F. Micheloud. Correspondence analysis. In Proceedings of the Advanced Econometrics, Lausanne, Switzerland, 1996. HEC. [url]

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This paper introduces to the idea of Correspondence Analysis, which is a factors analysis method that uses categorical variables (that is, non continuous or discretized ones).

The foundamental idea of this method is to eliminate the redundancy of the original data thanks to a reduced number of variables (the factors) which are a combination of the original variables.

Correspondence analysis is a method to describe synthetically a contingency table in which homogenuous individuals are classified on two criterias. This method has been developed by the french-lebanese Benzecri at the end of the 60’s for linguistic applications and is based on the notion of profile.

Tags: Exploratory Data Analysis, statistics, text data mining