Module net.finmath.lib

Package net.finmath.optimizer

Enum StochasticLevenbergMarquardt.RegularizationMethod

java.lang.Object

java.lang.Enum<StochasticLevenbergMarquardt.RegularizationMethod>

net.finmath.optimizer.StochasticLevenbergMarquardt.RegularizationMethod

All Implemented Interfaces:

Serializable, Comparable<StochasticLevenbergMarquardt.RegularizationMethod>, java.lang.constant.Constable

Enclosing class:

StochasticLevenbergMarquardt

public static enum StochasticLevenbergMarquardt.RegularizationMethod
extends Enum<StochasticLevenbergMarquardt.RegularizationMethod>

The regularization method used to invert the approximation of the Hessian matrix.

Author:

Christian Fries

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
LEVENBERG	The Hessian approximated and regularized as \( H_{\lambda} = J^T J + \lambda I \).
LEVENBERG_MARQUARDT	The Hessian approximated and regularized as \( H_{\lambda} = J^T J + \lambda \text{diag}(J^T J) \).

Method Summary

Modifier and Type	Method	Description
static StochasticLevenbergMarquardt.RegularizationMethod	valueOf(String name)	Returns the enum constant of this type with the specified name.
static StochasticLevenbergMarquardt.RegularizationMethod[]	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, 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

LEVENBERG

public static final StochasticLevenbergMarquardt.RegularizationMethod LEVENBERG

The Hessian approximated and regularized as \( H_{\lambda} = J^T J + \lambda I \).

LEVENBERG_MARQUARDT

public static final StochasticLevenbergMarquardt.RegularizationMethod LEVENBERG_MARQUARDT

The Hessian approximated and regularized as \( H_{\lambda} = J^T J + \lambda \text{diag}(J^T J) \).

Method Details

values

public static StochasticLevenbergMarquardt.RegularizationMethod[] values()

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

Returns:

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

valueOf

public static StochasticLevenbergMarquardt.RegularizationMethod 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