This paper aims at showing how external information contributes in analysing a lexical table by enriching the readability of factorial maps. The theoreticalframe is given by Principal Component Analysis onto a Reference Subspace, a methodbased on the orthogonal projection of a correlation structure on the space spanned by an external set of explanatory variables. In previous papers the idea of a projected lexical analysis has been introduced by using a single reference space for terms. Here we consider a double projection strategy by involving external informative structures both on documents and terms, i.e. on rows and columns of a lexical table.

A doubly projected analysis for lexical tables

MISURACA MICHELANGELO
2010

Abstract

This paper aims at showing how external information contributes in analysing a lexical table by enriching the readability of factorial maps. The theoreticalframe is given by Principal Component Analysis onto a Reference Subspace, a methodbased on the orthogonal projection of a correlation structure on the space spanned by an external set of explanatory variables. In previous papers the idea of a projected lexical analysis has been introduced by using a single reference space for terms. Here we consider a double projection strategy by involving external informative structures both on documents and terms, i.e. on rows and columns of a lexical table.
9780817647988
External Information; Orthogonal Projectors; Factorial Maps
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/167825
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