Abstract #302096

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JSM 2003 Abstract #302096
Activity Number: 284
Type: Topic Contributed
Date/Time: Tuesday, August 5, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistical Graphics
Abstract - #302096
Title: Categorical Displays for a Million Cases
Author(s): Heike Hofmann*+
Companies: Iowa State University
Address: 122 Snedecor Hall, Ames, IA, 50011-1210,
Keywords: categorical data ; mosaic plots ; large datasets ; visualization
Abstract:

Fortunately, categorical displays are relatively independent from the number of cases they display. Unfortunately, the number of categories of a variable tends to grow with an increase in the number of cases. The challenge for categorical displays therefore is to deal with large number of categories and variables with skew marginal distributions. In an interactive framework techniques like reordering and grouping of categories help to produce clearer images of "what is in the data." Querying mechanisms and variations of the display are used for extracting summarized information.

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