IMIFA (version 2.1.5)

storeControl: Set storage values for use with the IMIFA family of models

Description

Supplies a list of values for logical switches indicating whether parameters of interest (means, scores, loadings, uniquenesses, and mixing proportions) should be stored when running models from the IMIFA family via mcmc_IMIFA. It may be useful not to store certain parameters if memory is an issue.

Usage

storeControl(mu.switch = TRUE,
             score.switch = TRUE,
             load.switch = TRUE,
             psi.switch = TRUE,
             pi.switch = TRUE,
             ...)

Arguments

mu.switch

Logical indicating whether the means are to be stored (defaults to TRUE).

score.switch

Logical indicating whether the factor scores are to be stored.

As the array containing each sampled scores matrix tends to be amongst the largest objects to be stored, this defaults to FALSE inside mcmc_IMIFA when length(range.G) * length(range.Q) > 10, otherwise the default is TRUE. For the "MIFA", "OMIFA", and "IMIFA" methods, setting this switch to FALSE also offers a slight speed-up.

Unlike other parameters, the scores need not be stored for posterior predictive checking (see Note below).

load.switch

Logical indicating whether the factor loadings are to be stored (defaults to TRUE).

psi.switch

Logical indicating whether the uniquenesses are to be stored (defaults to TRUE).

pi.switch

Logical indicating whether the mixing proportions are to be stored (defaults to TRUE).

...

Catches unused arguments.

Value

A named vector in which the names are the names of the storage switches and the values are logicals indicating whether that parameter is to be stored. The list also contains as an attribute a logical for each switch indicating whether it was actually supplied (TRUE) or the default was accepted (FALSE).

Details

storeControl is provided for assigning values for IMIFA models within mcmc_IMIFA. It may be useful not to store certain parameters if memory is an issue (e.g. for large data sets or for a large number of MCMC iterations after burnin and thinning).

See Also

mcmc_IMIFA, get_IMIFA_results, mixfaControl, mgpControl, bnpControl

Examples

# NOT RUN {
stctrl <- storeControl(score.switch=FALSE)

# data(olive)
# sim  <- mcmc_IMIFA(olive, "IMIFA", n.iters=5000, storage=stctrl)

# Alternatively specify these arguments directly
# sim  <- mcmc_IMIFA(olive, "IMIFA", n.iters=5000, score.switch=FALSE)
# }