A Multiple Group Method of Factoring the Correlation Matrix  

Oleh:

Thurstone, L. L.

Jenis: Article from Journal - e-Journal
Dalam koleksi: Psychometrika: A Journal of Quantitative Psychology vol. 10 no. 2 (Jun. 1945), page 73-78.
Topik: Correlation Matrix; Selection of Clusters; Computational Procedure
Fulltext: A Multiple Group Method of Factoring the Correlation Matrix.pdf (350.93KB)

Isi artikel

There are a number of methods of factoring the correlation matrix which require the calculation of a table of residual correlations after each factor has been extracted. This is perhaps the most laborious part of factoring. The method to be described here avoids the computation of residuals after each factor has been computed. Since the method turns on the selection of a set of constellations or clusters of test vectors, it will be calleda multiple group method of factoring. The method can be used for extracting one factor at a time if that is desired but it will be considered here for the more interesting case in which a number of constellations are selected from the correlation matrix at the start. The result of this method of factoring is a factor matrixF which satisfies the fundamental relationFF'=R.

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