mikera.matrixx.impl

Class ADiagonalMatrix

java.lang.Object

mikera.transformz.ATransform

mikera.transformz.AAffineTransform

mikera.transformz.ALinearTransform

mikera.matrixx.AMatrix

mikera.matrixx.impl.ADiagonalMatrix

All Implemented Interfaces:

Cloneable, Iterable<AVector>, INDArray, ISparse, IMatrix, ITransform

Direct Known Subclasses:

DiagonalMatrix, IdentityMatrix, ScalarMatrix

public abstract class ADiagonalMatrix
extends AMatrix
implements ISparse

Abstract base class for diagonal matrices

Author:

Mike

Field Summary

Fields

Modifier and Type	Field and Description
protected int	dimensions

Constructor Summary

Constructors

Constructor and Description
ADiagonalMatrix(int dimensions)

Method Summary

Methods

Modifier and Type	Method and Description
double	calculateElement(int i, AVector v) Calculates a single element of the output.
int	columnCount() Returns the number of columns in the matrix
double	density() Computes the density ratio of this sparse array (proportion of non-zero elements)
double	determinant() Calculates the determinant of the matrix.
int	dimensions() Returns the number of dimensions of this diagonal matrix
double	getDiagonalValue(int i)
AMatrix	innerProduct(ADiagonalMatrix a)
AMatrix	innerProduct(AMatrix a)
boolean	isFullyMutable() Returns true if the INDArray is fully mutable in all positions i.e.
boolean	isIdentity() Returns true if this transform is known to be the identity function, i.e.
boolean	isMutable() Returns true if the INDArray is mutable (at least partially)
boolean	isSquare() Returns true if the transform is square (same number of input and output dimensions)
int	rowCount() Returns the number of rows in the matrix
void	set(int row, int column, double value) Sets a specified element in the matrix
void	transformInPlace(AVector v) Transforms a vector destructively.
void	transposeInPlace()

Methods inherited from class mikera.matrixx.AMatrix

add, add, add, add, addAt, addMultiple, addRowMultiple, applyOp, applyOp, asVector, broadcast, clone, cloneRow, compose, compose, composeWith, composeWith, copyOfMatrix, copyOfTranslationVector, dimensionality, elementCount, elementMul, elementSum, epsilonEquals, equals, equals, equals, equals, exactClone, get, get, get, get, getColumn, getLeadingDiagonal, getLongShape, getMatrixComponent, getRow, getShape, getSlices, getTranspose, hashCode, innerProduct, innerProduct, innerProduct, inputDimensions, inverse, isElementConstrained, isInvertible, isView, isZeroMatrix, iterator, mul, multiply, multiplyRow, outerProduct, outputDimensions, reshape, scale, set, set, set, set, set, set, setElements, setElements, slice, sliceCount, sub, sub, sub, sub, swapColumns, swapRows, toAffineTransform, toMutableMatrix, toString, toVector, trace, transform

Methods inherited from class mikera.transformz.ALinearTransform

getTranslationComponent, isLinear

Methods inherited from class mikera.transformz.AAffineTransform

compose, transformNormal

Methods inherited from class mikera.transformz.ATransform

takeComponents, takeComponents, takeComponents, transform

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

dimensions

protected final int dimensions

Constructor Detail

ADiagonalMatrix

public ADiagonalMatrix(int dimensions)

Method Detail

isSquare

public boolean isSquare()

Description copied from class: ATransform

Returns true if the transform is square (same number of input and output dimensions)

Overrides:

isSquare in class AMatrix

Returns:

isFullyMutable

public boolean isFullyMutable()

Description copied from interface: INDArray

Returns true if the INDArray is fully mutable in all positions i.e. every position can store any valid double value

Specified by:

isFullyMutable in interface INDArray

Overrides:

isFullyMutable in class AMatrix

Returns:

isMutable

public boolean isMutable()

Description copied from interface: INDArray

Returns true if the INDArray is mutable (at least partially)

Specified by:

isMutable in interface INDArray

Overrides:

isMutable in class AMatrix

Returns:

determinant

public double determinant()

Description copied from class: AMatrix

Calculates the determinant of the matrix.

Overrides:

determinant in class AMatrix

dimensions

public int dimensions()

Returns the number of dimensions of this diagonal matrix

Returns:

innerProduct

public AMatrix innerProduct(ADiagonalMatrix a)

innerProduct

public AMatrix innerProduct(AMatrix a)

Overrides:

innerProduct in class AMatrix

transformInPlace

public void transformInPlace(AVector v)

Description copied from class: ATransform

Transforms a vector destructively. Intended for fast non-allocating transforms

Overrides:

transformInPlace in class AMatrix

rowCount

public int rowCount()

Description copied from class: AMatrix

Returns the number of rows in the matrix

Specified by:

rowCount in interface IMatrix

Specified by:

rowCount in class AMatrix

columnCount

public int columnCount()

Description copied from class: AMatrix

Returns the number of columns in the matrix

Specified by:

columnCount in interface IMatrix

Specified by:

columnCount in class AMatrix

isIdentity

public boolean isIdentity()

Description copied from class: ATransform

Returns true if this transform is known to be the identity function, i.e. it maps all vectors to themselves

Overrides:

isIdentity in class AMatrix

transposeInPlace

public void transposeInPlace()

Overrides:

transposeInPlace in class AMatrix

calculateElement

public double calculateElement(int i,
                      AVector v)

Description copied from class: ATransform

Calculates a single element of the output. Not necessarily faster than calculating full output, but can be in some circumstances.

Overrides:

calculateElement in class AMatrix

set

public void set(int row,
       int column,
       double value)

Description copied from class: AMatrix

Sets a specified element in the matrix

Specified by:

set in interface INDArray

Specified by:

set in interface IMatrix

Specified by:

set in class AMatrix

getDiagonalValue

public double getDiagonalValue(int i)

density

public double density()

Description copied from interface: ISparse

Computes the density ratio of this sparse array (proportion of non-zero elements)

Specified by:

density in interface ISparse

Returns: