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Issue No. 03 - May/June (2007 vol. 13)
ISSN: 1077-2626
pp: 494-507
Matthew O. Ward , IEEE Computer Society
Elke A. Rundensteiner , IEEE Computer Society
William Ribarsky , IEEE Computer Society
<p><b>Abstract</b>—Few existing visualization systems can handle large data sets with hundreds of dimensions, since high-dimensional data sets cause clutter on the display and large response time in interactive exploration. In this paper, we present a significantly improved multidimensional visualization approach named <it>Value and Relation</it> (VaR) display that allows users to effectively and efficiently explore large data sets with several hundred dimensions. In the VaR display, data values and dimension relationships are explicitly visualized in the same display by using dimension glyphs to explicitly represent values in dimensions and glyph layout to explicitly convey dimension relationships. In particular, pixel-oriented techniques and density-based scatterplots are used to create dimension glyphs to convey values. Multidimensional scaling, Jigsaw map hierarchy visualization techniques, and an animation metaphor named Rainfall are used to convey relationships among dimensions. A rich set of interaction tools has been provided to allow users to interactively detect patterns of interest in the VaR display. A prototype of the VaR display has been fully implemented. The case studies presented in this paper show how the prototype supports interactive exploration of data sets of several hundred dimensions. A user study evaluating the prototype is also reported in this paper.</p>
Multidimensional visualization, high-dimensional data sets, visual analytics.

E. A. Rundensteiner, M. O. Ward, W. Ribarsky, D. Hubball and J. Yang, "Value and Relation Display: Interactive Visual Exploration of Large Data Sets with Hundreds of Dimensions," in IEEE Transactions on Visualization & Computer Graphics, vol. 13, no. , pp. 494-507, 2007.
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