1990 Volume 17 Issue 28 Pages 37-48
Solutions of Correspondence Analysis (CA) are obtained with three artificial two-way contingency tables. Two new concepts are introduced to clarify the structure of the problem. One is dual space representation, which is closely related to the representation proposed by Tenenhaus and Young (1985). Another is orthogonal polynomial systems for finite sums. Further, these suggest possible procedures for obtaining solutions of other method of multivariate data analysis.