Estimate Markov-switching ARX model by EM algorithm. This function is used by MSARmdl
which organizes the output and takes raw data as input.
MSARXmdl_em(theta_0, mdl, k, optim_options)
List with model results.
vector with initial values for parameters.
List with model attributes.
Integer determining the number of regimes.
List with optimization options.
Dempster, A. P., N. M. Laird, and D. B. Rubin. 1977. “Maximum Likelihood from Incomplete Data via the EM Algorithm.” Journal of the Royal Statistical Society. Series B 39 (1): 1–38.
Hamilton, James D. 1990. “Analysis of time series subject to changes in regime.” Journal of econometrics, 45 (1-2): 39–70.