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Nested Monte Carlo EM algorithm for switching state-space models

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2 Author(s)
Popescu, C.A. ; Grant MacEwan Coll., Edmonton, Alta., Canada ; Wong, Y.S.

Switching state-space models have been widely used in many applications arising from science, engineering, economic, and medical research. In this paper, we present a Monte Carlo Expectation Maximization (MCEM) algorithm for learning the parameters and classifying the states of a state-space model with a Markov switching. A stochastic implementation based on the Gibbs sampler is introduced in the expectation step of the MCEM algorithm. We study the asymptotic properties of the proposed algorithm, and we also describe how a nesting approach and the Rao-Blackwellized forms can be employed to accelerate the rate of convergence of the MCEM algorithm. Finally, the performance and the effectiveness of the proposed method are demonstrated by applications to simulated and physiological experimental data.

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:17 ,  Issue: 12 )