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Recolector de Ciencia Abierta, RECOLECTA
Article . 1984 . Peer-reviewed
License: CC BY NC ND
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Recolector de Ciencia Abierta, RECOLECTA
Article . 1984 . Peer-reviewed
License: CC BY NC ND
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Sobre la no unicidad de la clasificación jerárquica asociada a una disminución por los métodos del máximo y UPGMA

On the no uniqueness of hierarchical classification associated with a dissimilarity analyzed by complete linkage and UPGMA methods
Authors: Arcas i Pons, Antoni; Salicrú i Pagès, Miquel;

Sobre la no unicidad de la clasificación jerárquica asociada a una disminución por los métodos del máximo y UPGMA

Abstract

Two distinct ultrametrics, i.e., two hierarchical clustering schemes, may arise from a unique dissimilarity index when using a classification method. May be measured the distance between them by means of a distance index defined on the set of all dissimilarities over a finite set. In the following article the problem of unicity of hierarchical classification associated with complete linkage and UPGMA methods is analyzed in the following aspects: a) Defining an associated dissimilarity for every hierarchical level. b) Computing a boundary for the distance between two ultrametrics associated with an initial dissimilarity.

A partir de una distancia definida en el conjunto de disimilaridades sobre un conjunto finito podemos medir la distancia entre dos ultramétricas asociadas a una disimilaridad inicial a partir de la aplicación de un método de clasificación. En este artículo tratamos el problema de la no unicidad de la clasificación jerárquica asociada para los métodos del máximo y UPGMA estudiando los siguientes puntos: a) Búsqueda de una definición de la disimilaridad asociada a cada nivel de la jerarquía. b) Cálculo de una cota para la distancia entre dos ultramétricas asociadas a la misma disimilaridad inicial.

Peer Reviewed

Country
Spain
Keywords

Cluster analysis, Multivariate analysis, Anàlisi multivariable, Classificació AMS::62 Statistics::62H Multivariate analysis, UPGMA method, :62 Statistics::62H Multivariate analysis [Classificació AMS], Ultrametric distance, Complete linkage method

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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