org.knime.base.node.mine.svm.kernel
Class HyperTangentKernel

java.lang.Object
  org.knime.base.node.mine.svm.kernel.HyperTangentKernel

All Implemented Interfaces:

Kernel

public class HyperTangentKernel
extends Object
implements Kernel

Hypertangent kernel.

Author:

Stefan Ciobaca, University of Konstanz, Nicolas Cebron, University of Konstanz

Constructor Summary

HyperTangentKernel()

Method Summary

boolean	areValid(double[] params) check if the parameters are valid.
double	evaluate(double[] a, double[] b) returns the value of the kernel given vectors a and b.
double	evaluate(DoubleVector a, DoubleVector b) evaluate the kernel.
double	getDefaultParameter(int index) return the default parameter at the given index.
int	getNumberParameters() 2 parameters (kappa and delta).
double	getParameter(int index) returns the parameter at given index.
String	getParameterName(int index) parameters are "kappa" and "delta".
KernelFactory.KernelType	getType()
void	setParameter(int index, double value) sets the given parameter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HyperTangentKernel

public HyperTangentKernel()

Method Detail

evaluate

public double evaluate(DoubleVector a,
                       DoubleVector b)

evaluate the kernel.

Specified by:

evaluate in interface Kernel

Parameters:

a - first vector

b - second vector

Returns:

the result

See Also:

DoubleVector

evaluate

public double evaluate(double[] a,
                       double[] b)

returns the value of the kernel given vectors a and b.

Specified by:

evaluate in interface Kernel

Parameters:

a - the first vector

b - the second vector

Returns:

the result of the kernel in a and b

getNumberParameters

public int getNumberParameters()

2 parameters (kappa and delta).

Specified by:

getNumberParameters in interface Kernel

Returns:

2

See Also:

Kernel.getNumberParameters()

getParameterName

public String getParameterName(int index)

parameters are "kappa" and "delta".

Specified by:

getParameterName in interface Kernel

Parameters:

index - the parameter index.

Returns:

parameter name

See Also:

Kernel.getParameterName(int)

areValid

public boolean areValid(double[] params)

check if the parameters are valid.

Specified by:

areValid in interface Kernel

Parameters:

params - which parameters

Returns:

validity

See Also:

Kernel.areValid(double[])

setParameter

public void setParameter(int index,
                         double value)

sets the given parameter.

Specified by:

setParameter in interface Kernel

Parameters:

index - the index of the parameter to set

value - the value to put into the parameter

getDefaultParameter

public double getDefaultParameter(int index)

return the default parameter at the given index. index must be between 0 and getNumberParameters() - 1.

Specified by:

getDefaultParameter in interface Kernel

Parameters:

index - the parameter index.

Returns:

the parameter's default value

getParameter

public double getParameter(int index)

returns the parameter at given index.

Specified by:

getParameter in interface Kernel

Parameters:

index - the index of the parameter to get

Returns:

the value of the parameter

getType

public KernelFactory.KernelType getType()

Specified by:

getType in interface Kernel

Returns:

the KernelFactory.KernelType of the Kernel