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An adaptation of correspondence analysis for square tables
Greenacre, Michael
Universitat Pompeu Fabra. Departament d'Economia i Empresa
The application of correspondence analysis to square asymmetrictables is often unsuccessful because of the strong role played by thediagonal entries of the matrix, obscuring the data off the diagonal. A simplemodification of the centering of the matrix, coupled with the correspondingchange in row and column masses and row and column metrics, allows the tableto be decomposed into symmetric and skew--symmetric components, which canthen be analyzed separately. The symmetric and skew--symmetric analyses canbe performed using a simple correspondence analysis program if the data areset up in a special block format.
Statistics, Econometrics and Quantitative Methods
correspondence analysis
square matrices
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