inchol-class function

Class "inchol"

The reduced Cholesky decomposition object class

Objects from the Class

Objects can be created by calls of the form new("inchol", ...). or by calling the inchol function.

Slots

• .Data:: Object of class "matrix" contains the decomposed matrix
• pivots:: Object of class "vector" contains the pivots performed
• diagresidues:: Object of class "vector" contains the diagonial residues
• maxresiduals:: Object of class "vector" contains the maximum residues

Extends

Class "matrix", directly.

Methods

• diagresidues: signature(object = "inchol"): returns the diagonial residues
• maxresiduals: signature(object = "inchol"): returns the maximum residues
• pivots: signature(object = "inchol"): returns the pivots performed

Author(s)

Alexandros Karatzoglou

alexandros.karatzoglou@ci.tuwien.ac.at

See Also

inchol, csi-class, csi

Examples

data(iris)
datamatrix <- as.matrix(iris[,-5])
# initialize kernel function
rbf <- rbfdot(sigma=0.1)
rbf
Z <- inchol(datamatrix,kernel=rbf)
dim(Z)
pivots(Z)
diagresidues(Z)
maxresiduals(Z)