Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families

Numerical Taxonomy aims to group in clusters, using so-called structure analysis of operational taxonomic units (OTUs or taxons or taxa) through numerical methods. These clusters constitute families. Structural analysis, based on their phenotypic characteristics, exhibits the relationships, in term...

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Detalles Bibliográficos
Autores principales: Plastino, Ángel Luis, Orellana, Rosa Beatriz, Perichinsky, Gregorio
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Informáticas
Numerical Taxonomy
SOFTWARE ENGINEERING
base de datos
Celestial Bodies
Asteroids Families
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/21904
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-21904
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Informáticas
Numerical Taxonomy
SOFTWARE ENGINEERING
base de datos
Celestial Bodies
Asteroids Families
spellingShingle Ciencias Informáticas
Numerical Taxonomy
SOFTWARE ENGINEERING
base de datos
Celestial Bodies
Asteroids Families
Plastino, Ángel Luis
Orellana, Rosa Beatriz
Perichinsky, Gregorio
Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families
topic_facet Ciencias Informáticas
Numerical Taxonomy
SOFTWARE ENGINEERING
base de datos
Celestial Bodies
Asteroids Families
description Numerical Taxonomy aims to group in clusters, using so-called structure analysis of operational taxonomic units (OTUs or taxons or taxa) through numerical methods. These clusters constitute families. Structural analysis, based on their phenotypic characteristics, exhibits the relationships, in terms of degrees of similarity, between two or more OTUs. Entities formed by dynamic domains of attributes, change according to taxonomical requirements: Classification of objects to form families or clusters. Taxonomic objects are here represented by application of the semantics of the Dynamic Relational Database Model. Families of OTUs are obtained employing as tools i) the Euclidean distance and ii) nearest neighbor techniques. Thus taxonomic evidence is gathered so as to quantify the similarity for each pair of OTUs (pair-group method) obtained from the basic data matrix. The main contribution of the present work is to introduce the concept of spectrum of the OTUs, based in the states of their characters. The concept of families’ spectra emerges, if the superposition principle is applied to the spectra of the OTUs, and the groups are delimited through the maximum of the Bienaymé-Tchebycheff relation, that determines Invariants (centroid, variance and radius). Applying the integrated, independent domain technique dynamically to compute the Matrix of Similarity, and, by recourse to an iterative algorithm, families or clusters are obtained. A new taxonomic criterion is thereby formulated. An astronomic application is worked out. The result is a new criterion for the classification of asteroids in the hyperspace of orbital proper elements (the well-known Families of Hirayama). Using an updated database of asteroids we ascertain the robustness of the method. Thus, a new approach to Computational Taxonomy is presented, that has been already employed with reference to Data Mining. The Informatics (Data Mining and Computational Taxonomy), is always the original objective of our researches.
format Objeto de conferencia
Objeto de conferencia
author Plastino, Ángel Luis
Orellana, Rosa Beatriz
Perichinsky, Gregorio
author_facet Plastino, Ángel Luis
Orellana, Rosa Beatriz
Perichinsky, Gregorio
author_sort Plastino, Ángel Luis
title Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families
title_short Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families
title_full Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families
title_fullStr Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families
title_full_unstemmed Spectra in taxonomic evidence in databases III : Application in celestial bodies. Asteroids families
title_sort spectra in taxonomic evidence in databases iii : application in celestial bodies. asteroids families
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/21904
work_keys_str_mv AT plastinoangelluis spectraintaxonomicevidenceindatabasesiiiapplicationincelestialbodiesasteroidsfamilies
AT orellanarosabeatriz spectraintaxonomicevidenceindatabasesiiiapplicationincelestialbodiesasteroidsfamilies
AT perichinskygregorio spectraintaxonomicevidenceindatabasesiiiapplicationincelestialbodiesasteroidsfamilies
bdutipo_str Repositorios
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