On the minimal canonical realizations of the Lie algebra
M. Havlíček, P. Exner (1975)
Annales de l'I.H.P. Physique théorique
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M. Havlíček, P. Exner (1975)
Annales de l'I.H.P. Physique théorique
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Schlosser, Hartmut (1994)
Beiträge zur Algebra und Geometrie
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V. de Valk (1989)
Compositio Mathematica
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THOMAS L. SAATY (1999)
Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
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Tomàs. Aluja Banet, Ramón Nonell Torrent (1991)
Qüestiió
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Principal Components Analysis deals mainly with the analysis of large data sets with multivariate structure in an observational context for exploraty purposes. The factorial planes produced will show the main oppositions between variables and individuals. However, we may be interested in going further by controlling the effect of some latent or third variable which expresses some well-defined phenomenon. We go through this by means of a graph among individuals, following the same idea...
Karina Gibert, Ulises Cortés (1997)
Mathware and Soft Computing
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Description of individuals in ill-structured domains produces messy data matrices. In this context, automated classification requires the management of those kind of matrices. One of the features involved in clustering is the evaluation of distances between individuals. Then, a special function to calculate distances between individuals partially simultaneously described by qualitative and quantitative variables is required. In this paper properties and details of the metrics...
Daniel Altschuler, Claude Itzykson (1991)
Annales de l'I.H.P. Physique théorique
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