semisupKernelPCA (version 0.1.5)

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

Description

Transforms a Kernel matrix as specified by a linkinfo object

Usage

## S3 method for class '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

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")