Communications for Statistical Applications and Methods

The Korean Statistical Society (한국통계학회)
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Variable Arrangement for Data Visualization

  • Huh, Moon Yul (Department of Statistics, Sungkyunkwan University, Seoul Korea) ;
  • Song, Kwang Ryeol (Department of Statistics, Sungkyunkwan University)
  • Published : 2001.12.01
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Abstract

Some classical plots like scatterplot matrices and parallel coordinates are valuable tools for data visualization. These tools are extensively used in the modern data mining softwares to explore the inherent data structure, and hence to visually classify or cluster the database into appropriate groups. However, the interpretation of these plots are very sensitive to the arrangement of variables. In this work, we introduce two methods to arrange the variables for data visualization. First method is based on the work of Wegman (1999), and this is to arrange the variables using minimum distance among all the pairwise permutation of the variables. Second method is using the idea of principal components. We Investigate the effectiveness of these methods with parallel coordinates using real data sets, and show that each of the two proposed methods has its own strength from different aspects respectively.

Keywords

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