Parallel sets: Interactive exploration and visual analysis of categorical data

被引:148
作者
Kosara, R
Bendix, F
Hauser, H
机构
[1] Univ N Carolina, Dept Comp Sci, Charlotte, NC 28223 USA
[2] VRVis Res Ctr, A-1220 Vienna, Austria
关键词
information visualization; interaction; nominal data; categorical data; multivariate data;
D O I
10.1109/TVCG.2006.76
中图分类号
TP31 [计算机软件];
学科分类号
081202 ; 0835 ;
摘要
Categorical data dimensions appear in many real-world data sets, but few visualization methods exist that properly deal with them. Parallel Sets are a new method for the visualization and interactive exploration of categorical data that shows data frequencies instead of the individual data points. The method is based on the axis layout of parallel coordinates, with boxes representing the categories and parallelograms between the axes showing the relations between categories. In addition to the visual representation, we designed a rich set of interactions. Parallel Sets allow the user to interactively remap the data to new categorizations and, thus, to consider more data dimensions during exploration and analysis than usually possible. At the same time, a metalevel, semantic representation of the data is built. Common procedures, like building the cross product of two or more dimensions, can be performed automatically, thus complementing the interactive visualization. We demonstrate Parallel Sets by analyzing a large CRM data set, as well as investigating housing data from two US states.
引用
收藏
页码:558 / 568
页数:11
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