mikera.vectorz.impl

Class IndexedArrayVector

java.lang.Object

mikera.arrayz.impl.AbstractArray<Double>

mikera.vectorz.AVector

mikera.vectorz.impl.ASizedVector

mikera.vectorz.impl.IndexedArrayVector

All Implemented Interfaces:

Serializable, Cloneable, Comparable<AVector>, Iterable<Double>, INDArray, IVector

public final class IndexedArrayVector
extends ASizedVector

Vector that addresses elements indexed into double[] array. Useful for sub-selections views of array data

Author:

Mike

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	indexes

Fields inherited from class mikera.vectorz.impl.ASizedVector

length

Method Summary

Modifier and Type	Method and Description
void	addAt(int i, double value) Adds a value to a specific element of the vector This function does not perform bounds checking, i.e.
void	addMultipleToArray(double factor, int offset, double[] dest, int destOffset, int length) Adds a multiple of a subvector of this vector into a double array at the specified offset
void	addToArray(double[] dest, int offset) Adds this vector to a double[] array, starting at the specified offset.
void	applyOp(Op op) Applies a unary operator to all elements of the array (in-place)
void	copyTo(int offset, double[] dest, int destOffset, int length) Copies a subset of this vector to a specified destination array offset
void	copyTo(int offset, double[] dest, int destOffset, int length, int stride) Copies a subset of this vector to a specified destination array offset using the given stride.
double	dotProduct(double[] data, int offset) Fast dot product with a double[] array.
double	dotProduct(double[] data, int offset, int stride) Fast dot product with a double[] array and a stride.
boolean	equalsArray(double[] data, int offset) Returns true if this vector exactly matches the elements in double[] array, starting from the specified offset
IndexedArrayVector	exactClone() Returns an exact clone of this vector, i.e.
double	get(int i) Returns the double value at the specified position in a 1D vector
void	getElements(double[] dest, int offset) Gets all elements of the array, copying them into a double array at the specified offset
boolean	isView() Returns true if this vector is of a view type that references other vectors / data.
AVector	join(AVector v)
protected IndexedArrayVector	replaceIndex(int[] newIndices)
IndexedArrayVector	selectView(int... inds) Selects a subset of indices from a vector, returning a view
void	set(int i, double value) Sets a value at a given position in a mutable 1D array
ArrayIndexScalar	slice(int i) Returns the specified major slice of this array as a view (slice along dimension 0) 0 dimensional slice results are permitted, but attempting to slice a 0 dimensional array will result in an error.
AVector	subVector(int offset, int length) Obtains a sub-vector view that refers to this vector.
double	unsafeGet(int i)
void	unsafeSet(int i, double value)
void	validate() Validates the internal data structure of the INDArray.
static IndexedArrayVector	wrap(double[] data, int[] indexes) Wraps the specified indexes into a double[] array as an IndexedArrayVector The length of the vector will equal the number of indices provided.

Methods inherited from class mikera.vectorz.impl.ASizedVector

checkIndex, checkLength, checkRange, checkSameLength, checkSameLength, elementCount, equalsArray, get, getShape, getShapeClone, isSameShape, length, sliceCount

