Unclassed matrix shading and optimal ordering in hierarchical cluster analysis |
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Authors: | Nathan Gale William C. Halperin C. Michael Costanzo |
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Affiliation: | (1) Department of Geography, University of California, 93106 Santa Barbara, CA |
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Abstract: | A method is presented for the graphic display of proximity matrices as a complement to the common data analysis techniques of hierarchical clustering. The procedure involves the use of computer generated shaded matrices based on unclassed choropleth mapping in conjunction with a strategy for matrix reorganization. The latter incorporates a combination of techniques for seriation and the ordering of binary trees.Partial support for this research was provided by NIJ Grant #82-IJ-CX-0019 and NSF Grant #SES82-06067. The authors wish to acknowledge the assistance of Professors L.J. Hubert, R.G. Golledge, and W.R. Tobler. |
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Keywords: | Hierarchical clustering Choropleth mapping Matrix reorganization Unidimensional seriation Ordered binary trees |
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