Package com.irurueta.algebra

Enum Class DecomposerType

java.lang.Object

java.lang.Enum<DecomposerType>

com.irurueta.algebra.DecomposerType

All Implemented Interfaces:

Serializable, Comparable<DecomposerType>, Constable

public enum DecomposerType
extends Enum<DecomposerType>

Enumerator indicating the possible methods available for matrix decomposition.

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
CHOLESKY_DECOMPOSITION	Defines Cholesky decomposition, which decomposes a square symmetric and positive definite matrix into a triangular factor (L) and its transposed (L').
LU_DECOMPOSITION	Defines LU decomposition, which decomposes a matrix into upper (U) and lower (L) triangular matrices.
QR_DECOMPOSITION	Defines QR decomposition, which decomposes a matrix into an orthogonal matrix (Q) and an upper triangular matrix (R).
QR_ECONOMY_DECOMPOSITION	Defines Economy QR decomposition, which is a faster version of QR decomposition.
RQ_DECOMPOSITION	Defines RQ decomposition, which decomposes a matrix into an upper diagonal matrix (R) and an orthogonal matrix (Q).
SINGULAR_VALUE_DECOMPOSITION	Defines Singular Value Decomposition, which decomposes any rectangular matrix into 2 unary matrices (U, V) and 1 diagonal matrix containing singular values (D).

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DecomposerType()

Method Summary

Modifier and Type	Method	Description
static DecomposerType	valueOf(String name)	Returns the enum constant of this class with the specified name.
static DecomposerType[]	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

LU_DECOMPOSITION

public static final DecomposerType LU_DECOMPOSITION

Defines LU decomposition, which decomposes a matrix into upper (U) and lower (L) triangular matrices.

QR_DECOMPOSITION

public static final DecomposerType QR_DECOMPOSITION

Defines QR decomposition, which decomposes a matrix into an orthogonal matrix (Q) and an upper triangular matrix (R).

QR_ECONOMY_DECOMPOSITION

public static final DecomposerType QR_ECONOMY_DECOMPOSITION

Defines Economy QR decomposition, which is a faster version of QR decomposition. Notice that economy sized version only works for matrices having rows < columns, while Q is a rows-by-columns and R is columns-by-columns in size.

RQ_DECOMPOSITION

public static final DecomposerType RQ_DECOMPOSITION

Defines RQ decomposition, which decomposes a matrix into an upper diagonal matrix (R) and an orthogonal matrix (Q). RQ decomposition is very similar to QR, and it is related to it through transposition by reversing order of factors R and Q respect to QR decomposition.

CHOLESKY_DECOMPOSITION

public static final DecomposerType CHOLESKY_DECOMPOSITION

Defines Cholesky decomposition, which decomposes a square symmetric and positive definite matrix into a triangular factor (L) and its transposed (L').

SINGULAR_VALUE_DECOMPOSITION

public static final DecomposerType SINGULAR_VALUE_DECOMPOSITION

Defines Singular Value Decomposition, which decomposes any rectangular matrix into 2 unary matrices (U, V) and 1 diagonal matrix containing singular values (D).

Constructor Details

DecomposerType

private DecomposerType()

Method Details

values

public static DecomposerType[] 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 DecomposerType 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