Class "kernel" "rbfkernel" "polykernel", "tanhkernel", "vanillakernel"

Description

The built-in kernel classes in KERE

Objects from the Class

Objects can be created by calls of the form new("rbfkernel"), new{"polykernel"}, new{"tanhkernel"}, new{"vanillakernel"}, new{"anovakernel"}, new{"besselkernel"}, new{"laplacekernel"}, new{"splinekernel"} or by calling the rbfdot, polydot, tanhdot, vanilladot, anovadot, besseldot, laplacedot, splinedot functions etc..

Slots

.Data:

Object of class "function" containing the kernel function

kpar:

Object of class "list" containing the kernel parameters

Extends

Class "kernel", directly. Class "function", by class "kernel".

Methods

kernelMatrix

signature(kernel = "rbfkernel", x = "matrix"): computes the kernel matrix

kernelMult

signature(kernel = "rbfkernel", x = "matrix"): computes the quadratic kernel expression

kernelPol

signature(kernel = "rbfkernel", x = "matrix"): computes the kernel expansion

kernelFast

signature(kernel = "rbfkernel", x = "matrix"),,a: computes parts or the full kernel matrix, mainly used in kernel algorithms where columns of the kernel matrix are computed per invocation

Author(s)

Alexandros Karatzoglou
alexandros.karatzoglou@ci.tuwien.ac.at

See Also

dots

Examples

rbfkernel <- rbfdot(sigma = 0.1)
rbfkernel
is(rbfkernel)
kpar(rbfkernel)

Results

R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library(KERE)
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/KERE/kernel-class.Rd_%03d_medium.png", width=480, height=480)
> ### Name: kernel-class
> ### Title: Class "kernel" "rbfkernel" "polykernel", "tanhkernel",
> ###   "vanillakernel"
> ### Aliases: rbfkernel-class polykernel-class vanillakernel-class
> ###   tanhkernel-class anovakernel-class besselkernel-class
> ###   laplacekernel-class splinekernel-class fourierkernel-class
> ###   kfunction-class kernel-class kpar,kernel-method
> ### Keywords: classes
> 
> ### ** Examples
> 
> 
> rbfkernel <- rbfdot(sigma = 0.1)
> rbfkernel
Gaussian Radial Basis kernel function. 
 Hyperparameter : sigma =  0.1 
> is(rbfkernel)
[1] "rbfkernel"        "kernel"           "function"         "OptionalFunction"
[5] "PossibleMethod"   "kfunction"       
> kpar(rbfkernel)
$sigma
[1] 0.1

> 
> 
> 
> 
> 
> 
> dev.off()
null device 
          1 
>