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See detailRelating factor matrices of different dimensionality: A note on optimizing orthogonal procrustes solutions
Krolak-Schwerdt, Sabine UL; Orlik, Peter

in Universität des Saarlandes: Arbeiten der Fachrichtung Psychologie (1998), 187

l'vlatching by the Procrustes method involves the transformation of a matrix A to maximal agreement with a specified target matrix B. The present paper is concerned with the soluti on of the 'Orthogonal ... [more ▼]

l'vlatching by the Procrustes method involves the transformation of a matrix A to maximal agreement with a specified target matrix B. The present paper is concerned with the soluti on of the 'Orthogonal Procrustes problem' when the column orders of A and B are different. Avai lable techniques ei ther yield nonunique solutious or the column order of one matrix has to be adjusted by truncating or adding some columns. A new method i s advanced which provides a unique sol,ut.ion without constraining the number of columns of corresponding matrices. An illustrative example is given. [less ▲]

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See detailComparative analysis of value concepts: Some methodological remarks
Krolak-Schwerdt, Sabine UL; Schneider, Johann F.

in Universität des Saarlandes: Arbeiten der Fachrichtung Psychologie (1998), 185

This paper shows the usefulness of methods of three-mode factor analysis for cross-cultural compa.risous of value concepts. Data were obtained frotu :100 German and :wo American students, using the ... [more ▼]

This paper shows the usefulness of methods of three-mode factor analysis for cross-cultural compa.risous of value concepts. Data were obtained frotu :100 German and :wo American students, using the Individual and Organizational Values SYM LOG rating form. The comparative structural analyses of the samples made it apparent that the SYM LOG rating forms used did not yield the expected correspom.lcncc to the theoretical three-dimensional value space. Reasons for and r.onsequen . ces of these fit,ulings for further studies in this field are discussed. The methodological approach outlined in this paper eau supplement the criteria llales et al. ( 1987) formulated for adaptation o'f SYM LOG rating items to particular populations and cultural contexts, and provides more adequate procedures for da.ta ana.lysis. [less ▲]

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See detailDirect clustering of a two-mode binary data-matrix
Krolak-Schwerdt, Sabine UL; Orlik, Peter

in Universität des Saarlandes: Arbeiten der Fachrichtung Psychologie (1998), 186

In this paper a discrete, categorical model is proposed for two-:­ mode data matrices with binary entries Xij E {0, 1}. The method operates directly upon a raw input (objects by attributes) data array by ... [more ▼]

In this paper a discrete, categorical model is proposed for two-:­ mode data matrices with binary entries Xij E {0, 1}. The method operates directly upon a raw input (objects by attributes) data array by determining two-mode submatrices whose entries entirely have values x;j = 1. In addition, different submatrices are required to have a minimum set of objectattribute- pairs in common. Objects and attributes are classified simultaneously in a number ofjoint clusters. The method may be characterized as a non-hierarchical clustering procedure and in its model function to predict the data it is similar to Boolean factor analy􀢛is. Basically, the proposed method dubbed ' GRIDPAT' (for 'PATtern analysis of GRIDs') was developped for the structural representation of self concept data. Its relations to basic notions of Formal Concept Analysis and blockmodeling are discussed. An illustrative application of the approach is provided. [less ▲]

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