hhsmmspec: hhsmm specification

In hhsmm: Hidden Hybrid Markov/Semi-Markov Model Fitting

hhsmm specification

Description

Specify a model of class "hhsmmspec" using the model parameters

Usage

hhsmmspec(
  init,
  transition,
  parms.emission,
  sojourn = NULL,
  dens.emission,
  remission = NULL,
  mstep = NULL,
  semi = NULL
)

Arguments

init	vector of initial probabilities
transition	the transition matrix
parms.emission	the parameters of the emission distribution
sojourn	the sojourn distribution, which is one of the following cases: a list containing d, which is a nobs (number of observations) times nstates (number of states) matrix of probabilities, and type = "nonparametric" for non-parametric sojourn distribution a list containing the parameters mu, shift and size of a shifted negative binomial distribution, for each semi-Markovian state, and type = "nbinom" for negative binomial sojourn distribution a list containing the parameters shape and shift of a shifted logarithmic distribution, for each semi-Markovian state, and type = "logarithmic" for logarithmic sojourn distribution a list containing the parameters lambda and shift of the shifted poisson distribution, for each semi-Markovian state, and type = "poisson" for Poisson sojourn distribution a list containing the parameters shape and scale of the gamma distribution, for each semi-Markovian state, and type = "gamma" for gamma sojourn distribution a list containing the parameters shape and scale of the Weibull distribution, for each semi-Markovian state, and type = "weibull" for Weibull sojourn distribution a list containing the parameters meanlog and sdlog of the log-normal distribution, for each semi-Markovian state, and type = "lnorm" for log-normal sojourn distribution
dens.emission	the probability density function of the emission
remission	the random sample generation from the emission distribution
mstep	the M step function for the EM algorithm
semi	a logical vector of length nstate: the TRUE associated states are considered as semi-markov

Value

a model of class "hhsmmspec"

Author(s)

Morteza Amini, [e-mail], Afarin Bayat, [e-mail]

Examples

init = c(1, 0)
transition = matrix(c(0, 1, 1, 0), 2, 2)
parms.emission = list(mix.p = list(c(0.5, 0.5), 1),
				mu = list(list(c(1, 2), c(5, 1)), c(2, 7)),
              sigma = list(list(diag(2), 2 * diag(2)), 0.5 * diag(2)))
sojourn = list(lambda = 1, shift = 5, type = "poisson")
dens.emission = dmixmvnorm
remission = rmixmvnorm
mstep = mixmvnorm_mstep
semi = rep(TRUE,2)
model = hhsmmspec(init, transition, parms.emission, sojourn, 
dens.emission, remission, mstep, semi)

hhsmm documentation built on Sept. 11, 2024, 7:34 p.m.