Implements the EM algorithm for a parameterized Gaussian mixture model, starting with the maximization step.
meE(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meV(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meX(data, prior = NULL, warn = NULL, …)
meEII(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVII(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meEEI(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVEI(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meEVI(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVVI(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meEEE(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVEE(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meEVE(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVVE(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meEEV(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVEV(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meEVV(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meVVV(data, z, prior=NULL, control=emControl(), Vinv=NULL, warn=NULL, …)
meXII(data, prior = NULL, warn = NULL, …)
meXXI(data, prior = NULL, warn = NULL, …)
meXXX(data, prior = NULL, warn = NULL, …)A numeric vector, matrix, or data frame of observations. Categorical variables are not allowed. If a matrix or data frame, rows correspond to observations and columns correspond to variables.
A matrix whose [i,k]th entry is the conditional probability of
the ith observation belonging to the kth component of the mixture.
Specification of a conjugate prior on the means and variances. The default assumes no prior.
A list of control parameters for EM. The defaults are set by the call
emControl().
An estimate of the reciprocal hypervolume of the data region, when the
model is to include a noise term. Set to a negative value or zero if
a noise term is desired, but an estimate is unavailable --- in that
case function hypvol will be used to obtain the estimate.
The default is not to assume a noise term in the model through the
setting Vinv=NULL.
A logical value indicating whether or not certain warnings
(usually related to singularity) should be issued when the
estimation fails. The default is given by mclust.options("warn").
Catches unused arguments in indirect or list calls via do.call.
A list including the following components:
A character string identifying the model (same as the input argument).
A matrix whose [i,k]th entry is the
conditional probability of the ith observation belonging to
the kth component of the mixture.
proA vector whose kth component is the mixing proportion for the kth component of the mixture model. If the model includes a Poisson term for noise, there should be one more mixing proportion than the number of Gaussian components.
meanThe mean for each component. If there is more than one component, this is a matrix whose kth column is the mean of the kth component of the mixture model.
varianceA list of variance parameters for the model.
The components of this list depend on the model
specification. See the help file for mclustVariance
for details.
VinvThe estimate of the reciprocal hypervolume of the data region used in the computation when the input indicates the addition of a noise component to the model.
The log likelihood for the data in the mixture model.
"info" Information on the iteration.
"WARNING" An appropriate warning if problems are encountered
in the computations.
em,
me,
estep,
mclust.options
# NOT RUN {
meVVV(data = iris[,-5], z = unmap(iris[,5]))
# }
Run the code above in your browser using DataLab