Distributed Visual Language Environments for Cooperation and Learning: Applications and Intelligent Support

An increasing number of collaborative learning environments is based on shared workspace systems using two-dimensional graph-structured visual representations such as argumentation networks and concept maps. We propose an integrated framework that allows for flexibly specifying a wide range of visual languages and plugging in components for operational semantics, adequate feedback and intelligent support. The generic application CardBoard provides card-based user interaction and collaboration by means of different languages in shared workspaces. To enhance modifiability, the interfaces between the distributed heterogeneous system components, particularly between intelligent components and user interfaces, have been standardised.