mikera.vectorz.impl

Class BaseStridedVector

java.lang.Object

mikera.arrayz.impl.AbstractArray<Double>

mikera.vectorz.AVector

mikera.vectorz.impl.ASizedVector

mikera.vectorz.impl.AArrayVector

mikera.vectorz.impl.AStridedVector

mikera.vectorz.impl.BaseStridedVector

All Implemented Interfaces:

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

Direct Known Subclasses:

StridedVector

public abstract class BaseStridedVector
extends AStridedVector

Base class for strided vectors backed with a double array and fixed offset / stride Supports both mutable an immutable subclasses

Author:

Mike

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	offset
protected int	stride

Fields inherited from class mikera.vectorz.impl.AArrayVector

data

Fields inherited from class mikera.vectorz.impl.ASizedVector

length

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BaseStridedVector(int length, double[] data, int offset, int stride)

Method Summary

Modifier and Type	Method and Description
double	dotProduct(AVector v) Returns the dot product of this vector with another vector The vectors must have the same length: if not the result is undefined
double	dotProduct(double[] ds, int off) Fast dot product with a double[] array.
double	dotProduct(double[] ds, int doffset, int dstride) Fast dot product with a double[] array and a stride.
double	get(int i) Returns the double value at the specified position in a 1D vector
int	getArrayOffset() Gets the offset into the underlying double[] data array for the first element of this vector
int	getStride() Gets the stride of this strided vector.
protected int	index(int i) Computes an index into the underlying array for a given vector index
double	unsafeGet(int i)

Methods inherited from class mikera.vectorz.impl.AStridedVector

add, addAt, addMultipleToArray, addToArray, addToArray, applyOp, applyOpCopy, asDoubleArray, broadcast, broadcastLike, clone, copyTo, elementMax, elementMin, elementProduct, elementSquaredSum, elementSum, ensureMutable, equalsArray, getArray, getElements, getElements, getStride, getStrides, hasUncountable, isPackedArray, isRangeZero, iterator, reduce, reduce, selectView, set, setElements, setElements, validate

Methods inherited from class mikera.vectorz.impl.AArrayVector

slice

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, 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, addWeighted, angle, applyOp, applyOp, applyOp, applyOp, asElementList, asVector, broadcastLike, broadcastLike, checkDimension, checkSameLength, clamp, clampMax, clampMin, compareTo, copy, copyTo, copyTo, copyTo, copyTo, crossProduct, crossProduct, dense, denseClone, dimensionality, distance, distanceL1, distanceLinf, distanceSquared, divide, divide, divide, divide, divideCopy, divideCopy, divideTo, dotProduct, dotProduct, elementAbsPowSum, elementIterator, elementPowSum, elementsEqual, epsilonEquals, epsilonEquals, epsilonEquals, epsilonEquals, equals, equals, equals, exactClone, fill, fillRange, get, get, get, get, getElements, getLongShape, getShape, getSlices, getTranspose, getTransposeCopy, getTransposeView, hashCode, immutable, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, innerProduct, interpolate, isElementConstrained, isFullyMutable, isMutable, isSameShape, isUnitLengthVector, isUnitLengthVector, isView, isZero, join, 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, 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, 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, subVector, tanh, toDoubleArray, toDoubleBuffer, toList, toNormal, toSliceArray, toString, toStringFull, toVector, tryEfficientJoin, unsafeSet

Methods inherited from class mikera.arrayz.impl.AbstractArray

add, addInnerProduct, addInnerProduct, addOuterProduct, broadcastCloneLike, broadcastCopyLike, checkMutable, componentCount, density, 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

abs, absCopy, add, add, addAt, addCopy, addCopy, addInnerProduct, addMultiple, addOuterProduct, addPower, addPower, addToArray, applyOp, applyOp, applyOp, asElementList, asVector, broadcastCloneLike, broadcastCopyLike, broadcastLike, broadcastLike, checkMutable, clamp, componentCount, copy, dense, denseClone, dimensionality, divide, divide, divideCopy, elementAbsPowSum, elementCount, elementIterator, elementPowSum, elementsEqual, epsilonEquals, epsilonEquals, equals, equalsArray, exactClone, exp, fill, get, get, get, get, get, get, get, get, getComponent, getComponents, getElements, getElements, getElements, getLongShape, getShape, getShape, getShapeClone, getSlices, getSlices, getSliceViews, getTranspose, getTransposeCopy, getTransposeView, immutable, innerProduct, innerProduct, innerProduct, innerProduct, isBoolean, isDense, isElementConstrained, isFullyMutable, isMutable, isSameShape, isSparse, isView, isZero, join, join, log, multiply, multiply, multiplyCopy, multiplyCopy, mutable, negate, negateCopy, nonZeroCount, outerProduct, pow, reciprocal, reciprocalCopy, reduceSlices, reduceSlices, reorder, reorder, reshape, rotateView, scale, scaleAdd, scaleAdd, scaleCopy, set, set, set, set, set, set, set, setElements, setInnerProduct, setMultiple, setMultiple, signum, signumCopy, slice, slice, sliceCount, sliceValue, sparse, sparseClone, sqrt, square, squareCopy, sub, sub, subArray, subCopy, toArray, toDoubleArray, toDoubleBuffer, toSliceArray, toVector, withComponents

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

stride

protected final int stride

offset

protected final int offset

Constructor Detail

BaseStridedVector

protected BaseStridedVector(int length,
                            double[] data,
                            int offset,
                            int stride)

Method Detail

getArrayOffset

public final int getArrayOffset()

Description copied from class: AStridedVector

Gets the offset into the underlying double[] data array for the first element of this vector

Specified by:

getArrayOffset in interface IStridedArray

Specified by:

getArrayOffset in class AStridedVector

Returns:

getStride

public final int getStride()

Description copied from class: AStridedVector

Gets the stride of this strided vector.

Specified by:

getStride in class AStridedVector

Returns:

index

protected final int index(int i)

Description copied from class: AArrayVector

Computes an index into the underlying array for a given vector index

Specified by:

index in class AArrayVector

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

dotProduct

public double dotProduct(double[] ds,
                         int off)

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

Overrides:

dotProduct in class AStridedVector

dotProduct

public double dotProduct(double[] ds,
                         int doffset,
                         int dstride)

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

dotProduct

public double dotProduct(AVector v)

Description copied from class: AVector

Returns the dot product of this vector with another vector The vectors must have the same length: if not the result is undefined

Overrides:

dotProduct in class AStridedVector

Returns: