org.tribuo.common.libsvm

Enum KernelType

java.lang.Object

java.lang.Enum<KernelType>

org.tribuo.common.libsvm.KernelType

All Implemented Interfaces:

Serializable, Comparable<KernelType>

public enum KernelType
extends Enum<KernelType>
implements Serializable

Kernel types from libsvm.

Enum Constant Summary

Enum Constants

Enum Constant and 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 and 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 type with the specified name.
static KernelType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

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 Detail

values

public static KernelType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (KernelType c : KernelType.values())
    System.out.println(c);

Returns:

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

valueOf

public static KernelType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type 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.