Árvores de Decisão na Classificação de Dados Astronômicos

R.S.R Ruiz, H.F. de Campos Velho, R.D.C. Santos, M. Trevisan

Abstract


Os registros de astronomia ótica constituem uma fonte de informação extremamente importante. Estas medidas são fundamentais para classificar estrelas e galáxias. Este trabalho descreve o algoritmo de construção de árvore de decisão (J4.8) e sua aplicação na construção de classificadores baseados em atributos fotométricos para classificar objetos astronômicos em estrelas e galáxias. Dados do projeto Sloan Digital Sky Survey (SDSS) foram utilizados para treinamento e validação dos classificadores desenvolvidos. Os classificadores apresentaram índices de acerto, sobre o conjunto de teste, superiores a 98% para a classificação de estrelas e superiores a 99% para a classificação de galáxias.

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DOI: https://doi.org/10.5540/tema.2009.010.01.0075

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Trends in Computational and Applied Mathematics

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