Tetra {FCPS}

Tetra introduced in [Ultsch, 1993]

Description

Almost touching clusters. Detailed description of dataset and its clustering challenge is provided in [Thrun/Ultsch, 2020].

Usage

data("Tetra")

Details

Size 400, Dimensions 3, stored in Tetra$Data

Classes 4, stored in Tetra$Cls

References

[Ultsch, 1993] Ultsch, A.: Self-organizing neural networks for visualisation and classification, Information and classification, (pp. 307-313), Springer, 1993.

[Thrun/Ultsch, 2020] Thrun, M. C., & Ultsch, A.: Clustering Benchmark Datasets Exploiting the Fundamental Clustering Problems, Data in Brief, Vol. 30(C), pp. 105501, doi:10.1016/j.dib.2020.105501, 2020.

Examples

data(Tetra)
str(Tetra)