Package org.tribuo.common.libsvm

Enum Class KernelType

java.lang.Object

java.lang.Enum<KernelType>

org.tribuo.common.libsvm.KernelType

All Implemented Interfaces:

Serializable, Comparable<KernelType>, Constable

public enum KernelType
extends Enum<KernelType>
implements Serializable

Kernel types from libsvm.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
LINEAR	A linear kernel function (i.e., a dot product).
POLY	A polynomial kernel of the form (gamma*u'*v + coef0)^degree
RBF	An RBF kernel of the form exp(-gamma*|u-v|^2)
SIGMOID	A sigmoid kernel of the form tanh(gamma*u'*v + coef0)

Method Summary

Modifier and Type	Method	Description
static KernelType	getKernelType(int nativeType)	Converts the LibSVM int id into the enum value.
int	getNativeType()	Gets LibSVM's int id.
static KernelType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static KernelType[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

LINEAR

public static final KernelType LINEAR

A linear kernel function (i.e., a dot product).

POLY

public static final KernelType POLY

A polynomial kernel of the form (gamma*u'*v + coef0)^degree

RBF

public static final KernelType RBF

An RBF kernel of the form exp(-gamma*|u-v|^2)

SIGMOID

public static final KernelType SIGMOID

A sigmoid kernel of the form tanh(gamma*u'*v + coef0)

Method Details

values

public static KernelType[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static KernelType valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

getNativeType

public int getNativeType()

Gets LibSVM's int id.

Returns:

The int id.

getKernelType

public static KernelType getKernelType(int nativeType)

Converts the LibSVM int id into the enum value.

Parameters:

nativeType - The LibSVM id.

Returns:

The corresponding enum.