Methods inherited from class mikera.vectorz.AVector

abs, absCopy, add, add, add, add, add, add, add, add, add, addAt, addCopy, addCopy, addCopy, addInnerProduct, addInnerProduct, addInnerProduct, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultiple, addMultipleCopy, addMultipleToArray, addPower, addPower, addPower, addProduct, addProduct, addProduct, addProductCopy, addProductCopy, addProductToArray, addProductToArray, addToArray, addToArray, addWeighted, angle, applyOp, applyOp, applyOp, applyOp, applyOpCopy, asDoubleArray, asElementList, asVector, broadcast, broadcastLike, broadcastLike, broadcastLike, checkDimension, checkSameLength, clamp, clampMax, clampMin, clone, compareTo, copy, copyTo, copyTo, copyTo, crossProduct, crossProduct, dense, denseClone, dimensionality, distance, distanceL1, distanceLinf, distanceSquared, divide, divide, divide, divide, divideCopy, divideCopy, divideTo, dotProduct, dotProduct, dotProduct, elementAbsPowSum, elementIterator, elementMax, elementMin, elementPowSum, elementProduct, elementsEqual, elementSquaredSum, elementSum, epsilonEquals, epsilonEquals, epsilonEquals, epsilonEquals, equals, equals, equals, fill, fillRange, get, get, get, get, getElements, getElements, getLongShape, getShape, getSlices, getTranspose, getTransposeCopy, getTransposeView, hashCode, hasUncountable, immutable, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, interpolate, isElementConstrained, isFullyMutable, isMutable, isRangeZero, isSameShape, isUnitLengthVector, isUnitLengthVector, isZero, iterator, join, join, log, logistic, magnitude, magnitudeSquared, maxAbsElement, maxAbsElementIndex, maxElement, maxElementIndex, minElement, minElementIndex, multiply, multiply, multiply, multiply, multiply, multiplyCopy, multiplyCopy, multiplyCopy, multiplyTo, mutable, negate, negateCopy, nonSparseIndex, nonZeroCount, nonZeroIndices, nonZeroValues, normalise, normaliseCopy, normaliseMaxAbsElement, outerProduct, outerProduct, pow, projectToPlane, reduce, reduce, reduceSlices, reduceSlices, reorder, reorder, reshape, rotateCopy, rotateView, rotateView, scale, scaleAdd, scaleAdd, scaleAdd, scaleAdd, scaleCopy, scaleToMagnitude, select, selectClone, set, set, set, set, set, set, set, set, set, set, setElements, setElements, setElements, setInnerProduct, setInnerProduct, setInnerProduct, setMultiple, setMultiple, setMultiple, setMultiple, shiftCopy, signum, slice, sliceValue, softmax, softmaxCopy, sparse, sparseClone, sqrtCopy, square, squareCopy, sub, sub, subArray, subAt, subCopy, subCopy, subMultiple, tanh, toDoubleArray, toDoubleBuffer, toList, toNormal, toSliceArray, toString, toStringFull, toVector, tryEfficientJoin

Methods inherited from class mikera.arrayz.impl.AbstractArray

add, addInnerProduct, addInnerProduct, addOuterProduct, broadcastCloneLike, broadcastCopyLike, checkMutable, componentCount, density, ensureMutable, exp, get, get, get, getComponent, getComponents, getElements, getElements, getSlices, getSliceViews, isBoolean, isDense, isSparse, reciprocal, reciprocalCopy, scale, set, set, signumCopy, sqrt, sub, sub, toArray, withComponents

Methods inherited from class java.lang.Object

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

Methods inherited from interface mikera.arrayz.INDArray

addOuterProduct, broadcastCloneLike, broadcastCopyLike, checkMutable, componentCount, ensureMutable, exp, get, get, get, getComponent, getComponents, getElements, getElements, getSlices, getSliceViews, isBoolean, isDense, isSparse, reciprocal, reciprocalCopy, scale, set, set, signumCopy, sqrt, sub, toArray, withComponents

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

indexes

protected final int[] indexes

Method Detail

wrap

public static IndexedArrayVector wrap(double[] data,
                                      int[] indexes)

Wraps the specified indexes into a double[] array as an IndexedArrayVector The length of the vector will equal the number of indices provided.

Parameters:

data -

indexes -

Returns:

get

public final double get(int i)

Description copied from interface: INDArray

Returns the double value at the specified position in a 1D vector

Specified by:

get in interface INDArray

Specified by:

get in interface IVector

Specified by:

get in class AVector

unsafeGet

public final double unsafeGet(int i)

Overrides:

unsafeGet in class AVector

selectView

public IndexedArrayVector selectView(int... inds)

Description copied from class: AVector

Selects a subset of indices from a vector, returning a view

Overrides:

selectView in class AVector

Returns:

a view of the selected indices

set

public final void set(int i,
                      double value)

Description copied from interface: INDArray

Sets a value at a given position in a mutable 1D array

Specified by:

set in interface INDArray

Specified by:

set in interface IVector

Specified by:

set in class AVector

unsafeSet

public final void unsafeSet(int i,
                            double value)

