Gaussian Mixtures
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. SeleÃÃo de protÃtipos: combinando auto-geraÃÃo de protÃtipos e mistura de gaussianas
Prototype selection is a machine learning scheme in which the main purpose is to choose pattern vectors from the training dataset that achieve a better fit to data point distributions and maintain class separation. The aim of this kind of technique is to find the smallest possible prototype set that minimizes the classification error rate. Prototype-based st
Publicado em: 2008
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2. Independent component analysis applied to separation of audio signals. / Análise de componentes independentes aplicada à separação de sinais de áudio.
This work studies Independent Component Analysis (ICA) for instantaneous mixtures, applied to audio signal (source) separation. Three instantaneous mixture separation algorithms are considered: FastICA, PP (Projection Pursuit) and PearsonICA, presenting two common basic principles: sources must be statistically independent and non-Gaussian. In order to analy
Publicado em: 2008
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3. Gaussian curvature and the equilibrium among bilayer cylinders, spheres, and discs
In mixtures of cetyltrimethylammonium bromide (CTAB) and sodium perfluorooctanoate (FC7) in aqueous solution, novel bilayer cylinders with hemispherical end caps and open, flat discs coexist with spherical unilamellar vesicles, apparently at equilibrium. Such equilibrium among bilayer cylinders, spheres, and discs is only possible for systems with a spontane
National Academy of Sciences.