Hidden Markov Models Training by a Particle Swarm Optimization Algorithm |
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Authors: | Sébastien Aupetit Nicolas Monmarché Mohamed Slimane |
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Institution: | 1.Laboratoire d'Informatique, Polytech'Tours,Université Fran?ois-Rabelais de Tours,Tours,France |
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Abstract: | In this work we consider the problem of Hidden Markov Models (HMM) training. This problem can be considered as a global optimization
problem and we focus our study on the Particle Swarm Optimization (PSO) algorithm. To take advantage of the search strategy
adopted by PSO, we need to modify the HMM's search space. Moreover, we introduce a local search technique from the field of
HMMs and that is known as the Baum–Welch algorithm. A parameter study is then presented to evaluate the importance of several
parameters of PSO on artificial data and natural data extracted from images. |
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Keywords: | 68T05 [68Q32 91E40] 68C35 [82C80] 90C59 |
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