Overrides:

unsafeSet in class AVector

addAt

public void addAt(int i,
                  double value)

Description copied from class: AVector

Adds a value to a specific element of the vector This function does not perform bounds checking, i.e. is an unsafe operation

Overrides:

addAt in class AVector

applyOp

public void applyOp(Op op)

Description copied from interface: INDArray

Applies a unary operator to all elements of the array (in-place)

Specified by:

applyOp in interface INDArray

Overrides:

applyOp in class AVector

subVector

public AVector subVector(int offset,
                         int length)

Description copied from class: AVector

Obtains a sub-vector view that refers to this vector. Changes to the sub-vector will be reflected in this vector

Overrides:

subVector in class AVector

slice

public ArrayIndexScalar slice(int i)

Description copied from interface: INDArray

Returns the specified major slice of this array as a view (slice along dimension 0) 0 dimensional slice results are permitted, but attempting to slice a 0 dimensional array will result in an error.

Specified by:

slice in interface INDArray

Overrides:

slice in class AVector

getElements

public void getElements(double[] dest,
                        int offset)

Description copied from interface: INDArray

Gets all elements of the array, copying them into a double array at the specified offset

Specified by:

getElements in interface INDArray

Overrides:

getElements in class AVector

copyTo

public void copyTo(int offset,
                   double[] dest,
                   int destOffset,
                   int length)

Description copied from class: AVector

Copies a subset of this vector to a specified destination array offset

Overrides:

copyTo in class AVector

copyTo

public void copyTo(int offset,
                   double[] dest,
                   int destOffset,
                   int length,
                   int stride)

Description copied from class: AVector

Copies a subset of this vector to a specified destination array offset using the given stride. Unsafe operation: performs no bounds checking

Overrides:

copyTo in class AVector

addToArray

public void addToArray(double[] dest,
                       int offset)

Description copied from class: AVector

Adds this vector to a double[] array, starting at the specified offset.

Specified by:

addToArray in interface INDArray

Overrides:

addToArray in class AVector

addMultipleToArray

public void addMultipleToArray(double factor,
                               int offset,
                               double[] dest,
                               int destOffset,
                               int length)

Description copied from class: AVector

Adds a multiple of a subvector of this vector into a double array at the specified offset

Overrides:

addMultipleToArray in class AVector

dotProduct

public double dotProduct(double[] data,
                         int offset)

Description copied from class: AVector

Fast dot product with a double[] array. Performs no bounds checking. Likely to be faster than most other dot product operations

Specified by:

dotProduct in class AVector

dotProduct

public double dotProduct(double[] data,
                         int offset,
                         int stride)

Description copied from class: AVector

Fast dot product with a double[] array and a stride. Performs no bounds checking. Likely to be faster than other dot product operations

Overrides:

dotProduct in class AVector

exactClone

public IndexedArrayVector exactClone()

Description copied from class: AVector

Returns an exact clone of this vector, i.e. of the same type

Specified by:

exactClone in interface INDArray

Specified by:

exactClone in class AVector

Returns:

A clone of the original array

join

public AVector join(AVector v)

Overrides:

join in class AVector

replaceIndex

protected IndexedArrayVector replaceIndex(int[] newIndices)

equalsArray

public boolean equalsArray(double[] data,
                           int offset)

Description copied from class: AVector

Returns true if this vector exactly matches the elements in double[] array, starting from the specified offset

Specified by:

equalsArray in interface INDArray

Overrides:

equalsArray in class ASizedVector

Parameters:

data - Array of double element values to check for equality

offset - Offset into the data array

Returns:

validate

public void validate()

Description copied from interface: INDArray

Validates the internal data structure of the INDArray. Throws an exception on failure. Failure indicates a serious bug and/or data corruption.

Specified by:

validate in interface INDArray

isView

public boolean isView()

Description copied from class: AVector

Returns true if this vector is of a view type that references other vectors / data.

Specified by:

isView in interface INDArray

Overrides:

isView in class AVector