Transversal analysis in matched series of studies.

In STATIS, relations between studies are throught to be captured by the Hilbert-Schmidt product of matrices associated with a series of studies. [2] showed how to obtain a geometrical representations of the studies using the eigenvalues and eigenvectors of the matrix S. In this paper we present a model and a corresponding transversal analysis. An application to elections in Portugal is presented. [ABSTRACT FROM AUTHOR]