| disc2d {Modalclust} | R Documentation |
Two and three dimensional data representing two half discs
Description
Two and three dimensional data and their hierarchical modal clustering with 400 observations where the first two dimensions represent the shape of two discs.
Usage
data(disc2d)
data(disc2d.hmac)
data(disc3d)
data(disc3d.hmac)
Format
disc2d and disc3d are two and three dimensional
matrices. disc2d.hmac and disc3d.hmac are objects of class hmac
obtained from applying phmac on disc2d and disc3d respectively
Details
Two dimensional data with 400 observations representing the shape of two half discs.
Author(s)
Surajit Ray and Yansong Cheng
References
Li. J, Ray. S, Lindsay. B. G, "A nonparametric statistical approach to clustering via mode identification," Journal of Machine Learning Research , 8(8):1687-1723, 2007.
Lindsay, B.G., Markatou M., Ray, S., Yang, K., Chen, S.C. "Quadratic distances on probabilities: the foundations," The Annals of Statistics Vol. 36, No. 2, page 983–1006, 2008.
Examples
data(disc2d)
plot(disc2d)
data(disc2d.hmac)
summary.hmac(disc2d.hmac)
hard.hmac(disc2d.hmac,n.clust=2)