Innovations in Visualization

Co-located Collaborative Tree Comparison

Petra Isenberg
Sheelagh Carpendale

In many domains, increased collaboration has lead to more innovation by fostering the sharing of knowledge, skills, and ideas. Shared analysis of information visualizations does not only lead to increased information processing power, but team members can also share, negotiate, and discuss their views and inter pretations on a dataset and contribute unique perspectives on a given problem. Designing technologies to suppor t collaboration around information visualizations poses special challenges and relatively few systems have been designed. We focus on suppor ting small groups collaborating around information visualizations in a co-located setting, using a shared interactive tabletop display. We introduce an analysis of challenges and requirements for the design of co- located collaborative information visualization systems. We then present a new system that facilitates hierarchical data comparison tasks for this type of collaborative work. Our system suppor ts multi-user input, shared and individual views on the hierarchical data visualization, flexible use of representations, and flexible workspace organization to facilitate group work around visualizations.


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Petra Isenberg. Information Visualization in Co-located Collaborative Environments. In Proceedings of the Grace Hopper Celebration of Women in Computing, PhD Forum, 2007. PDF Paper
Petra Isenberg and Sheelagh Carpendale. Interactive Tree Comparison for Co-located collaborative Information Visualization. IEEE Transactions on Visualization and Computer Graphics (Proceedings Visualization / Information Visualization 2007), 12(5):1232-1238, nov/dec, 2007. PDF Paper Video File

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Project page on Petra Isenberg's website