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An Efficient Algorithm for Joint Correspondence Analysis

Published online by Cambridge University Press:  01 January 2025

Robert J. Boik*
Affiliation:
Department of Mathematical Sciences, Montana State University
*
Requests for reprints should be sent to Robert J. Boik, Department of Mathematical Sciences, Montana State University, Bozeman MT 59717-0240.

Abstract

Joint correspondence analysis is a technique for constructing reduced-dimensional representations of pairwise relationships among categorical variables. The technique was proposed by Greenacre as an alternative to multiple correspondence analysis. Joint correspondence analysis differs from multiple correspondence analysis in that it focuses solely on between-variable relationships. Greenacre described one alternating least-squares algorithm for conducting joint correspondence analysis. Another alternating least-squares algorithm is described in this article. The algorithm is guaranteed to converge, and does so in fewer iterations than does the algorithm proposed by Greenacre. A modification of the algorithm for handling Heywood cases is described. The algorithm is illustrated on two data sets.

Information

Type
Original Paper
Copyright
Copyright © 1996 The Psychometric Society

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