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Editors-in-chief: Bettina Grün, Edzer Pebesma & Achim Zeileis    ISSN 1548-7660; CODEN JSSOBK
Gifi Methods for Optimal Scaling in R: The Package homals | de Leeuw | Journal of Statistical Software
Authors: Jan de Leeuw, Patrick Mair
Title: Gifi Methods for Optimal Scaling in R: The Package homals
Abstract: Homogeneity analysis combines the idea of maximizing the correlations between variables of a multivariate data set with that of optimal scaling. In this article we present methodological and practical issues of the R package homals which performs homogeneity analysis and various extensions. By setting rank constraints nonlinear principal component analysis can be performed. The variables can be partitioned into sets such that homogeneity analysis is extended to nonlinear canonical correlation analysis or to predictive models which emulate discriminant analysis and regression models. For each model the scale level of the variables can be taken into account by setting level constraints. All algorithms allow for missing values.

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Paper: Gifi Methods for Optimal Scaling in R: The Package homals     Download PDF (Downloads: 12936)
Supplements:
homals_1.0-0.tar.gz: R source package Download (Downloads: 1072; 390KB)
v31i04.R.zip: v31i04.R: R example code from the paper Download (Downloads: 1098; 1KB)
DOI: 10.18637/jss.v031.i04

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Code: GNU General Public License (at least one of version 2 or version 3) or a GPL-compatible license.