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Dissimilarity measures and divisive clustering for symbolic multimodal-valued data

Author

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  • Kim, Jaejik
  • Billard, L.

Abstract

Nowadays, most government agencies and local authorities regularly and routinely collect a large amount of data from censuses and surveys and officially publish them for public purposes. The most frequently used form for the publication is as statistical tables and it is usually not possible to access the raw data for those tables due to privacy issues. Under these situations, we have to analyze data using only those aggregated tables. These tables typically have formats summarized by ordinal or nominal items. Tables for quantitative variables have histogram-valued formats and those for qualitative variables are represented by multimodal-valued types. Both are classes of the so-called symbolic data. In this study, we propose dissimilarity measures and a divisive clustering algorithm for symbolic multimodal-valued data. In order to split a partition efficiently at each stage, the algorithm extends the monothetic method for binary data. The proposed method is verified by simulation studies and applied to a work-related nonfatal injury and illness dataset.

Suggested Citation

  • Kim, Jaejik & Billard, L., 2012. "Dissimilarity measures and divisive clustering for symbolic multimodal-valued data," Computational Statistics & Data Analysis, Elsevier, vol. 56(9), pages 2795-2808.
  • Handle: RePEc:eee:csdana:v:56:y:2012:i:9:p:2795-2808
    DOI: 10.1016/j.csda.2012.03.001
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    References listed on IDEAS

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    1. Kim, Jaejik & Billard, L., 2011. "A polythetic clustering process and cluster validity indexes for histogram-valued objects," Computational Statistics & Data Analysis, Elsevier, vol. 55(7), pages 2250-2262, July.
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