Graphical representation of multivariate data using Chernoff faces
Rafal Raciborski
Department of Political Science
Emory University
Atlanta,
GA
rafal.raciborski@emory.edu
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Abstract. Chernoff (1971, Technical Report 71, Department of Statistics, Stanford
University; 1973, Journal of the American Statistical Association 68: 361–368)
proposed the use of cartoon-like faces to represent points in k dimensions.
This article describes a Stata implementation of a face-generating algorithm using
the method proposed by Flury (1980, Technical Report 3, Institute of Mathematical
Statistics and Actuarial Science, Bern University), Schüpbach (1987, Technical
Report 25, Institute of Mathematical Statistics and Acturial Science, Bern University),
and Friendly (1991, http://www.math.yorku.ca/SCS/sasmac/faces.html). I present examples of applying Chernoff faces to data
clustering and outlier detection.
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Rafal Raciborski
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chernoff, Chernoff faces, graphs
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