ICL {flexmix}R Documentation

Integrated completed likelihood criterion

Description

Compute the Integrated Completed Likelihood criterion for model selection.

Usage

## S4 method for signature 'flexmix':
ICL(object, ...)
## S4 method for signature 'stepFlexmix':
ICL(object, ...)

Arguments

object see Methods section below
... Some methods for this generic function may take additional, optional arguments. At present none do.

Value

Returns a numeric vector with the corresponding ICL value(s).

Methods

object = "flexmix":
Compute the ICL of a flexmix object.
object = "stepFlexmix":
Compute the ICL of all models contained in the stepFlexmix object.

Author(s)

Friedrich Leisch and Bettina Gruen

References

C. Biernacki, G. Celeux and G. Govaert. Assessing a mixture model for clustering with the integrated completed likelihood. IEEE Transactions on Pattern Analysis and Machine Intelligence 22(7), pages 719-725, 2000.

Examples

data("NPreg")
ex1 <- flexmix(yn~x+I(x^2), data=NPreg, k=2)
ICL(ex1)

[Package flexmix version 2.2-0 Index]