flexmix: relabel – R documentation

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relabel

Relabel the Components

Description

The components are sorted by the value of one of the parameters or according to an integer vector containing the permutation of the numbers from 1 to the number of components.

Usage

relabel(object, by, ...)
## S4 method for signature 'FLXdist,character'
relabel(object, by, which = NULL, ...)

Arguments

`object`	An object of class `"flexmix"`.
`by`	If a character vector, it needs to be one of `"prior"`, `"model"`, `"concomitant"` indicating if the parameter should be from the component-specific or the concomitant variable model. If an integer vector it indicates how the components should be sorted. If missing, the components are sorted by component size.
`which`	Name (or unique substring) of a parameter if `by` is equal to "model" or "concomitant".
`...`	Currently not used.

Author(s)

Friedrich Leisch and Bettina Gruen

Examples

set.seed(123)
    beta <- matrix(1:16, ncol = 4)
    beta
    df1 <- ExLinear(beta, n = 100, sd = .5)
    f1 <- flexmix(y~., data = df1, k = 4)

    ## There was label switching, parameters are not in the same order
    ## as in beta:
    round(parameters(f1))
        
    betas <- rbind(beta, .5)
    betas

    ## This makes no sense:
    summary(abs(as.vector(betas-parameters(f1))))

    ## We relabel the components by sorting the coefficients of x1:
    r1 <- relabel(f1, by = "model", which = "x1")
    round(parameters(r1))

    ## Now we can easily compare the fit with the true parameters:
    summary(abs(as.vector(betas-parameters(r1))))

flexmix

Flexible Mixture Modeling

v2.3-17

GPL (>= 2)

Authors

Bettina Gruen [aut, cre] (<https://orcid.org/0000-0001-7265-4773>), Friedrich Leisch [aut] (<https://orcid.org/0000-0001-7278-1983>), Deepayan Sarkar [ctb] (<https://orcid.org/0000-0003-4107-1553>), Frederic Mortier [ctb], Nicolas Picard [ctb] (<https://orcid.org/0000-0001-5548-9171>)

Initial release