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HCIL-2004-10

Chintalapani, G., Plaisant, C., Shneiderman, B. (April 2004)
Extending the Utility of Treemaps with Flexible Hierarchy
Proc. International Conference on Information Visualization, (2004), 335-344.
HCIL-2004-10, CS-TR-4663, ISR-TR-2005-52

Treemaps is a visualization technique for presenting hierarchical information on two dimensional displays. Prior implementations limit the visualization to pre-defined static hierarchies. Flexible hierarchy, a new capability of Treemap 4.0, enables users to define various hierarchies through dynamically selecting a series of data attributes so that they can discover patterns, clusters and outliers. This paper describes the design and implementation issues of flexible hierarchy. It then reports on a usability study which led to enhancements to the interface.


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