transformKernel: Transforms a Kernel matrix as specified by a linkinfo object

In semisupKernelPCA: Kernel PCA projection, and semi-supervised variant.

Description

Transforms a Kernel matrix as specified by a linkinfo object

Usage

## S4 method for signature 'matrix'
transformKernel(kern, linkinfo, type=c("none", "simple", "extended"), 
		linkfun=function(x) x^(1/6), notlinkfun=function(x) {1 - (1-x)^(1/6)})

Arguments

kern	the kernel matrix to transform
linkinfo	linkinfo object that specifies the similarities to transform
type	among c("none", "simple", "extended"), see reference for explanation
linkfun	function applied to similarities that match the linkinfo$link relation
notlinkfun	function applied to similarities that match the linkinfo$notlink relation

Author(s)

Pierrick Bruneau
[e-mail]

References

Pierrick Bruneau and Benoit Otjacques
An Interactive, Example-Based, Visual Clustering System
Tech Report, CRP Gabriel Lippmann, 2013
http://hal.archives-ouvertes.fr/hal-00797367

See Also

linkinfo

Examples

data(iris)

krn <- computeKernel(iris[,1:4])
lk <- linkinfo(krn)
lk <- add(lk, 1, 5, "link")
lk <- add(lk, 3, 55, "notlink")
krn <- transformKernel(krn, lk, "extended")

semisupKernelPCA documentation built on May 29, 2017, 8:59 p.m.