Freiburg and is the 8th Transregional Special Research Project (SFB/TR8) funded by the DFG.