machine learning

Classificação morfológica de galáxias em conjuntos de dados desbalanceados.
P. Ianishi, Rafael Izbicki
January, 2017 TEMA – Tendências em Matemática Aplicada e Computacional
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High-Dimensional density ratio estimation with extensions to approximate likelihood computation
The ratio between two probability density functions is an important component of various tasks, including selection bias correction, …
Rafael Izbicki, A. B. Lee, C. M. Schafer
December, 2014 Journal of Machine Learning Research (AISTATS Track)
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New image statistics for detecting disturbed galaxy morphologies at high redshift
P. E. Freeman, Rafael Izbicki, A. B. Lee, J.A. Newman, C. J. Conselice, A.M. Koekemoer, J.M. Lotz, M. Mozena
December, 2013 Statistical Analysis and Data Mining
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Learning with many experts: Model selection and sparsity
Experts classifying data are often imprecise. Recently, several models have been proposed to train classifiers using the noisy labels …
Rafael Izbicki, Rafael B. Stern
June, 2013 In SAM
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