split_comp: Split a mixture component of a Gaussian mixture model

In gmgm: Gaussian Mixture Graphical Model Learning and Inference

Split a mixture component of a Gaussian mixture model

Description

This function splits a mixture component of a Gaussian mixture model using the singular value decomposition of the covariance matrix (Zhang et al., 2003).

Usage

split_comp(gmm, comp = 1, n_sub = 2, space = 0.5)

Arguments

gmm	An object of class gmm.
comp	An integer corresponding to the index of the split mixture component.
n_sub	A positive integer corresponding to the number of subcomponents.
space	A numeric value in [0, 1[ corresponding to the space between the subcomponents.

Value

The gmm object after splitting the mixture component.

References

Zhang, Z., Chen, C., Sun, J. and Chan, K. L. (2003). EM algorithms for Gaussian mixtures with split-and-merge operation. Pattern Recognition, 36(9):1973–1983.

See Also

merge_comp

Examples

data(gmm_body)
gmm_1 <- split_comp(gmm_body, n_sub = 3)

gmgm documentation built on Sept. 9, 2022, 1:07 a.m.