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Constrained DEDICOM

Published online by Cambridge University Press:  01 January 2025

Henk A. L. Kiers  and
Yoshio Takane
Henk A. L. Kiers*
Affiliation:
University of Groningen
Yoshio Takane
Affiliation:
McGill University
*
Requests for reprints should be sent to Henk A. L. Kiers, Department of Psychology (PIOP), Grote Kruisstr. 2/1, 9712 TS Groningen, THE NETHERLANDS.
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Abstract

The DEDICOM method for the analysis of asymmetric data tables gives representations that are identified only up to a nonsingular transformation. To identify solutions it is proposed to impose subspace constraints on the stimulus coefficients. Most attention is paid to the case where different subspace constraints are imposed on different dimensions. The procedures are discussed both for the case where the complete table is fitted, and for cases where only offdiagonal elements are fitted. The case where the data table is skew-symmetric is treated separately as well.

Keywords

asymmetric relationshipsalternating least squares

Information

Type
Original Paper
Information
Psychometrika , Volume 58 , Issue 2 , June 1993 , pp. 339 - 355
Copyright
Copyright © 1993 The Psychometric Society

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Footnotes

The research of H. A. L. Kiers has been made possible by a fellowship of the Royal Netherlands Academy of Arts and Sciences. The research of Y. Takane has been supported by the Natural Sciences and Engineering Research Council of Canada, grant number A6394, and by the McGill-IBM Cooperative Grant. The authors are obliged to Richard A. Harshman for helpful comments on an earlier version.

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