Probabilidades Intervalares em Modelos Ocultos de Markov
DOI:
https://doi.org/10.5540/tema.2006.07.02.0361Abstract
Este trabalho apresenta um estudo sobre modelos ocultos de Markov onde as probabilidades consideradas são representadas por intervalos. Utilizando-se técnicas daMatemática Intervalar, foram desenvolvidos algoritmos intervalares para os problemas relacionados a esses modelos (Problema da Avaliação, Problema da Decodificação e Problema da Estimação de Parâmetros). Apresentam-se versões intervalares para os algoritmos Forward, Backward, Viterbi e Baum Welch. As implementa ções foram realizadas utilizando-se o toolbox Intlab para a Matemática Intervalar, no ambiente Matlab. Exemplos de aplicações são apresentados, mostrando-se a validade dos algoritmos desenvolvidos.References
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