synt.data2 {fclust} | R Documentation |
Synthetic data
Description
Synthetic dataset with 2 non-spherical clusters.
Usage
data(synt.data2)
Format
A matrix with 240 rows and 2 columns.
Details
Although three clusters are clearly visible, Gustafson and Kessel - like fuzzy k-means clustering algorithm FKM.gk
fails due to singularity of some covariance matrix.
The Gustafson, Kessel and Babuska - like fuzzy k-means clustering algorithm FKM.gkb
should be used to avoid singularity problem.
Author(s)
Paolo Giordani, Maria Brigida Ferraro, Alessio Serafini
References
Gustafson E.E., Kessel W.C., 1978. Fuzzy clustering with a fuzzy covariance matrix. Proceedings of the IEEE Conference on Decision and Control, pp. 761-766.
See Also
Fclust
, FKM.gk
, FKM.gkb
, plot.fclust
Examples
data(synt.data2)
plot(synt.data2)
## Gustafson and Kessel-like fuzzy k-means
syntFKM.gk=FKM.gk(synt.data2, k = 3, RS = 1, seed = 123)
## Gustafson, Kessel and Babuska-like fuzzy k-means
syntFKM.gkb=FKM.gkb(synt.data2, k = 3, RS = 1, seed = 123)
[Package fclust version 2.1.1.1 Index]