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About the selection of the number of components in correspondence analysis

Abstract : Selecting the right number of axes in correspondence analysis is usually done by using empirical criteria such as :-detection of an inflexion in the diagram of eigenvalues-getting an arbitrary amount of the cumulated percentage of inertia We examine the application of a chi-square goodness of fit test between the data table and its reconstitution with k eigenvalues. This test which has been proposed by E.Malinvaud, then by E.Andersen and G.Saporta has a good behaviour for frequency tables but fails to apply to multiple correspondence analysis. This failure, however enlightens some properties of this test and of correspondence analysis.
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Submitted on : Saturday, March 21, 2020 - 12:08:44 PM
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Gilbert Saporta, Narcisa Tambrea. About the selection of the number of components in correspondence analysis. ASMDA 1993: 6th International Symposium on Applied Stochastic Models and Data Analysis, May 1993, Chania, Greece. pp.846-856. ⟨hal-02514004⟩



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