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Evolution-of-Unfolding-a-geometrical-model-for-preference-and-choice-data

Vanesa M. Vera López
Departamento de Estadística
Universidad de Salamanca
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Ana María Martín-Casado
Departamento de Estadística
Universidad de Salamanca
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  • Abstract
    In this paper we review the Multidimensional Unfolding model since its beginning due to Coombs (1950) like a special case of Multidimensional Scaling, until present, with some of the main works we can find in the literature regarding to the problem of degenerate and trivial solutions, available software and algorithms for optimal solutions calculation and more recent developments like Three-Way Unfolding Analysis and Unfolding joined with Cluster Analysis. Some references to applications of Multidimensional Unfolding in different fields are made.
  • Keywords: Multidimensional Scaling, Unfolding, Individual Preferences, Conjugate Gradient Method.
  • AMS Subject classifications: 62-03, 62H99, 91C15, 91B08, 90C52.